PRODUCT DATASHEET
AAT3194
ChargePump
TM
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
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. If not used, leave pin
fl
oating.
Current source output 3. If not used, leave pin
fl
oating.
Current source output 2. If not used, leave pin
fl
oating.
Current source output 1. Required reference current source. Do not leave pin
fl
oating.
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
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3194.2008.05.1.1
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