Linear Technology DC2024A Quick setup guide

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DEMO MANUAL DC2024A
Description
LTC4282
High Current Hot Swap Controller
with I2C Compatible Monitoring
Demonstration circuit 2024A features the LT C
®
4282 high
current Hot Swap controller.The LTC4282 is well suited
to high power applications because the precise monitor-
ing capability and accurate current limiting reduces the
extremes in which both loads and power supplies must
safely operate.Non-volatile configuration allows for flex-
ibility in the autonomous generation of alerts and response
to faults.The LTC4282 provides a rich set of features to
support Hot Swap applications including:
n 12-/16-Bit ADC Monitors Current,Voltage,Power and
Energy
n Controls Two Sets of Parallel MOSFETs for High Current
Applications
n I2C/SMBus Interface
L,LT ,LT C ,LT M , Linear Technology and the Linear logo are registered trademarks and
LTpowerPlay is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
n Non-Volatile Configuration and Logging Functions
n Generates Alerts on ADC Measurements Outside Limits
n Software Adjustable Current Limit with Foldback
n Three General Purpose Input/Outputs
Available in a 32-pin 5mm × 5mm QFN package,the
LTC4282 is showcased on DC2024A configured for a
12V/100A application.The DC2024A-B has an included
programming socket to allow programming an LTC4282
for prototypingpurposes priorto its permanent installation
on a PCB.The DC2024A-A does not have this socket.By
changing a few passive components, 2.9V to 30V applica-
tions can easily be evaluated.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2024A
Figure 1. Proper Measurement Equipment Setup
Test
Loads
Variable
Power
Supply
A
V V
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DEMO MANUAL DC2024A
Quick start proceDure
performance summary
Specifications are at TA= 25°C
PARAMETER CONDITIONS VALUE
Input Supply Voltage Range 2.9V to 30V
Nominal Operating Voltage 12.0V
Overvoltage Lockout Nominal 15.0V
Undervoltage Lockout Nominal 11.1V
Output Current Limit Nominal 100A
Maximum Load Capacitance Nominal 10,000µF
Timer Expiration Period Nominal 4ms
Table. Power Input and Output Connections
NOMENCLATURE CONNECTOR DESCRIPTION
12VIN E1 12V Power In
12VOUT 100A E2 12V Power Out
GND E21 (Banana) Power Supply Common
Table 2. Test Points, Turrets
NOMENCLATURE TURRET DESCRIPTION
GPIO1 E3 GPIO1 Pin I/O
VCC E4 Internal VCC
12VOUT E5 12VOUT Monitor
12VIN E6 12VIN Monitor
ON (SHORT PIN) E7 ON Pin Monitor/Input
SCL E8 I2C Serial Clock Input
GND E9, E10, E15, E17 Ground
SDA E11 I2C Serial Data Input/Output
ALERT E12 ALERT Pin
GPIO2 E13 GPIO2 Pin I/O
GPIO3 E14 GPIO3 Pin I/O
EXT 5V E16
TIMER E18 TIMER Pin
UV E19 UV Pin
OV E20 OV Pin
GATE2 E22 GATE 2 Pin
GATE1 E23 GATE 1 Pin
Table 3. LED Indicators
NOMENCLATURE LED DESCRIPTION
IN D1 (Green) Input Power Indicator
OUT D2 (Green) Output Power Indicator
GPIO1 D3 (Green) GPIO1 Logic Low Indicator
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DEMO MANUAL DC2024A
Quick start proceDure
Table 4. Jumpers
NOMENCLATURE JUMPER DESCRIPTION
CLK: INT, EXT JP1 Internal/External Clock Select
ON: INTVCC, FLOAT, GND JP2 ON Input Select, VCC, Float (External), GND
ADR0: H, NC, L JP3 Address Pin ADRO Select
ADR1: H, NC, L JP4 Address Pin ADR1 Select
ADR2: H, NC, L JP5 Address Pin ADR2 Select
WRITE PROTECT: LOCK, WRITE JP6 Write Protect for EEPROM
Operating Principles
The LTC4282 is a low voltage,high current Hot Swap
controller that has a 2.9V to 33V operating range and
a 45V absolute maximum voltage for the VDD pin.This
demo circuit is populated for 12V operation,but it can
easily be readjusted for any voltage between 2.9V and 30V
by replacing R1, R2, and R7 (top resistors in the UV/OV
divider and the FB divider). The DC2024A as supplied by
the factory is populated with a pair of PSMN1R5-30BLE
MOSFETs in D2PAK packages.A total of ten 3mΩ sense
resistors are used providing typically 100A of load cur-
rent. The current limit and circuit breaker thresholds can
be adjusted by changing the sense resistors R25, R30,
R35, R41, R47, R52, R57, R62, R67, and R72 and/or the
value of ∆VSENSE via addressable registers in the LTC4282.
Several locationsfor MOSFETpackagesas wellas additional
sense resistors are available on the front and rear of the
PCB for higher current configurations.
