LP4054H-00

Aug.-2018

www.lowpowersemi.com

Page 2 of 8

Preliminary Datasheet

LP4054H

Functional Pin Description

Package Type

SOT23-5

SOT23-6

Pin

Configurations

VIN

GND

STAT1

BAT

ISET

1

2

3

4

5

Top View

VIN

GND

STAT1

BAT

ISET

1

2

3

4

6

Top View

5

STAT2

Pin

Name

Description

SOT23-5 SOT23-6

1

1

STAT1

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

is pulled low by an internal N-channel MOSFET. When the charge cycle is

completed, the pin is pulled High.

2

2

GND

Ground.

3

3

BAT

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

the final float voltage to 4.2V.

4

4

VIN

Positive Input Supply Voltage.

5

STAT2

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

is pulled High by an internal N-channel MOSFET. When the charge cycle is

completed, the pin is pulled Low.

5

6

ISET

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

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: