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AP3156
HIGH EFFICIENCY 1X/1.5X/2X CHARGE PUMP
FOR WHITE LED APPLICATIONS
Pin Descriptions
Pin Name
Pin
Number
Description
D6
SDI
NC
1 Current Sink Input #6. Connected to V OUT when un-used.
2 Serial Digital Interface Control Pin
3 No Connection
V OUT
C2 P
C1 P
4
5
6
Charge pump output to drive load circuit. Requires 1μF capacitor connected between
this pin and ground
Positive Terminal of Flying Capacitor 2. Connects a 1μF capacitor between C2 P and
C2 N .
Positive terminal of Flying Capacitor 1. Connects a 1μF capacitor between C1 P and
C1 N .
C1 N
C2 N
GND
V IN
D1
D2
D3
D4
D5
GND
7 Negative Terminal of Flying Capacitor 1
8 Negative Terminal of Flying Capacitor 2
9, 11 Ground.
10 Input Power Supply. Requires 1μF capacitor between this pin and ground.
12 Current sink input #1. Connected to V OUT when un-used.
13 Current sink input #2. Connected to V OUT when un-used.
14 Current sink input #3. Connected to V OUT when un-used.
15 Current sink input #4. Connected to V OUT when un-used.
16 Current sink input #5. Connected to V OUT when un-used.
EP PAD Exposed Pad (bottom). Connected to GND directly underneath the package.
Functional Block Diagram
AP3156 Rev. 1
3 of 15
www.diodes.com
SEPTEMBER 2009
? Diodes Incorporated
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