Quick Start Procedure (Without Software)
DC2024A is easy to set up to evaluate the performance of
the LTC4282. Refer to Figure 1for proper measurement
equipment setup and follow the procedure below.
WARNING
The DC2024A is capable of operation in excess of 100A.
At this current and power level,there is a danger of seri-
ous personal injury and equipment damage if proper
techniques are not used.All cabling between the power
supply and the load should be capable of handling the
current levels used.
Additionally, the high currents and fast transients can
cause unexpected voltage drops in cables connecting the
test equipment to the DC2024A due to parasitic resistance
and inductance.The cable drops may cause ground loops
for the current via various cables and scope probes.This
will cause unexplained ringing,distorted oscilloscope
waveforms, voltage and current spikes,and signals ap-
pearing to be below ground.
Table 5. Conectors
NOMENCLATURE CONNECTOR DESCRIPTION
DC590 J1 Connection for DC590 Aux Demo Board
DC1613 J2 Connection for DC1613 Aux Demo Board
Table 3. LED Indicators
SOCKET POWER ON D4 (Red) Programming Socket SKT1 Powered
ALERT D5 (Red) ALERT Pin Logic Low
SCL D6 (Green) Serial Clock Active
SDA D7 (Green) Serial Data Active
GPIO3 D8 (Green) GPIO3 Logic Low
GPIO2 D9 (Green) GPIO2 Logic Low
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DEMO MANUAL DC2024A
Quick start proceDure
A common sneak path for current is the third wire
grounds used on power cords of test equipment in use.
Using ground lifting connectors at the wall outlet won’t
necessarily alleviate these effects since most equipment
has line bypassing capacitors between the mains voltage
and local chassis ground.Isolating test equipment using
line isolation transformers with low primary to secondary
capacitance is recommended.Probe ground leads may
intercept induced fields from the high current paths and
should be minimized or avoided
Another method to remove these artifacts is the use of
a differential scope probe connected between the signal
to be observed and a ground connection located close to
the point of measurement.
Also be careful to not allow an open ground from the
power supply or load to cause return current through the
grounds of the various devices connected to the demo
board. This may present a fire hazard or cause damage
to the test equipment.
The DC2024A is set up to operate in a 12V system at
current levels up to 100A. At 100A, the MOSFETs are
dissipating 3.75W each and additional air flow may be
needed to keep them within safe thermal operating limits
for continuous operation.If additional current is required
without sufficient air flow,multiple MOSFETs should be
connected in parallel with the existing MOSFETs to lower
the I2R losses.
Jumper Positions
JUMPER NAME POSITION
JP1 CLK EXT
JP2 ON INTVCC
JP3 ADR0 NC
JP4 ADR1 NC
JP5 ADR2 NC
JP6 WRITE PROTECT LOCK
Powering Up
Connect power supply capable of 120A at 0V to 20V to
the 12V input as shown in Figure 1. Verify cabling shown
in extra bold lines is capable of carrying 100A safely.The
GND connection does not handle high current so no high
current cabling is required.
Generally, an electronic load will be used.If this is true,
use it in the constant resistance mode.Use in constant
current will prevent start up because of current foldback
in the LTC4282. Current foldback is used to minimize
dissipation in the MOSFETs used as pass devices with
the LTC4282. To effect this,current is initially limited to
approximately 1/3 of full limit until the output voltage is
above 10V. If a constant current load is used and set to
100A, the LTC4282 will not start up and a current fault
will be reported.
UV/OV Thresholds
With no load on the output,slowly increase the voltage
on the input to the board.Observe the input voltage when
LED D2 (OUT) illuminates.This voltage should be between
10.7Vand 11.4V.Continueincreasing thevoltage untilD2is
extinguished.Thisshould occur between14.4V and 15.3V.
Output Voltage Slew Rate
With no load connected,observe the output voltage
between turret 12VOUT (E5), and GND.Apply 12V to the
12VIN connector.The output voltage should slew from 0V
to 12V in 10ms to 25ms.
Output Current Limit
Turn off power supply and connect electronic load to the
DC2024 as shown in Figure 1. Disable electronic load.
Adjust power supply to 12V and verify its current level is
set to >120A.
Slowly increase conductance of the electronic load while
monitoring current.As the load increases to around 100A,
the output voltage and current will fall to zero.Note the
current where this occurs. This should be 95A to 105A.
Ability to Charge Output Capacitor
Turn off power supply and disconnect electronic load.
Replace load with a 10,000µF capacitor rated at 15V or
greater. Turn on power supply and observe that the output
voltage rises to 12V indicating the DC2024 has connected
tothe load andsuccessfully chargedtheoutput capacitance.
Monitor the current during the period when the capacitor
is charging, it should be a maximum of 12A.
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DEMO MANUAL DC2024A
Quick start proceDure
Software Control with LTpowerPlay™
LTpowerPlay is a convenient PC software GUI that gives
complete access to the registers of the LTC4282, and
many other Linear Technology powersystem management
parts. Use it in offline mode to build a system configura-
tion file even with no hardware plugged-in,and use it
with hardware connected to configure and debug your
application.LTpowerPlay communicates using the I2C bus
in the demo system (covered in this manual), or in your
real-worldproduct environment.It providesunprecedented
control over the Linear Technology ICs on the I2C bus.
