High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
Pin Descriptions
Pin #
AAT3167ISN
AAT3167IFO
AAT3167
Symbol
N/C
EN/SET
OUTCP
C2+
C1+
C1-
C2-
GND
IN
D1
D2
D3
D4
D5
Function
No connection.
AS
2
Cwire serial interface control pin.
Charge pump output to drive load circuit. Requires 1µF ceramic capacitor
connected between this pin and ground.
Flying capacitor 2 positive terminal. Connect a 1µF ceramic capacitor
between C2+ and C2-.
Flying capacitor 1 positive terminal. Connect a 1µF ceramic capacitor
between C1+ and C1-.
Flying capacitor 1 negative terminal.
Flying capacitor 2 negative terminal.
Ground.
Input power supply. Requires 1µF ceramic 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.
1, 3
2
4
5
6
7
8
9, 11
10
12
13
14
15
16
EP
n/a
3
6
7
4
5
8
9, 11
10
12
13
14
1
2
EP
Pin Configuration
QFN44-16
(Top View)
D2
D3
14
13
STDFN33-14
(Top View)
D5
16
D4
15
N/C
EN/SET
N/C
OUTCP
1
2
3
4
5
6
7
8
12
11
10
9
D1
GND
IN
GND
D4
D5
EN/SET
C1+
C1-
OUTCP
C2+
1
2
3
4
5
6
7
14
13
12
11
10
9
8
D3
D2
D1
GND
IN
GND
C2-
C1+
C2+
C2-
C1-
2
3167.2007.03.1.4
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
