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AL3159
HIGH EFFICIENCY 1x/2x CHARGE PUMP
FOR WHITE LED APPLICATIONS
Pin Descriptions
Pin Name
D8
D9
CTL1
CTL3
CTL2
PGND
CN
V IN
CP
NC
V OUT
D1
D2
D3
D4
D5
GND
D6
D7
GND
Pin Number
1
2
3
4
5
6
7
8
9
10,19
11
12
13
14
15
16
17
18
20
EP PAD
Description
Current sink input #8. Connected to V OUT when un-used.
Current sink input #9. Connected to V OUT when un-used.
Control Pin 1
Control Pin 3
Control Pin 2
Charge Pump Switch Ground
Negative Terminal of Flying Capacitor
Input Power Supply. Requires 2.2μF capacitor between this pin and ground.
Positive Terminal of Flying Capacitor
No-Connect
Charge pump output to drive load circuit. Requires 2.2μF capacitor between this pin
and ground.
Current sink input #1. Connected to V OUT when un-used.
Current sink input #2. Connected to V OUT when un-used.
Current sink input #3. Connected to V OUT when un-used.
Current sink input #4. Connected to V OUT when un-used.
Current sink input #5. Connected to V OUT when un-used.
Ground
Current sink input #6. Connected to V OUT when un-used.
Current sink input #7. Connected to V OUT when un-used.
Exposed Pad (bottom). Connected to GND directly underneath the package.
Functional Block Diagram
AL3159
Document number: DS35048 Rev. 2 - 2
2 of 10
www.diodes.com
January 2011
? Diodes Incorporated
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