High Efficiency 1X/1.5X/2X Charge Pump
for RGB Color LED Applications
Pin Descriptions
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
AAT3129
Symbol
C2+
CP
C1-
C1+
ISRC
EN/SET
DB
DG
DR
GND
IN
C2-
Function
Flying capacitor 2 positive terminal. Connect a 1μF capacitor between C2+ and C2-.
Charge pump output. Requires 1μF capacitor connected between this pin and
ground.
Flying capacitor 1 negative terminal.
Flying capacitor 1 positive terminal. Connect a 1μF capacitor between C1+ and C1-.
Current source output.
AS
2
Cwire control pin.
Open drain switch blue diode cathode.
Open drain switch green diode cathode.
Open drain switch red diode cathode.
Ground.
Input power supply. Requires 1μF capacitor connected between this pin and ground.
Flying capacitor 2 negative terminal.
Pin Configuration
TSOPJW-12
(Top View)
C2+
CP
C1-
C1+
ISRC
EN/SET
1
2
3
4
5
6
12
11
10
9
8
7
C2-
IN
GND
DR
DG
DB
2
3129.2007.01.1.4
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
