LP28303A-00

Apr.-2017

www.lowpowersemi.com

Page 2 of 8

Preliminary Datasheet

LP28303A

Functional Pin Description

Package Type

ESOP8

TDFN-10

Pin

Configurations

1

2

3

4

8

7

6

5

CHRG

FULL

NTC

VBAT

VIN

AGND

SW

CS

PGND

9(PAD)

ESOP-8

(Top View)

1

2

3

4

10

9

8

7

AGND

PGND

VIN

CHRG

SW

SW

CS

BAT

TDFN-10

TOP VIEW

5

6

FULL

NTC

PGND

Pin Description

Pin No.

Name

Description

ESOP8 TDFN-10

1

4

CHRG

Open-Drain charge status output. When the battery is charging, this pin is pulled low

by an internal N-channel MOSFET.

2

5

FULL

Open-Drain charge status output. When charging is complete, this pin is pulled low

by an internal N-channel MOSFET.

3

6

NTC

Negative Temperature Coefficient Thermistor Input. This pin senses the

temperature of the battery pack and stops the charger when the temperature is out

of range. Connect to GND for disabling this function.

4

7

VBAT Battery pin.

5

8

CS

Current Sense pin.

6

9/10

SW

Switch pin. Connect to external inductor.

7

1

AGND Analog (signal) Ground

8

3

VIN

Positive Supply Voltage Input. Decouple with a 10µF or larger surface mounted

ceramic capacitor.

9(PAD)

2

PGND Power Ground.