AL3158

HIGH EFFICIENCY 1x/2x CHARGE PUMP

FOR WHITE LED APPLICATIONS

AL3158

Document number: DS35047 Rev. 2 - 2

2 of 10

www.diodes.com

January 2011

© Diodes Incorporated

Pin Descriptions

Pin Name

Pin Number

Description

D8

1

Current sink input #8. Connected to VOUT when un-used.

D9

2

Current sink input #9. Connected to VOUT when un-used.

EN1

3

Enable Pin 1

EN3

4

Enable Pin 3

EN2

5

Enable Pin 2

PGND

6

Charge Pump Switch Ground

CN

7

Negative Terminal of Flying Capacitor

VIN

8

Input Power Supply. Requires 2.2µF capacitor between this pin and ground.

CP

9

Positive Terminal of Flying Capacitor

NC

10,19

No-Connect

11

Charge pump output to drive load circuit. Requires 2.2µF capacitor between this pin

and ground.

D1

12

D2

13

D3

14

D4

15

D5

16

D6

18

GND

17

Ground

D7

20

GND

EP PAD

Exposed Pad (bottom). Connected to GND directly underneath the package.

Functional Block Diagram