AAT3151
High Efficiency 1X/1.5X/2X Charge Pump
For White LED Applications
Pin Descriptions
Pin #
Symbol
D4
Function
1
2
3
4
5
Current sink input #4.
EN/SET
C1+
AS2Cwire serial interface control pin.
Flying capacitor 1 + terminal. Connect a 1µF capacitor between C1+ and C1-.
Flying capacitor 1 - terminal.
C1-
VOUT
Charge pump output to drive load circuit. Requires 1µF capacitor connected
between this pin and ground.
6
7
8
C2+
C2-
IN
Flying capacitor 2 + terminal. Connect a 1µF capacitor between C2+ and C2-.
Flying capacitor 2 - terminal.
Input power supply. Requires 1µF capacitor connected between this pin and
ground.
9
GND
D1
Ground.
10
11
12
EP
Current sink input #1.
D2
Current sink input #2.
D3
Current sink input #3.
Exposed paddle (bottom). Connect to ground.
Pin Configuration
DFN33-12
(Top View)
1
2
3
4
5
6
12
11
10
9
D4
EN/SET
C1+
C1-
VOUT
C2+
D3
D2
D1
GND
VIN
C2-
8
7
2
3151.2004.10.0.6
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