Torex XCL102 Series User manual

1/20
XCL102/XCL103
Series
Inductor Built-in Step-up “micro DC/DC” Converter (micro DC/DC)
■GENERAL DESCRIPTION
The XCL102/XCL103 series is a synchronous step-up micro DC/DC converter which integrates an inductor and a control IC
in one tiny package (2.0mm×2.5mm, h=1.0mm). Astablestep-up power supply is configured using onlytwo capacitors connected
externally. An internal coil simplifies the circuit and enables minimization of noise and other operational trouble due to the circuit
wiring. A wide operating voltage range of 0.9V to 6.0V enables support for applications that require an internally fixed output
voltage (2.2V to 5.5V). PWM control (XCL102) or automatic PWM/PFM switching control (XCL103) can be selected.
During the devices enter stand-by mode, XCL102D/XCL103D types prevent the application malfunction by CLDischarge
Function which can quickly discharge the electric charge at the output capacitor (CL). XCL102/XCL103E types is able to drive
Real Time Clock etc.
■APPLICATIONS
●Portable equipment
●Beauty & health equipment
●Wearable devices
●Game & Hobby
●PC Peripherals
●Devices with 1~3 Alkaline,
1~3 Nickel Hydride, 1 Lithium and 1 Li-ion
■FEATURES
Input Voltage Range
: 0.9V
～
6.0V (Absolute Max. Rating: 7.0V)
Fixed Output Voltage
: 2.2V
～
5.5V (0.1V increments)
Oscillation Frequency
: 3.0MHz (±20%)
Input Current
: 0.8A
Output Current
: 500mA @V
OUT
=5.0V, V
BAT
=3.3V (TYP.)
350mA @VOUT=3.3V, VBAT =1.8V (TYP.)
Control Mode Selection
Load Transient Response
: PWM (XCL102 Series) or
Auto PWM/PFM (XCL103 Series)
:
100mV@VOUT=3.3V,VBAT=1.8V,IOUT=1mA
→200mA
Protection Circuits
: Over-current limit (Integral latch method)
Output short-circuit protection
Functions
: Soft-start
Load Disconnection Function (D type)
C
L
Auto Discharge Function (D type)
Bypass Switch Function (E type)
Output Capacitor
: Ceramic Capacitor
OperatingAmbientTemperature
: -40
℃～
+85
℃
Package
: CL-2025-02
Environmentally Friendly
: EU RoHS Compliant, Pb Free
■
TYPICALAPPLICATION CIRCUIT
ETR28011-002
☆
GreenOperation-Compatible
■TYPICAL PERFORMANCE
CHARACTERISTICS
XCL103D503CR-G/XCL103E503CR-G
C
L
7
8
1
2
34
5
6
Lx
VOUT
VBAT
GND
CE
GND
V
OUT
V
BAT
V
CE
C
IN
L1
L2

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XCL102/XCL103 Series
■BLOCK DIAGRAM
●XCL102D/XCL103D series
* Diodes inside the circuits are ESD protection diodes and parasitic diodes.
* XCL102 series chooses only PWM control.
●XCL102E/XCL103E series
* Diodes inside the circuits are ESD protection diodes and parasitic diodes.
* XCL103 series chooses only PWM control.
V
DD
MAX
R
FB1
Load Disconnect
Controller
CEController
Logic
PWM
Comparator Buffer
Drive
L
X
V
BAT
V
OUT
Current sense
Short-circuit
protection
Latch Timer
Vref with
Soft Start
C
FB
Inductor
GND
L2 L1
PFM/PWM
Controller Logic
V
DD
CE
V
OUT
C
L
Discharge
Error Amp.
Phase
Compensation
RAMP Wave
Generator OSC
R
FB2
FB
V
OUT
VDD MAX
RFB1
Load Disconnect
Controller
CEController
Logic
PWM
Comparator Buffer
Drive
L
X
V
BAT
V
OUT
Current sense
Short-circuit
protection
Latch Timer
Vref with
Soft Start
CFB
Inductor
GND
L2 L1
PFM/PWM
Controller Logic
VDD
CE
VOUT
Bｙpass SW
Error Amp.
Phase
Compensation
RAMP Wave
Generator OSC
RFB2
FB
VOUT

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XCL102/XCL103
Series
■PRODUCT CLASSIFICATION
●Ordering Information
XCL102①②③④⑤⑥-⑦PWM control
XCL103①②③④⑤⑥-⑦PWM/PFM automatic switching control
●Selection guides
■PIN CONFIGURATION
■PINASSIGNMENT
■FUNCTION CHART
PIN NAME SIGNAL STATUS
CE L Stand-by
H Active
* Do not leave the CE pin open.
DESIGNATOR ITEM SYMBOL DESCRIPTION
①Type
D
Refer to Selection Guide
E
②③ Output Voltage 22～55
Output Voltage options
e.g.)3.3V → ②=3, ③=3
5.0V →
②
=5,
③
=0
④
Oscillation Frequency
3
3.0MHz
⑤⑥-⑦(*1) Package (Order Unit) CR-G CL-2025-02 (3,000pcs/Reel)
TYPE Output
Voltage Chip Enable Soft-Start CL Auto- Discharge Bypass Switch Load Disconnection Current Limit (with integral latch)
Short
Protection
with latch
D
Fixed
Yes
Fixed
Yes
No
Yes
Yes
Yes
E
Fixed
Yes
Fixed
No
Yes
No
Yes
Yes
PIN NUMBER PIN NAME FUNCTIONS
1
VBAT
Power Input
2
GND
Ground
3
CE
Chip Enable
4
GND
Ground
5
Lx
Switching
6
V
OUT
Output Voltage
7
L1
Inductor Electrodes
8
L2
* If the pad needs to be connected to other pins, it should be connected to the GND.
(*1) The ”-G” suffix indicates that the products are Halogen and Antimony free as well as being fully EU RoHS compliant.
7 L1
8 L2
VO UT 6
Lx 5
GN D 4
1 VBA T
2 GN D
3 CE
(BOTTOM VIEW)

