Preliminary Datasheet

LP28055

LP28055 – 02

Oct.-2018

www.lowpowersemi.com

Page 2 of 7

Functional Pin Description

Package Type

Pin Configurations

E S O P 8

4

3

2

1

5

6

7

8

STAT2

VIN

NTC

GND

BAT

STAT1

NC

ISET

GND

9

ESOP8

TOP VIEW

Pin Description

PIN

No.

PIN

NAME

DESCRIPTION

1

NTC

Negative Thermal Coefficient (NTC) Thermistor Pin.

2

ISET

Charge Current Program.The charge current is programmed by connecting a 1% resistor(R

3

GND

GND is the connection to system ground.

4

VIN

VIN is the input power source. Connect to a wall adapter.

5

BAT

BAT is the connection to the battery. Typically a 10µF Tantalum capacitor is needed for stability when there is

no battery attached. When a battery is attached, only a 1uF ceramic capacitor is required.

6

STAT2

Open-Drain Charge Status Output. When the battery is charging, the STAT 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 STAT pin is pulled low by an internal

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

8

NC

No Connector.