Use it during board bring-up to tune and optimize the
power system parameters.Use it during system debug to
view critical system information and troubleshoot board
design or manufacturing issues.LTpowerPlay includes
extensive help and documentation under the help menu.
Online help includes quick start videos and tutorials,and
detailed technical documentation from the Linear Tech-
nology website.Getting started with LTpowerPlay is easy.
Simply download and install the PC software from here:
http//www.linear.com/ltpowerplay
Figure 2. DC2024A-A Demo Board Connected to DC1613 I2C-to-USB Converter
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DEMO MANUAL DC2024A
Quick start proceDure
The DC1613 USB-to-I2C adapter interfaces the PC running
LTpowerPlay to the DC2024A board.Connect the DC1613
adapter to the PC through a USB cable,and connect the
DC2024A board through the ribbon cable to connector J2.
Launch the LTpowerPlay GUI on the PC.The software
identifies the DC1613 controller,then the DC2024A board,
and begins communicating through the I2C bus with the
LTC4282. Once this communication has been established,
the GUI displays its main window (Figure 3).
The LTpowerPlay GUI divides information into separate
panes in the window.On the left is the system tree pane
(Figure 4), displaying a list of all Linear Technology devices
identified on the I2C bus.For a single LTC4282 device,
the tree is small,but if other supported devices are pres-
ent on the I2C bus,LTpowerPlay will add them.Click on
a device in this list to selectively access it.Information in
other panes pertains to the selected device.
LTpowerPlay System Tree
Figure 3. LTpowerPlay GUI Window
Figure 4. LTpowerPlay System Tree
To the right of the system tree is the configuration register
pane. The Figure 5view shows all of the writable user-
configurable registers available on the selected device.
The GUI offers clickable buttons and fields to edit the
information in these registers.
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DEMO MANUAL DC2024A
Quick start proceDure
Update register contents by clicking or typing to change
the desired registers.Then selecting the PC to RAM button
in the top toolbar (Figure 6). LTpowerPlay writes changes
to the updated registers.
Figure 5. LTpowerPlay Configuration Registers
Right of center in LTpowerPlay is the telemetry pane
(Figure 7), displaying read-only information contained in
the status registers of the selected part.The GUI periodi-
cally polls the I2C bus and updates the telemetry content,
along with a user-friendly interpretation of the bits.
Figure 6. PC to RAM Button
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DEMO MANUAL DC2024A
Quick start proceDure
Figure 7. LTpowerPlay Telemetry
In the upper right corner of LTpowerPlay is the chip dash-
boardpane (Figure8), displaying a graphical representation
of the part status in a friendly,easy-to-understand format.
The meter in the upper left of the panel displays the static
input energy to the card in watts.The small dials in the
center of the input energy meter display the energy used
in kilojoules.The VSOURCE meter displays the voltage
at the SOURCE pin of the LTC4282, which is the same
as VOUT.The Input meter displays the voltage input at
the VDD pin of the LTC4282. VSENSE indicates the input
current derived by dividing the voltage measured across
the sense resistor by the value of the sense resistor.The
power meter displays the SOURCE voltage multiplied
by the current sense voltage and scaled to indicate the
power in watts.VGPIO3displays the voltage at GPIO3
when it is configured as an analog input.The FET Status
annunciators show the status of the pass MOSFETs as
described in the FET-BAD Fault section of the data sheet.
GPIO1, GPIO2and GPIO3show the status of the general
purpose input/output pins.
On the lower right of the GUI window is the telemetry
plot pane (Figure 9). By selecting various measurement
functions in the telemetry pane,a graphic display of that
function versus time is displayed.This gives an instant
indication on how that function varies with time.
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DEMO MANUAL DC2024A
Quick start proceDure
Figure 8. LTpowerPlay Chip Dashboard
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DEMO MANUAL DC2024A
Quick start proceDure
Figure 9. LTpowerPlay Telemetry Plot
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DEMO MANUAL DC2024A
Quick start proceDure
Figure 10. LTC4282 RAM and Non-Volatile Memory
RAM
LTC4282 CHIP
COMPUTER WITH
LTpowerPlay
STORE
RESTORE
LTC4282
LOGIC
EEPROM
I2CBUS
Figure 11. Read Write NVM Buttons on Toolbar
The LTC4282 is highly configurable through its register
set. Refer to the LTC4282 data sheet for a complete
discussion of the registers and functions available.Get
immediate access to detailed help for the selected register
in LTpowerPlay by pressing the F1key on your keyboard.