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XCL102/XCL103 Series
■ABSOLUTE MAXIMUM RATINGS
Ta=25℃
PARAMETER SYMBOL RATINGS UNITS
VBAT Pin Voltage VBAT -0.3～+7.0 V
Lx Pin Voltage VLx -0.3～+7.0 V
V
OUT
Pin Voltage
V
OUT
-0.3
～
+7.0
V
CE Pin Voltage
V
CE
-0.3
～
+7.0
V
Power Dissipation Pd 1000 (40mm x 40mm Standard board)(*3) mW
Operating Ambient Temperature Topr -40～+85 ℃
Storage Temperature Tstg -55～+125 ℃
*GND are standard voltage for all of the voltage.
(*3) The power dissipation figure shown is PCB mounted and is for reference only.
The mounting condition is please refer to PACKAGING INFORMATION.

5/20
XCL102/XCL103
Series
■ELECTRICAL CHARACTERISTICS
●XCL102/XCL103 Series Ta=25℃
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT
Input Voltage VIN - - 6.0 V ①
Output Voltage VOUT Voltage to start oscillation while
VOUT=VOUT(T)
×
1.03
→
VOUT(T)
×
0.97
<E-1> <E-2> <E-3> V ⑤
Operation Start Voltage VST1 RL=1kΩ- - 0.90 V ①
Operation Hold Voltage VHLD RL=1kΩ- 0.65 - V ①
Quiescent Current
(XCL103 only) Iq VOUT=VBAT= VOUT(T)+0.5V - 26 40 μA ③
Supply Current
I
DD
V
OUT
=V
BAT
= V
OUT(T)
-0.2V
-
<E-5>
3.0
mA
③
Oscillation Frequency
fOSC
VBAT= VOUT(T)
×
0.5, IOUT=100mA
2.4
3.0
3.6
MHz
①
Maximum Duty Cycle DMAX VBAT=1.2V, VOUT= VOUT(T)-0.2V 88 93 98 % ⑤
Minimum Duty Cycle
D
MIN
V
OUT
=V
BAT
= V
OUT(T)
+0.5V
-
-
0
%
⑤
PFM Switching Current
(XCL103 only) IPFM VBAT=1.5V, RLis selected with VOUT(T), Refer to Table 1 - 165 230 mA ①
Efficiency
（XCL103 only）EFFI
V
BAT
= V
OUT(T)×
0.6, R
L
is selected with
VOUT(T), Refer to Table 1 - 86(*3) - % ①
Efficiency
EFFI
V
BAT
= V
OUT(T)×
0.6,
I
OUT
= 100mA
-
90(*3)
-
%
①
Stand-by Current
ISTB
VBAT=VLx=6.0V,VCE=0V,
(*1)
-
0
1.0
μA
⑦
Lx SW "Pch" ON
Resistance RLXP VBAT=VLx= 6.0V, IOUT=200mA - 0.3(*2) - Ω④
Lx SW "Nch" ON
Resistance RLXN - 0.3(*3) - Ω①
Lx SW”H” Leakage
Current ILXLH VBAT=6.0,VCE=0V, VLx=6.0V,VOUT=0V - 0 1.0 μA ⑦
Current Limit ILIM VBAT= VOUT(T)-0.2V, RLx=1Ω<E-6> <E-7> <E-8> A ⑥
Integral Latch Time tLAT VBAT= VOUT(T)-0.2V, RLx=1Ω,Time from
current limit start to stop Lx oscillation 25 100 365 μs ⑥
Latch Release Voltage VLAT_R RLis selected with VOUT(T), Refer to Table 1 0.9 1.2 1.5 V ①
Short Protection
Threshold Voltage VSHORT VBAT=VOUT(T)-0.2V, RL=1Ω- (*3) - V ①
Soft-Start Time tSS VBAT= VOUT(T)×0.6, VOUT=VOUT(T)× 0.9, After "H" is fed to CE, the time by when
clocks are generated at Lx pin. 0.2 0.5 1.0 ms ⑤
C
L
Discharge Resistance
(Type D only) RDCHG VBAT=3.3V, VOUT=3.3V, VCE=0V 100 180 400 Ω②
Bypass SW
Resistance (Type E only) RBSW VBAT= 3.3V, VOUT=0V, VCE=0V 100 180 400 Ω②
CE "H" Voltage VCEH VOUT= VOUT(T)-0.15V, Applied voltage to VCE,
Voltage changes Lx to be generated.
0.8 - 6.0 V ⑤
CE "L" Voltage VCEL VOUT= VOUT(T)-0.15V, Applied voltage to VCE,
Voltage changes Lx to“H” level
GND - 0.2 V ⑤
CE "H" Current ICEH VBAT=6.0V,VOUT=6.0V, VLx=6.0V VCE=6.0V, -0.1 - 0.1 μA ②
CE "L" Current ICEL VBAT=6.0V,VOUT=6.0V, VLx=6.0V ,VCE=0V -0.1 - 0.1 μA ②
Inductance
L
Test Freq.=1MHz
-
1.5
-
μH
-
Inductor Rated Current ICEL ΔT=+40deg - 1000 - mA -
VOUT(T):Target Voltage
Test Conditions: unless otherwise stated、VBAT=1.5V, VCE=3.3V, Lx:OPEN, RLx=56Ω
(*1) XCL102D/XCL103D: VOUT=0V, XCL102E/XCL103E: VOUT=OPEN
(*2) Design value for the XCL103D
(*3) Designed value