AL8812

Document number: DS37099 Rev. 1 - 2

2 of 11

www.diodes.com

March 2014

© Diodes Incorporated

AL8812

Pin Descriptions

Pin

Name

Pin

Number

(U-DFN6040-12)

Function

NC

1

No Connection

GATE

2

Gate connection of internal MOSFET.

INPUT

3

Feedback pin for inverting input of internal comparator

VCC

4

Supply voltage pin

SENSE

5

No Connection.

DRIVE

6

Current drive collector:

SW/C

7

Internal switch transistor collector

SW/E

8

Internal switch transistor emitter

GND

9

Ground Connection

TIMING

10

Timing Capacitor to control the switching frequency.

SOURCE

11

Source connecton of internal MOSFET

DRAIN

12

Drain connection of internal MOSFET

Exposed PAD1

Exposed Pad of MOSFET Drain

Exposed PAD2

Exposed Pad of AL8812 and connect to PCB ground

Functional Diagram

1.25V

Reference

Regulator

Ipk

Oscillator

CT

R

S Q

Q2

Q1

100

Comparator

+

_

GND

TIMING

SW/E

SW/C

DRIVE

SENSE

VCC

INPUT

 

GATE

DRAIN

SOURCE

2

3

4

5

6

7

8

9

10

12

11