AAT3134
High Efficiency 1X/1.5X Fractional
Charge Pump for White LED Applications
Pin Descriptions
Pin #
Symbol
Function
1
2
D2
D5
Current source output #2.
Current source output #5.
3
D6
Current source output #6.
4
D3
Current source output #3.
5
D4
Current source output #4.
6
C1+
C1-
N/C
OUT
C2+
C2-
GND
IN
Flying capacitor 1 positive terminal. Connect a 1µF capacitor between C1+ and C1-.
Flying capacitor 1 negative terminal.
7
8,13
9
No connection.
Charge pump output. Requires 1µF capacitor connected between this pin and ground.
Flying capacitor 2 positive terminal. Connect a 1µF capacitor between C2+ and C2-.
Flying capacitor 2 negative terminal.
10
11
12
14
15
16
EP
Ground.
Input power supply. Requires 1µF capacitor connected between this pin and ground.
Control pin.
EN/SET
D1
Current source output #1.
Exposed paddle (bottom); connect to GND directly beneath package.
Pin Configuration
QFN44-16
(Top View)
1
2
3
4
12
11
10
9
D2
D5
D6
D3
GND
C2-
C2+
OUT
2
3134.2005.12.1.1
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