AAT3194 Datasheet, PDF (2/14 Pages) Advanced Analogic Technologies – High Efficiency 1.5X Fractional Charge Pump For White LED Applications

AAT3194
High Efficiency 1.5X Fractional Charge
Pump For White LED Applications
Pin Descriptions
Pin #
1
Symbol
C2+
2
OUT
3
C1-
4
C1+
5
D4
6
D3
7
D2
8
D1
9
EN/SET
10
IN
11
GND
12
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 S²Cwire 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+ ¹
OUT ²
C1- ³
C1+ ⁴
D4 ⁵
D3 ⁶
12 _C2-
11 _GND
10 _IN
9 _EN/SET
8 _D1
7 _D2
2
3194.2006.09.1.0