AAT3158
High Efficiency 1X/1.5X/2X Charge Pump
for White LED Applications
Pin Descriptions
Pin #
Symbol
Function
1
2
3
4
5
D4
EN/SET
C1+
Current sink input #4.
S2Cwire serial interface control pin.
Flying capacitor 1 positive terminal. Connect a 1µF capacitor between C1+ and C1-.
Flying capacitor 1 negative terminal.
C1-
VOUT
Charge pump output to drive load circuit. Requires 1µF capacitor connected between
this pin and ground.
6
7
C2+
C2-
VIN
GND
D3
Flying capacitor 2 positive terminal. Connect a 1µF capacitor between C2+ and C2-.
Flying capacitor 2 negative terminal.
8
Input power supply. Requires 1µF capacitor connected between this pin and ground.
Ground.
9
10
11
12
Current sink input #3.
D2
Current sink input #2.
D1
Current sink input #1.
Pin Configuration
TSOPJW-12
(Top View)
1
2
3
4
5
6
12
11
10
9
D4
EN/SET
C1+
C1-
VOUT
C2+
D1
D2
D3
GND
VIN
C2-
8
7
2
3158.2006.02.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