The LTC4282 features non-volatile EEPROM that holds
device configuration information and a snapshot of past
fault information.When the part receives power it executes
apower-on reset,and restores the contents of the EEPROM
to its operating RAM.Following this power-on restore,op-
erating RAM can be modified with I2C bus commands that
modify the part behavior.These modifications are effected
by using the PC>RAM button in the toolbar.Also included
in the toolbar are buttons for reading the internal RAM
data on the PC by using the RAM>PC button on the tool
bar. Similarly, there are buttons for moving the contents
of the RAM to the NVM (EEPROM) and vice versa using
the RAM>NVM and NVM>RAM buttons on the toolbar.
Programming Socket
The DC2024A-B board includes a programming socket.
This socket in conjunction with the LTpowerPlay software
GUI and DC1613 USB-to-I2C adapter may be used to
program the EEPROM of multiple LTC4282 ICs prior to
their installation on a PC board.
Pleaserefer to ApplicationNote 145,http://cds.linear.com/
docs/en/application-note/AN145f.pdf,and refer to Option
1A. Use the device address 0x88, which is the address to
which the programming socket is hard wired.Also verify
that the LTC4282 already soldered on the board (U1) is
set to a different address than 0x88 to prevent a conflict.
Follow the instructions for Option 1A on page 3of
Application Note 145.
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DEMO MANUAL DC2024A
parts List
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
1 2 C1, C8 CAP., POLARIZED, OPTION NICHICON, UVR1E102MPD OR EQUIVALENT
2 2 C2, C3 CAP., 33pF, X7R, 16V, 5%, 0603 AVX, 0603YC330JAT2A
3 1 C4 CAP., OPTION, 0603 N/A
4 2 C5, C14 CAP., 0.1µF, X7R, 16V,10%, 0603 AVX, 0603YC104KAT2A
5 1 C6 CAP., 1µF, X7R, 16V, 10%, 0603 AVX, 0603YC105KAT2A
6 1 C7 CAP., 0.47µF, X7R, 16V, 10%, 0603 TDK, C1608X7R1C474K
7 2 C9, C10 CAP., 0.01µF, X7R, 50V, 10%, 0603 AVX, 06035C103KAT2A
8 2 C11, C12 CAP., 0.022µF, X7R, 50V, 5%, 0805 KEMET, C0805C223J5RACTU
9 1 C13 CAP., 0.1µF, X7R, 25V, 20%, 0603 TDK, C1608X7R1E104M080AA
10 7 D1-D3, D6-D9 LED, GREEN, WATERCLEAR, 0805 WURTH, 150080GS75000
11 2 D4, D5 LED, RED, WATERCLEAR, 0805 WURTH, 150080RS75000
12 4 D10-D12, D15 DIODE, TVS, 28V, SMC DIODES INC./ ZETEX, SMCJ28A-13
13 0 D13, D14 NO STUFF NO STUFF
14 2 E1, E2 ONE-HOLE, OFFSET FLOATING TONGUE LUG PANDUIT, CB175-38-QY
15 20 E3-E20, E22, E23 TEST POINT, TURRET, .064 MTG. HOLE,
.125" THICK PCB
MILL-MAX, 2308-4-00-80-00-00-07-0
16 1 E21 BANANA JACK, NON-INSULATED KEYSTONE, 575-4
17 1 J1 CONN., HEADER, 2×7, 2mm, SHROUDED,
THRU-HOLE, VERTICAL
MOLEX, 87831-1420
18 1 J2 CONN., HEADER, 12 POS 2mm FCI, 98414-G06-12ULF
19 2 JP1, JP6 CONN., HEADER, 1×3, 2mm, THRU-HOLE,
VERTICAL
SAMTEC, TMM-103-02-L-S
20 4 JP2-JP5 CONN., HEADER, 1×4, 2mm, THRU-HOLE,
VERTICAL
SAMTEC, TMM-104-02-L-S
21 4 MP1-MP4 BUMPER, RECESSED, #4 SCREW, BLACK KEYSTONE, 727
22 4 MP5-MP8 WASHER, FLAT, SS 18-8, #4 BOLT DEPOT, 5563
23 4 MP9-MP12 MACHINE SCREW, #4-40 × 1/2 PHILLIPS
PAN HEAD, ZINC
BOLT DEPOT, 7593
24 4 MP13-MP16 LOCK WASHER, INT. TOOTH, ZINC, #4 BOLT DEPOT, 3011
