Pin Descriptions

Pin Configuration

QFN44-16

STDFN33-14

(Top View)

(Top View)

D4

EN/SET

C1+

1

C1-

OUTCP

C2+

D3

D1

GND

IN

GND

C2-

3

4

5

6

7

14

D2

13

12

11

10

9

8

1

2

3

4

12

11

10

9

N/C

EN/SET

N/C

OUTCP

GND

IN

GND

D1

Pin #

AAT3167ISN

AAT3167IFO

Symbol

Function

1, 3

n/a

N/C

No connection.

2

3

EN/SET

4

6

OUTCP

Charge pump output to drive load circuit. Requires 1µF ceramic capacitor

connected between this pin and ground.

5

7

C2+

Flying capacitor 2 positive terminal. Connect a 1µF ceramic capacitor

between C2+ and C2-.

6

4

C1+

Flying capacitor 1 positive terminal. Connect a 1µF ceramic capacitor

between C1+ and C1-.

7

5

C1-

Flying capacitor 1 negative terminal.

8

8

C2-

Flying capacitor 2 negative terminal.

9, 11

9, 11

GND

Ground.

10

10

IN

Input power supply. Requires 1µF ceramic capacitor connected between

this pin and ground.

12

12

D1

Current sink input #1.

13

13

D2

Current sink input #2.

14

14

D3

Current sink input #3.

15

1

D4

Current sink input #4.

16

2

D5

Current sink input #5.

EP

EP

Exposed paddle (bottom); connect to ground as closely as possible to the

package.

AAT3167

High Efficiency 1X/1.5X/2X Charge

Pump for White LED Applications

2

3167.2007.03.1.4