High Efficiency 1.5X Fractional Charge
Pump For White LED Applications
Pin Descriptions
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
AAT3194
Symbol
C2+
OUT
C1-
C1+
D4
D3
D2
D1
EN/SET
IN
GND
C2-
Function
Flying capacitor 2 positive terminal. Connect a 1µF ceramic capacitor between C2+
and C2-.
Charge pump output. Requires 1µF bypass capacitor to ground.
Flying capacitor 1 negative terminal.
Flying capacitor 1 positive terminal. Connect a 1µF ceramic capacitor between C1+
and C1-.
Current source output 4.
Current source output 3.
Current source output 2.
Current source output 1. Required reference current source. Do not leave pin floating.
Control pin using S
2
Cwire serial interface.
Input power supply. Requires 1µF or larger ceramic capacitor to ground.
Ground.
Flying capacitor 2 negative terminal.
Pin Configuration
TSOPJW-12
(Top View)
C2+
OUT
C1-
C1+
D4
D3
1
2
3
4
5
6
12
11
10
9
8
7
C2-
GND
IN
EN/SET
D1
D2
2
3194.2006.09.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