25 4 MP17-MP20 HEX NUT, #4-40, SS 18-8 BOLT DEPOT, 4115
26 2 MP21, MP22 HEX NUT, FULL, 3/8-16, 9/16 IN. GRAINGER, 1WB27
27 2 MP23, MP25 FLAT WASHER, SS 18-8, 3/8 IN. GRAINGER, 6FDG6
28 2 MP26, MP27 LOCK WASHER, INT., 0.398 IN. ID GRAINGER, 2DE18
29 2 MP28, MP29 HEX HEAD BOLT, 3/8-16 × 1-1/8 IN. GRAINGER, 30Z861
30 2 Q1, Q2 TRANSISTOR, MOSFET, D2PAK NXP, PSMN1R5-30BLE,118
31 3 Q3-Q5 TRANS., MOSFET N-CH., 60V SOT-23 VISHAY SILICONIX, 2N7002K-T1-GE3
32 0 Q6, Q7 NO STUFF NO STUFF
33 0 Q8, Q10, Q13, Q15 NO STUFF NO STUFF
34 0 Q9, Q11, Q12, Q14 NO STUFF NO STUFF
35 1 R1 RES., 34.8k, 1/10W, 1%, 0603 YAGEO, RC0603FR-0734K8L
36 1 R2 RES., 1.18k, 1/10W, 1%, 0603 YAGEO, RC0603FR-071K18L
37 1 R3 RES., 3.4k, 1/10W, 1%, 0603 YAGEO, RC0603FR-073K4L
38 5 R4-R6, R17, R18 RES., 10k, 1/4W, 5%, 1206 PANASONIC, ERJ-8GEYJ103V
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DEMO MANUAL DC2024A
parts List
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
39 1 R7 RES., 22.1k, 1/10W, 1%, 0603 YAGEO, RC0603FR-0722K1L
40 4 R8, R10, R11, R21 RES., 3.01k, 1/10W, 1%, 0603 YAGEO, RC0603FR-073K01L
41 3 R9, R19, R20 RES., OPTION, 0603 N/A
42 4 R12-R14, R22 RES., 5.11k, 1/10W, 1%, 0603 YAGEO, RC0603FR-075K11L
43 11 R15, R16, R135, R140-R142,
R151-R155
RES., 0Ω, 1/10W, 0603 YAGEO, RC0603JR-070RL
44 40 R23, R24, R26-R29, R31-R34,
R36-R39, R42-R44, R46, R48-R51,
R53-R56, R58-R61, R63-R66,
R68-R71, R74, R75
RES., 1Ω, 1/16W, 1%, 0402 VISHAY, CRCW04021R00FKED
45 10 R25, R30, R35, R41, R47, R52, R57,
R62, R67, R72
RES., 0.003Ω, METAL ELEMENT, 1%, 2W
2512
OPTEK TECHNOLOGY (TT ELECTRONICS),
LRMAT2512-R003FT4
46 10 R40, R73, R143-R150 RES., 10Ω, 1/10W, 5%, 0603 YAGEO, RC0603JR-0710RL
47 2 R45, R76 RES., 59k, 1/10W, 1%, 0603 VISHAY DALE, CRCW060359K0FKEA
48 0 R77, R78, R80-R83, R85-R88,
R90-R95, R97-R100, R102, R103,
R105-R108, R110-R113, R115-R120,
R122-R125, R127-R130, R132, R133
NO STUFF NO STUFF
49 0 R79, R84, R89, R96, R101, R109,
R114, R121, R126, R131
NO STUFF NO STUFF
50 0 R104, R134 NO STUFF NO STUFF
51 1 R136 RES., 2k, 1/10W, 1%, 0603 YAGEO, RC0603FR-072KL
52 0 R137-R139 NO STUFF NO STUFF
53 0 SKT1 NO STUFF -A, SOCKET -B PLASTRONICS, 32QN50515050-E
54 0 TP1-TP8 NO STUFF NO STUFF
55 1 U1 IC, HI-CURRENT HOT SWAP CONTROLLER,
QFN
LINEAR TECH., LTC4282CUH#PBF
56 1 U2 IC, SERIAL EEPROM, 2k BIT, 400kHz,
TSSOP-8
MICROCHIP TECH., 24LC025-I/ST
57 6 XJP4-XJP6, XJP10-XJP12 SHUNT, 2mm SAMTEC, 2SN-BK-G
58 1 Y1 CRYSTAL, 4MHz, SMT ABRACON, ABLS-4.000MHZ-B4-T
59 0 Y2 NO STUFF NO STUFF
60 3 Z1-Z3 DIODE, ZENER 5.1V 500mW SOD-123 FAIRCHILD, MMSZ5231B
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DEMO MANUAL DC2024A
schematic Diagram
A A
B B
C C
D D
E E
4 4 3 3 2 2 1 1
SCL
GPI01
= HIGH-CURRENT CONNECTIONS
CONNECTIONS TO PAGES 2 AND 3
GND GPI02 GPI03
IN
GPIO3 GPIO2
GPIO1
OUT
(300K)
(0.1u)
ON
INTVCC
FLOAT GND
WRITE PROTECTADR0ADR1ADR2
LOCK
WRITE
H
NC
L
H
NC L
+12V IN
+12V OUT
+12V OUT
Quik Eval
DC2024A-B STUFFED
LTC SKU# SKT 1 ( PAGE 4 )
ASSEMBLY OPTIONS
NOT STUFFEDDC2024A-A
UNLESS OTHERWISE NOTED: 1. ALL RESISTORS THIS PAGE ARE 1% 0603. 2. ALL CAPACITORS THIS PAGE ARE 0603.
