AAT1275

Boost Converter with USB Power Switch

PRODUCT DATASHEET

2

1275.2008.04.1.7

www .analogictech.com

AAT1275

Boost Converter with USB Power Switch

PRODUCT DATASHEET

2

1275.2008.04.1.7

www .analogictech.com

Pin Descriptions

Pin

Symbol

Function

TSOPJW-12

TDFN34-16

1

1, 16

LIN

Switched power input. Connect an inductor between this pin and the SW pin.

2

3, 15

IN

Supply input. Connect to VCC for proper operation.

3

13, 14

PGND

Power ground.

4

11, 12

SW

Switch pin. Boost inductor is connected between SW and LIN.

5

10

OUT1

Boost converter output.

6

9

OUT2

Load switch output.

7

8

SET

Load switch current limit programming pin. Connect a set resistor between this pin

and ground.

8

7

FLT

Load switch over-current or over-temperature fault flag. Active low, open-drain out-

put. A 10kΩ external pull-up resistor is recommended.

9

6

FB

Boost converter voltage feedback pin.

10

5

GND

Ground.

11

4

VCC

Bias supply for the internal circuitry. Connect to IN for proper operation.

12

2

EN

Enable pin, active high.

EP

Exposed paddle (bottom); connect to ground directly beneath the package.

Pin Configuration

TSOPJW-12

TDFN34-16

(Top View)

(Top View)

1

2

3

4

5

6

12

11

10

9

8

7

LIN

IN

PGND

SW

OUT1

OUT2

EN

VCC

GND

FB

FLT

SET

IN

VCC

GND

LIN

EN

3

FB

FLT

SET

PGND

PGND

SW

LIN

IN

SW

OUT1

OUT2

4

5

1

2

6

7

8

14

13

12

16

15

11

10

9