LP4056-02

Aug.-2017

Email: marketing@lowpowersemi.com

www.lowpowersemi.com

Page 2 of 7

Preliminary Datasheet

LP4056

Functional Pin Description

Package Type

Pin Configurations

ESOP8

4

3

2

1

5

6

7

8

STAT2

VIN

NC

GND

BAT

STAT1

NC

ISET

GND

9

Pin

Name

Description

1、8

NC

No Connector.

2

ISET

Charge Current Program and Charge Current Monitor Pin. The charge current is

programmed by connecting a 1% resistor, RISET, to ground. When charging in

constant-current mode, this pin servos to 1V. In all modes, the voltage on this pin can be

used to measure the charge current using the following formula: IBAT=1000/RISET

3、9

GND

Ground.

4

VIN

Positive Input Supply Voltage.

5

BAT

Charge Current Output. Provides charge current to the battery and regulates the final float

voltage to 4.2V. An internal precision resistor divider from this pin sets the float voltage.

6

STAT2

Open-Drain Charge Status Output. When the battery is charging, the STAT2 pin could be

pulled High by an external pull high resistor. When the charge cycle is completed, the pin is

pulled Low by an internal N-channel MOSFET.

7

STAT1

Open-Drain Charge Status Output. When the battery is charging, the STAT1 pin is pulled

low by an internal N-channel MOSFET. When the charge cycle is completed, the pin could

be pulled High by an external pull high resistor.