Microsemi LX2206 User manual

LX2206 EVALUATION BOARD USER GUIDE
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
Page 1
Copyright ©2002
Rev. 1.1, 2006-11-17
LX2206 DUAL LEVEL BATTERY
CHARGER
TM ®

LX2206 EVALUATION BOARD USER GUIDE
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
Page 2
Copyright ©2002
Rev. 1.1, 2006-11-17
TABLE OF CONTENTS
Introduction ............................................................................................................................................................ 3
Schematic .............................................................................................................................................................. 4
IC Block Diagram................................................................................................................................................... 5
Evaluation Board Connections............................................................................................................................... 6
Typical Test Hookup .............................................................................................................................................. 7
PCB Layout Recommendations............................................................................................................................. 7
Evaluation Board Layout........................................................................................................................................ 8
Evaluation Board Bill of Materials.......................................................................................................................... 9

LX2206 EVALUATION BOARD USER GUIDE
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
Page 3
Copyright ©2002
Rev. 1.1, 2006-11-17
INTRODUCTION TO PRODUCT
The LX2206 Evaluation Board is available from Microsemi for evaluating the performance of the LX2206 Battery Charger
integrated circuit. The component sizes used on the evaluation board facilitate easy probing, however, in practice, smaller
component sizes are recommended to minimize the circuit physical size.
KEY FEATURES
Two independent programmable charge currents
0.5% Float voltage tolerance
Charging up to 1A.
Charging from USB port.
USB current compliance
Full battery Indicator
CC/CV w thermal Feedback
Battery temp monitor
Precision charge termination
Power Good Indicator
APPLICATIONS
MP3 player
PDA
PMC
Digital Camera
Charge cradle
PART SPECIFIC INFORMATION
Part Number Product
LX2206ILD Dual Level Lithium Ion Battery Charger
TABLE 1–PART INFORMATION
IC EVALUATION BOARDS
LX2206ILD LX2206 EVAL KIT
TABLE 2–EVALUATION BOARD INFORMATION

LX2206 EVALUATION BOARD USER GUIDE
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
Page 4
Copyright ©2002
Rev. 1.1, 2006-11-17
SCHEMATIC FOR LX2206 EVALUATION BOARD
PWR
I PGM
Current
Programming
STATUS
Battery
Temperature
Lockout
Sensing
IN
BAT
SD
H/L
HCP TMP
DCOK
STAT
GND
CMP
LCP
2.49k
2.49k
2.49k
19.6k 110k
24.9k
121k
0.47u
10uF
GND
C1
C3
1.00k
R1
R5 R4
SHUTDOWN
1.00k
R2
ON
OFF
L
H
CHARGING
R6
R3
R7
FULL
POWER
ATTACHED
RT1
R10
R8
Not
Used
R9
NTC
RTN
BAT TEMP
10uF
BAT+
RTN
BATTERY
C2
1
2
6
5
8
7
BP
3
4
9
10
LX2206
Figure 1 – LX2206 Evaluation Board Schematic

LX2206 EVALUATION BOARD USER GUIDE
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
Page 5
Copyright ©2002
Rev. 1.1, 2006-11-17
BLOCK DIAGRAM
IN BAT
CHARGE
CONTROL
GND
HIGH
CHARGING
CURRENT
HCP
TEMPERATURE
CONTROL
CONSTANT
VOLTAGE
CONTROL
CHARGE
TERMINATION
CONTROL
ENABLE
SD
UVLO
+
-
STAT
LOW
CHARGING
CURRENT
LCP
H/L
DCOK
TMP
COND.
CURRENT
CONDITIONING
THRESHOLD
Figure 2 – Simplified Block Diagram

LX2206 EVALUATION BOARD USER GUIDE
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
Page 6
Copyright ©2002
Rev. 1.1, 2006-11-17
LX2206 EVAL CONNECTIONS
Connections: The LX2206 Evaluation Board has
one power input and one power output connection.
FUNCTION PIN NAME VOLTAGE
Input Power PWR 5V +/- 0.65V
Input RTN GND 0V
Battery + BAT+ 0V to 4.3V
Battery - RTN 0V
Jumpers: The LX2206 Evaluation Board has two
position jumper blocks. The jumper can be moved to
select either a high logic level or low logic level. It is
also possible to remove the jumper and apply a
voltage directly to the center pin of the jumper block.
Hookup: The following is a demonstration scenario
that can be used to evaluate the LX2206.
1) Apply the single cell Lithium Ion or Lithium
polymer battery to the battery screw terminal
block. Be sure to connect the positive
terminal of the battery to the BAT+ terminal
and the Negative terminal to the RTN
terminal.
2) Apply a +5V power source to the PWR
terminal and the power supply return to the
GND terminal.
3) Move the SHUTDOWN jumper to the ON
position.
4) The POWER ATTACHED and CHARGING
LEDs should be lit when the battery is
charging and the POWER ATTACHED and
FULL LEDs should be lit when the battery is
fully charged.
5) Monitor the charge current into the battery
with a current probe.
6) Verify that the current changes levels
between approximately 92mA and 460mA
when the I PGM jumper is moved between
its two positions.
7) Verify that moving the SHUTDOWN battery
to the OFF position extinguishes the LEDs
and terminates the charge cycle.
8) The thermal lockout can be tested by
removing RT1 and replacing it with a
variable resistor to simulate the resistance of
RT1 under extreme hot and cold conditions.

