AAT3172 View Datasheet(PDF) - Advanced Analogic Technologies
Part Name
Description
MFG CO.
'AAT3172' PDF : 15 Pages View PDF
ChargePumpTM
PRODUCT DATASHEET
AAT3172
High Current LED Flash Driver Charge Pump IC
Pin Descriptions
Pin #
1, 12
2
3
4
5
6
7
8
9
10
11
EP
Symbol
VIN
C1+
C1-
GND
F1
F2
EN/SET
N/C
C2-
C2+
VOUT
Function
Input power supply pin. Requires 4.7µF bypass capacitor to ground.
Flying capacitor C1 positive terminal. Connect a 1.0µF capacitor between C1+ and C1-.
Flying capacitor C1 negative terminal.
Ground connection.
Current sink input #1.
Current sink input #2.
AS2Cwire serial interface control pin.
No connection.
Flying capacitor C2 negative terminal.
Flying capacitor C2 positive terminal. Connect a 1µF capacitor between C2+ and C2-.
Charge pump output. Requires 2.2µF capacitor connected between this pin and ground.
Exposed paddle (bottom); connect to GND directly beneath package.
Pin Configuration
TDFN33-12
(Top View)
VIN 1
C1+ 2
C1- 3
GND 4
F1 5
F2 6
12 VIN
11 VOUT
10 C2+
9 C2-
8 N/C
7 EN/SET
2
www.analogictech.com
3172.2008.04.1.6
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