PRODUCT DATASHEET
AAT3169
SwitchReg
TM
High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications
Pin Descriptions
Pin #
AAT3169ISN
1
2
3
4
5
6
7
8
9, 11
10
12
13
14
15
16
EP
AAT3169IFP
2
3
n/a
6
7
4
5
8
10
9
11
12
13
14
1
n/a
Symbol
D6
EN/SET
N/C
OUTCP
C2+
C1+
C1-
C2-
GND
IN
D1
D2
D3
D4
D5
Function
Current sink input #6.
AS
2
Cwire serial interface control pin.
No connection.
Charge pump output to drive load circuit. Requires 1µF capacitor connected 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)
STDFN33-14
(Top View)
D2
D3
14
13
D5
16
D4
15
D6
EN/SET
N/C
OUTCP
1
2
3
4
5
6
7
8
12
11
10
9
D1
GND
IN
GND
D5
D6
EN/SET
C1+
C1-
OUTCP
C2+
1
2
3
4
5
6
7
14
13
12
11
10
9
8
D4
D3
D2
D1
GND
IN
C2-
C1+
C2+
C2-
C1-
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3169.2008.03.1.3
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