PRODUCT DATASHEET
AAT3151B
TM
ChargePump
High Efficiency 1X/1.5X Charge Pump For White LED Applications
Pin Descriptions
Pin #
Symbol
Function
1
2
3
4
D4
EN/SET
C1+
Current sink input #4.
AS2Cwire serial interface control pin.
Flying capacitor 1 positive terminal. Connect a 1μF ceramic capacitor between C1+ and C1-.
Flying capacitor 1 negative terminal.
C1-
Charge pump output to drive load circuit. Requires a 1μF or larger ceramic capacitor connected between
this pin and ground.
5
VOUT
6
7
8
C2+
C2-
VIN
GND
D1
Flying capacitor 2 positive terminal. Connect a 1μF ceramic capacitor between C2+ and C2-.
Flying capacitor 2 negative terminal.
Input power supply. Requires a 1μF or larger ceramic capacitor connected between this pin and ground.
Ground.
Current sink input #1.
Current sink input #2.
Current sink input #3.
Exposed paddle (bottom). Connect to GND directly beneath package.
9
10
11
12
EP
D2
D3
Pin Configuration
TDFN33-12
(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
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2
3151B.2008.02.1.1
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