LX2206 EVALUATION BOARD USER GUIDE
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
Page 7
Copyright ©2002
Rev. 1.1, 2006-11-17
LX2206 TYPICAL TEST HOOKUP
I PGM
3
R7
BAT+ RTN
R8
R9 R10
R1
1
1
3
BATTERY
3
SHUTDOWN
GND
PWR
R3
R2
C2
R4
R6
313
CHARGING
1
C1
INTEGRATED PRODUCTS
1
RTN
OFF
ON
C3
LX2206
RT1
FULL
R5
1
L
H
13
ATTACHED
POWER
BAT TEMP
NTC
STATUS
LX2206 DUAL LEVEL LITHIUM-ION
BATTERY CHARGER EVAL PCB
Single Cell
Lithium Ion
Battery
-
+
5V Power
Supply
+
-
Figure 3 – LX2206 Typical Test Hookup
PCB LAYOUT RECOMMENDATIONS
It is recommended that C1 and C2 be located within
1cm of the LX2206. The CMP capacitor should be
located close to the IN and CMP pins. Also the high
impedance summing node connecting to the TMP pin
should be kept relatively short to prevent the coupling
of noise into this node. It is important that the LX2206
have a good thermal path to ambient to dissipate
heat. The simplest way to do this is to heatsink the
LX2206 bottom pad directly to the ground plane by
placing 4 or more vias in the ground pad directly
under the LX2206 footprint.

LX2206 EVALUATION BOARD USER GUIDE
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
Page 8
Copyright ©2002
Rev. 1.1, 2006-11-17
LX2206 PRINTED CIRCUIT BOARD LAYOUT
I PGM
3
R7
BAT+ RTN
R8
R9 R10
R1
1
1
3
BATTERY
3
SHUTDOWN
GND
PWR
R3
R2
C2
R4
R6
313
CHARGING
1
C1
INTEGRATED PRODUCTS
1
RTN
OFF
ON
C3
LX2206
RT1
FULL
R5
1
L
H
13
ATTACHED
POWER
BAT TEMP
NTC
STATUS
LX2206 DUAL LEVEL LITHIUM-ION
BATTERY CHARGER EVAL PCB
Figure 4 – LX2206 Evaluation Board Layout

LX2206 EVALUATION BOARD USER GUIDE
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
Page 9
Copyright ©2002
Rev. 1.1, 2006-11-17
LX2206 EVALUATION BOARD BILL OF MATERIALS
MISCELLANEOUS COMPONENTS
Line
Item Part Description Manufacturer & Part # Case Reference
Designators Qty
1 Microsemi IC – Dual Level Li-Ion Charger MICROSEMI LX2206ILD 3x3 MLP U1 1
2 LED - Amber PANASONIC LNJ414K8YRA 0603 CHARGING 1
3 LED - Red PANASONIC LNJ214K8ARA 0603 FULL 1
4 LED - Green PANASONIC LNJ314G8TRA 0603 POWER ATTACH 1
5 Thermistor – NTC, 100k VISHAY NTHS0402N01N1003J 0402 RT1 1
6 Terminal Block 2 position/ 7mm spacing OST OST/2/7.0 BATTERY 1
7 Header 3 pin 0.100in spacing I PGM, SHUTDN 2
8 Header 2 pin 0.100in spacing BAT TEMP 1
9 Header 1 pin PWR, GND 2
10 Jumper, 2 Pos, 0.100 inch spacing I PGM, SHUTDN 2
11 Printed Circuit Board MICROSEMI SGE#3541 X1 1
CAPACITORS
Line
Item Part Description Part Number Case Reference
Designators Qty
1 Capacitor, X5R, 10uF, 10V, 10% TAIYO YUDEN LMK316BJ106KD-T 1206 C1,2 2
2 Capacitor, X7R, 0.47uF, 16V, 20% TAIYO YUDEN EMK212BJ474KD-T 0805 C3 1
RESISTORS
Line
Item Part Description Part Number Case Reference
Designators Qty
1 Resistor, 1.00K, 1%, 1/10W PANASONIC ERJ-6ENF1001V
0805 R1,2 2
2 Resistor, 2.49K, 1%, 1/10W PANASONIC ERJ-6ENF2491V
0805 R3,6,7 3
3 Resistor, 110K, 1%, 1/10W PANASONIC ERJ-6ENF1103V
0805 R4 1
4 Resistor, 19.6K, 1%, 1/10W PANASONIC ERJ-6ENF1962V
0805 R5 1
5 Resistor, 121K, 1%, 1/10W PANASONIC ERJ-6ENF1213V 0805 R8 1
6 Resistor, 24.9K, 1%, 1/10W PANASONIC ERJ-6ENF2492V
0805 R10 1