INT EXT
CLK
DC 1613
ALERT SCL SDA
+12V IN
ON GND SDA SCL
ALERT EXT 5V
GND
(SHORT PIN)
INT VCC
TIMER
OV UV
OPT
GND
GND
100 AMPS
WITH I²C COMPATIBLE MONITORING AND EEPROM
TM
HIGH CURRENT HOT SWAP CONTROLLER
INTVCC
INTVCC
GPIO3 GPIO2
GPIO2 GPIO3
SCL
SDA
SDA
SDA SCL
SCL
GPIO1
GPIO1
GPIO2
+5V
+5V
+5V
+5V
+5V
+5V
SOURCE
INPUT
SENSE+1 SENSE-1
ADC-
GATE2
SDA SCL
SENSE-2SENSE+2
ADC+
GATE1
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG.
Fax: [phone] Milpitas, CA 95035 Phone: [phone] McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
15
N/A
M.HAWKINS
BOB SMITH
710-DC2024A REV 05
Friday, May 22, 2015
DC2024A-A
LTC4282IUH
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG.
Fax: [phone] Milpitas, CA 95035 Phone: [phone] McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
15
N/A
M.HAWKINS
BOB SMITH
710-DC2024A REV 05
Friday, May 22, 2015
DC2024A-A
LTC4282IUH
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG.
Fax: [phone] Milpitas, CA 95035 Phone: [phone] McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
15
N/A
M.HAWKINS
BOB SMITH
710-DC2024A REV 05
Friday, May 22, 2015
DC2024A-A
LTC4282IUH
E1
E13
R18 10k
E6
R12 5.11k
R3
3.4k
R11 3.01k
R10 3.01k E21
E3
R1 34.8k
E18
C3 33pF
D3 GREEN
21
J1
VUNREG 1
GND 3
MISO 5
MOSI/SDA 7
EESDA 9
EESCL 11
GND 13
VCCIO 2
SCK/SCL 4
CS 6
GND 8
EEVCC 10
EEGND 12
GPIO 14
C6
1.0uF
D5
RED
21
JP1
1 3 2
E2
C13 0.1uF
R20 OPT
Y1
4.0 Mhz
12
R22 5.11k
R19 OPT
Z3 MMSZ5231B
5.1V
1 2
E12
Q5
2N7002
3
1
2
R7 22.1k
Z1 MMSZ5231B 5.1V
1 2
E10
R154 0.0
U1
LTC4282
UV
32
OV
2
SDAI
12
SDAO
13
ALERT
15
VCC
5
TIMER
6
ADR0
9
ADR1
10
ADR2
11
LOCK
4
GND
3
KGND
20
CLK_O 7
CLK_I 8
GPIO3 17 GPIO2 18 GPIO1 19
FB 21
ON 1
SOURCE 22
GATE1 23
GATE2 24
SENSE-2 25
ADC- 26
SENSE-1 27
SENSE+2 28
ADC+ 30
SCL
14
NC
16
SENSE+1 29
VDD 31
EXPOSED PAD
33
R152 0.0
R6 10k
R5 10k
E7
JP6
1 3 2
JP2
1 2 3 4
D15
SMCJ28A
2 1
C4
OPT
C2 33pF
R8 3.01k
E8
JP5
1 2 3 4
E16
E14
C14 0.1uF
D8 GREEN
21
R2
1.18k
R16 0.0
Q4
2N7002
3
1
2
D1
GREEN
21
D2
GREEN
21
R155 0.0
TP1
R14 5.11k
E5
E17
J2
AUXP 1
SDA 2
GND 3
SCL 4
LGKPWR 5
ALERTB 6
GPIO_1 7
OUTEN_0 8 OUTEN_1 9
GND 10
AUXSCL 11
AUXSDA 12
E4
C7
.068uF
R4 10k
JP4
1 2 3 4
JP3
1 2 3 4
U2
24LC025-I /ST
SDA 5
VCC 8
A0
1
A1
2
A2
3
VSS
4
WP 7
SCL 6
R153 0.0
Z2 MMSZ5231B
5.1V
1 2
Q3
2N7002
3
1
2
D6 GREEN
21
R13 5.11k
R21 3.01k
R15 0.0
R151
0.0
D9 GREEN
21
E19
E15
E20
D7 GREEN
21
R17 10k
TP2
E11
Y2
13
2
R9 OPT
E9
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.

15
dc2024afa
DEMO MANUAL DC2024A
schematic Diagram
A A
B B
C C
D D
E E
4 4 3 3 2 2 1 1
=HIGH CURRENT CONNECTIONS "RS1"
"RS2"
UNLESS OTHERWISE NOTED: 1. ALL RESISTORS THIS PAGE ARE 1% 0402. 2. ALL CAPACITORS THIS PAGE ARE 0603. 3. ALL 0.003 OHM SENSE RESISTORS ARE SIZE 2512.
