AAT3169
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
Pin Descriptions
Pin #
AAT3169ISN AAT3169IFP
1
2
2
3
3
n/a
4
6
Symbol
D6
EN/SET
N/C
OUTCP
5
7
C2+
6
4
C1+
7
5
C1-
8
8
C2-
9, 11
10
GND
10
9
IN
12
11
D1
13
12
D2
14
13
D3
15
14
D4
16
1
D5
EP
n/a
Function
Current sink input #6.
AS2Cwire serial interface control pin.
No connection.
Charge pump output to drive load circuit. Requires 1µF capacitor con-
nected between this pin and ground.
Flying capacitor 2 positive terminal. Connect a 1µF capacitor between
C2+ and C2-.
Flying capacitor 1 positive terminal. Connect a 1µF capacitor between
C1+ and C1-.
Flying capacitor 1 negative terminal.
Flying capacitor 2 negative terminal.
Ground.
Input power supply. Requires 1µF capacitor connected between this pin
and ground.
Current sink input #1.
Current sink input #2.
Current sink input #3.
Current sink input #4.
Current sink input #5.
Exposed paddle (bottom); connect to ground as closely as possible to
the package.
Pin Configuration
QFN44-16
(Top View)
D6 1
EN/SET 2
N/C 3
OUTCP 4
12 D1
11 GND
10 IN
9 GND
STDFN33-14
(Top View)
D5 1
D6 2
EN/SET 3
C1+ 4
C1- 5
OUTCP 6
C2+ 7
14 D4
13 D3
12 D2
11 D1
10 GND
9 IN
8 C2-
2
3169.2006.08.1.2