CPC405X Datasheet
Jun 2017 V0.3
Li-Ion Linear Battery Charger with LDOs
Features
Charges single-cell Li-Ion batteries with
CC/CV algorithm and charge termination
charge current from 10mAto 600
mAadjustable by external resistor
Auto-recharge function
Charging timeout
Charge status output
Linear charger with OVP,OCP and OTP
3.3V always-on 2uA I
Q
LDO
Enable pulse configuration LDO output
voltage
ESD HBM ±?kV
Package
- TSOT23-6L
- DFN1.5*1.58L
- DFN2*28L
- QFN2*212L
CDM ±?kV
The CPC4050/1/2 reduces the channel of LDO
and enable pins on the basis of the CPC4053.
The CPC405X uses a CC/CV algorithm to charge
the battery.The constant charging current can
beprogrammed using external resistor. The
charger is automatically powered off when the
VBUS pin is not connected to a valid power
source.
The CPC405X provides a minimum of 2.25 square
millimeters of package, to achieve a multi-channel
power control and charging.
Device List
Device
CPC4050
CPC4051
CPC4052
CPC4053
Enable Signal
None
EN1
ENLP,EN1
ENLP,EN1,EN2
LDOs
1
2
2
3
management, embedding a linear battery charger,
a low power LDO, 2 LDOs with configurable output
voltage.Each LDO has an independent enable pin.
Applications
Wristbands
Smart watches and wearable devices
Fitness and medical accessories
Li-Ion battery rechargeable equipment
Bluetooth beacon
Ant+ device
Device Information
Part Number
CPC4050ST
CPC4051DN
CPC4052DN
CPC4053QN
Package
TSOT23-6L
DFN1.5*1.5 8L
DFN 2*28L
QFN 2*2 12L
Size
2.9mm*1.6mm
*1.1mm(H)
1.5mm*1.5mm
*0.45mm(H)
2.0mm*2.0mm
*0.75mm(H)
2.0mm*2.0mm
*0.75mm(H)
Typical Application
Description
The CPC4053 is a highly integrated power
Copyright© 2017 by Chiphomer Technology Limited
Page 1 of 16
CPC405X Datasheet
Jun 2017 V0.3
Pin Configuration
STA
1
6
ISET
GND
2
5
LDO_LP
BAT
3
4
VBUS
Figure 1 CPC4050TSOT23-6L Pin Assignment（Top View）
Figure 2 CPC4051 DFN1.5*1.5 8L Pin Assignment（Top View）
Figure 3 CPC4052 DFN2*2 8L Pin Assignment（Top View）
Figure 4 CPC4053 QFN 2*2 12L Pin Assignment（Top View）
Copyright© 2017 by Chiphomer Technology Limited
Page 2 of 16
CPC405X Datasheet
Jun 2017 V0.3
Pin Description
CPC4050
Name
ISET
GND
LDO_LP
BAT
VBUS
STA
I/O
I
G
O
P
P
O
Description
Charge Current Program
Ground
3.3V output
Li-ion battery
Power
Open-Drain Charge Status Output, pull down when charging
CPC4051
Name
ISET
EN1
GND
LDO_LP
LDO1
BAT
VBUS
STA
I/O
I
I
G
O
O
P
P
O
Description
Charge Current Program
Configuration pin of LDO1
Ground
3.3V output
0.9~3.3V output
Li-ion battery
Power
Open-Drain Charge Status Output, pull down when charging
CPC4052
Name
ISET
ENLP
EN1
GND
LDO_LP
LDO1
BAT
VBUS
STA
I/O
I
I
I
G
O
O
P
P
O
Description
Charge Current Program
Enable pin of LDO_LP
Configuration pin of LDO1
Ground
3.3V output
0.9~3.3V output
Li-ion battery
Power
Open-Drain Charge Status Output, pull down when charging
Copyright© 2017 by Chiphomer Technology Limited
Page 3 of 16
CPC405X Datasheet
Jun 2017 V0.3
CPC4053
Name
ISET
ENLP
EN1
EN2
GND
LDO_LP
LDO1
LDO2
BAT
VBUS
STA
I/O
I
I
I
I
G
O
O
O
P
P
O
Description
Charge Current Program
Enable pin of LDO_LP
Configuration pin of LDO1
Configuration pin of LDO2
Ground
3.3V output
0.9~3.3V output
0.9~3.3V output
Li-ion battery
Power
Open-Drain Charge Status Output, pull down when charging
Copyright© 2017 by Chiphomer Technology Limited
Page 4 of 16
CPC405X Datasheet
Jun 2017 V0.3
Typical Applications
USB
Power
Input
Charge
Status
Output
uPROCESSOR
VBUS
BAT
Li-Ion
Battery
STA
LDO_LP
CPC4050
ISET
GND
Figure 5
CPC4050 application
Figure 6
CPC4051 application
USB
Power
Input
GPIO of
uPROCESSOR
BAT
ENLP VBUS
BAT
Li-Ion
Battery
STA
LDO_LP
Charge
Status
Output
uPROCESSOR
CPC4052
EN1
LDO1
GND
Power
for
Sensors
Pulse from
uPROCESSOR
ISET
Figure 7 CPC4052 application
Copyright© 2017 by Chiphomer Technology Limited
Page 5 of 16
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