PRIMARY SIDE
PRIMARY SIDE
GATE2
SENSE+1
ADC+
SENSE+2
ADC-
SENSE-2 SENSE-1
PRIMARY SIDE
GATE1
"Q1" PRIMARY SIDE "Q2"
(TO BOTTOM SIDE)
(TO BOTTOM SIDE)
WITH I²C COMPATIBLE MONITORING AND EEPROM
HIGH CURRENT HOT SWAP CONTROLLER
(OPT)
(OPT)
(OPT)
(OPT)
ADC+
OPTIONAL
NICHICON P/N UVR1E102MPD
OR EQUIVALENT
OPTIONAL
NICHICON P/N UVR1E102MPD
OR EQUIVALENT
1000 uF
1000 uF
OPT OPT
INPUT
SOURCE
ADC+
SENSE+1
SENSE+2
GATE2
SENSE-2 SENSE-1 ADC-
INPUT
GATE1
A B
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG.
Fax: [phone] Milpitas, CA 95035 Phone: [phone] McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
25
N/A
M.HAWKINS
BOB SMITH
710-DC2024A REV 05
Friday, May 22, 2015
DC2024A-A
LTC4282IUH
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG.
Fax: [phone] Milpitas, CA 95035 Phone: [phone] McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
25
N/A
M.HAWKINS
BOB SMITH
710-DC2024A REV 05
Friday, May 22, 2015
DC2024A-A
LTC4282IUH
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG.
Fax: [phone] Milpitas, CA 95035 Phone: [phone] McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
25
N/A
M.HAWKINS
BOB SMITH
710-DC2024A REV 05
Friday, May 22, 2015
DC2024A-A
LTC4282IUH
R30 3 mohm
+
C1
12
R58 1.0
C10 0.027uF
50V
R45 59k
Q10
PSMN2R0-30YLE 4
2 3
51
Q8
PSMN2R0-30YLE 4
2 3
51
R60 1.0
C12 0.022uF
D11 SMCJ28A
2 1
Q2
PSMN1R5-30BLE 1
34
R23 1.0
R69 1.0 R75 1.0 R24 1.0 R54 1.0 R32 1.0
R73 10
R59 1.0
C9 0.027uF
50V
E22
R26 1.0
R51 1.0 R37 1.0
Q1
PSMN1R5-30BLE 1
34
R65 1.0
R57 3 mohm
TP6
1
R28 1.0
R27 1.0 R29 1.0
R62 3 mohm R35 3 mohm R41 3 mohm
R144 10
D10 SMCJ28A
2 1
R70 1.0 R42 1.0 R36 1.0 R50 1.0
C11 0.022uF
R61 1.0
+
C8
12
Q11
N-CHANNEL UNIVERSAL 1
23
R52 3 mohm
R34 1.0
R38 1.0
D12 SMCJ28A
2 1
R53 1.0
R25 3 mohm
Q9
N-CHANNEL UNIVERSAL 1
23
R39 1.0
R67 3 mohm R72 3 mohm
R48 1.0
R40 10
D13 SMCJ28A
2 1
R55 1.0
R43 1.0
TP4 1
R49 1.0
R46 1.0
R71 1.0
R68 1.0
E23
R145 10
R64 1.0 R66 1.0
TP5 1
R76 59k
TP3 1
R47 3 mohm
D14 SMCJ28A
2 1
R146 10
R63 1.0
R44 1.0 TP7
1
R33 1.0
R143 10
R31 1.0
R56 1.0
TP8
1
R74 1.0
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.

16
dc2024afa
DEMO MANUAL DC2024A
schematic Diagram
A A
B B
C C
D D
E E
4
4
3
3
2
2
1
1
SECONDARY SIDE STUFFING OPTIONS, THIS PAGE
SECONDARY SIDE SECONDARY SIDE
"RS1" "RS2"
(FROM TOP SIDE)
(FROM TOP SIDE)
SECONDARY SIDE
"Q1" SECONDARY SIDE "Q2"
WITH I²C COMPATIBLE MONITORING AND EEPROM
HIGH CURRENT HOT SWAP CONTROLLER
(OPT)
(OPT)
(OPT)
(OPT)
(OPT) (OPT)
=HIGH CURRENT CONNECTIONS
2. ALL OPTIONAL SENSE RESISTORS ARE SIZE 2512. UNLESS OTHERWISE NOTED: 1. ALL RESISTORS THIS PAGE ARE 1% 0402.
INPUT
SENSE-2 SENSE-1
ADC-ADC+
SENSE+1
SENSE+2
SOURCE
GATE2
GATE1
A
B
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG.
Fax: [phone] Milpitas, CA 95035 Phone: [phone] McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
35
N/A
M.HAWKINS
BOB SMITH
710-DC2024A REV 05
Friday, May 22, 2015
DC2024A-A
LTC4282IUH
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG.
Fax: [phone] Milpitas, CA 95035 Phone: [phone] McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
35
N/A
M.HAWKINS
BOB SMITH
710-DC2024A REV 05
Friday, May 22, 2015
DC2024A-A
LTC4282IUH
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG.
