2

AAT3783

DATA SHEET

1-A Linear Li-Ion/Polymer Battery Charger with 28V Over-Voltage Protection

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

201903B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 27, 2012

Pin Descriptions

Pin Number

Name

Type

Function

1

INCHR

I/O

Internal connection between the output of the OVP stage and the input of the battery

charger. Decouple with 2.2μF capacitor.

2BATS

I

Battery sense pin. Connect directly to the battery's + terminal. If not used, BATS

must be connected to BAT.

3

BAT

O

Connect to Lithium-Ion battery.

4

TS

I/O

Battery temperature sense pin.

5

ENOVP

I

Active low enable for OVP stage.

6

OVP

I

Over-voltage protection threshold pin. Leave open for the default 6.5V setting; con-

nect to a resistor to adjust the OVP setting (see Application Information).

7

FLT

O

Over-voltage fault flag, open drain.

8

STAT

O

Charge status pin, open drain.

9

ADPP

O

Input power-good (USB port/adapter present indicator) pin, open-drain.

10

CT

I

Charge timer programming input pin (no timer if grounded).

11

ENCHR

I

Active high enable pin (with internal pull-down) for charging circuitry.

12

TERM

I

Charge termination current programming input pin (internal default 10% termina-

tion current if TERM is open).

13

GND

I/O

Connect to power ground.

14

ISET

I

Charge current programming input pin.

15, 16

IN

I

Input from USB port/ adapter connector.

Pin Configuration

TDFN34-16

(Top View)

BAT

TS

ENOVP

INCHR

BATS

3

OVP

FLT

STAT

ISET

GND

TERM

IN

IN

ENCHR

CT

ADPP

4

5

1

EP1

EP2

2

6

7

8

14

13

12

16

15

11

10

9