Pin Descriptions

Pin Configuration

TSOPJW-12

(Top View)

1

2

3

4

5

6

12

11

10

9

8

7

C2+

CP

C1-

C1+

ISRC

EN/SET

C2-

IN

GND

DR

DG

DB

Pin # Symbol

Function

1

C2+

Flying capacitor 2 positive terminal. Connect a 1μF capacitor between C2+ and C2-.

2

CP

Charge pump output. Requires 1μF capacitor connected between this pin and

ground.

3

C1-

Flying capacitor 1 negative terminal.

4

C1+

Flying capacitor 1 positive terminal. Connect a 1μF capacitor between C1+ and C1-.

5

ISRC

Current source output.

6

EN/SET

7

DB

Open drain switch blue diode cathode.

8

DG

Open drain switch green diode cathode.

9

DR

Open drain switch red diode cathode.

10

GND

Ground.

11

IN

Input power supply. Requires 1μF capacitor connected between this pin and ground.

12

C2-

Flying capacitor 2 negative terminal.

AAT3129

High Efficiency 1X/1.5X/2X Charge Pump

for RGB Color LED Applications

2

3129.2007.01.1.4