Fax: [phone] Milpitas, CA 95035 Phone: [phone] McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
35
N/A
M.HAWKINS
BOB SMITH
710-DC2024A REV 05
Friday, May 22, 2015
DC2024A-A
LTC4282IUH
R133 OPT R128 OPT
Q6
STV300NH02L
1
5 6 7 8 2 3 9 10
11
4
R83 OPT
R105 OPT R103 OPT
R115 OPT
R111 OPT R108 OPT
Q15
PSMN2R0-30YLE
4
2 3
51
R118 OPT
R120 OPT R116 OPT
R87 OPT
R96 OPT
R107 OPT
R149 10
R79 OPT
R102 OPT
R114 OPT
R98 OPT
R124 OPT
R81 OPT R86 OPT
R121 OPT
R99 OPT
Q14
N-CHANNEL UNIVERSAL
1
23
R150 10
R112 OPT
R78 OPT
R104 10
R109 OPT
R129
OPT
R93 OPT
Q12
N-CHANNEL UNIVERSAL
1
23
R94 OPT
R147 10
R126 OPT R101 OPT
R110 OPT
R88 OPT
R97 OPT
R130 OPT R100 OPT R91 OPT
R127 OPT R77 OPT
R89 OPT
R148 10
R131 OPT
R125 OPT
R82 OPT R90 OPT R122 OPT
R106 OPT
R92 OPT
Q7
STV300NH02L
1
5 6 7 8 2 3 9 10
11
4
R84 OPT
R80 OPT
R123 OPT
Q13
PSMN2R0-30YLE
4
2 3
51
R117 OPT
R134 10
R113 OPT R95 OPT
R85 OPT R132
OPT
R119 OPT
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.

17
dc2024afa
DEMO MANUAL DC2024A
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use.Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
schematic Diagram
A
A
B
B
C
C
D
D
E
E
4 4 3 3 2 2 1 1
OPTIONAL PROGRAMMING SOCKET,
SOCKET POWER 0N
UNLESS OTHERWISE NOTED:
1. ALL RESISTORS THIS PAGE ARE 0603.
INSTALLED ON -B ASSEMBLY OPTION
SOCKET POWER
WITH I²C COMPATIBLE MONITORING AND EEPROM
HIGH CURRENT HOT SWAP CONTROLLER
+5V
SDA
SCL
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG.
Fax: [phone] Milpitas, CA 95035 Phone: [phone] McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
45
N/A
M.HAWKINS
BOB SMITH
710-DC2024A REV 05
Friday, May 22, 2015
DC2024A-A
LTC4282IUH
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG.
Fax: [phone] Milpitas, CA 95035 Phone: [phone] McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
45
N/A
M.HAWKINS
BOB SMITH
710-DC2024A REV 05
Friday, May 22, 2015
DC2024A-A
LTC4282IUH
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG.
Fax: [phone] Milpitas, CA 95035 Phone: [phone] McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
45
N/A
M.HAWKINS
BOB SMITH
710-DC2024A REV 05
Friday, May 22, 2015
DC2024A-A
LTC4282IUH
C5
0.1uF
R138 OPT
D4 RED
21
R139 OPT
SKT1
TEST SOCKET
UV
32
OV
2
SDAI
12
SDAO
13
ALERT
15
VCC
5
TIMER
6
ADR0
9
ADR1
10
ADR2
11
LOCK
4
GND
3
KGND
20
CLK_O 7
CLK_I 8
GPIO3 17 GPIO2 18 GPIO1 19
FB 21
ON 1
SOURCE 22
GATE1 23
GATE2 24
SENSE-2 25
ADC- 26
SENSE-1 27
SENSE+2 28
ADC+ 30
SCL
14
NC
16
SENSE+1 29
VDD 31
EXPOSED PAD
33
R135 0.0
R136 2k
R140 0.0
R141 0.0
R137 OPT
R142 0.0
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.

18
dc2024afa
DEMO MANUAL DC2024A
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ●FAX: [phone] ●www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2015
LT 0116 REV A • PRINTED IN USA
DEMONSTRATION BOARD IMPORTANT NOTICE
Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions:
This demonstration board (DEMO BOARD)kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT
OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use.As such,the DEMO BOARD herein may not be complete
in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety
measures typically found in finished commercial goods.As a prototype,this product does not fall within the scope of the European Union
directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive,or other regulations.
If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date
of delivery for a full refund.THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU
OF ALL OTHER WARRANTIES,EXPRESSED,IMPLIED,OR STATUTORY,INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE.EXCEPT TO THE EXTENT OF THIS INDEMNITY,NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR
ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
The user assumes all responsibility and liability for proper and safe handling of the goods.Further,the user releases LTC from all claims
arising from the handling or use of the goods.Due to the open construction of the product,it is the user’s responsibility to take any and all
appropriate precautions with regard to electrostatic discharge.Also be aware that the products herein may not be regulatory compliant or
agency certified (FCC, UL, CE, etc.).
No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance,
customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.
Please read the DEMO BOARD manual prior to handling the product.Persons handling this product must have electronics training and
observe good laboratory practice standards. Common sense is encouraged.
This notice contains important safety information about temperatures and voltages.For further safety concerns,please contact a LTC application
engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation
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