High Efficiency 1X/1.5X/2X Charge Pump with
PWM Control for White LED Applications
Pin Descriptions
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
AAT3143
Symbol
C2+
CP
C1-
C1+
D3
D2
D4
D1
EN/PWM
IN
GND
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 #3.
Current source output #2.
Current source output #4.
Current source output #1.
Enable/PWM control pin.
Input power supply. Requires 1µF capacitor connected between this pin and ground.
Ground.
Flying capacitor 2 negative terminal.
Pin Configuration
TSOPJW-12
(Top View)
C2+
CP
C1-
C1+
D3
D2
1
2
3
4
5
6
12
11
10
9
8
7
C2-
GND
IN
EN/PWM
D1
D4
2
3143.2006.05.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
