AAT3131 Datasheet, PDF (2/14 Pages) Advanced Analogic Technologies – High Efficiency 1X/1.5X Fractional Charge Pump for White LED Applications

AAT3131
High Efficiency 1X/1.5X Fractional
Charge Pump for White LED Applications
Pin Descriptions
Pin #
1
Symbol
C2+
2
OUT
3
C1-
4
C1+
5
D3
6
D2
7
D4
8
D1
9
EN/SET
10
IN
11
GND
12
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.
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+ ¹
OUT ²
C1- ³
C1+ ⁴
D3 ⁵
D2 ⁶
12 _C2-
11 _GND
10 _IN
9 _EN/SET
8 _D1
7 _D4
2
3131.2005.12.1.2