AP133

300mA, LOW QUIESCENT CURRENT, FAST TRANSIENT

LOW DROPOUT LINEAR REGULATOR

AP133 Rev. 2

2 of 14

MAY 2007

www.diodes.com

Pin Assignment

SOT25

IN

EN

ADJ

OUT

(Top View)

5

4

3

2

1

GND

GND

OUT

DFN2020-6 (Preview)

(Top View)

4

ADJ

IN

EN

NC

6

5

3

2

1

Pin Descriptions

Pin Number

Name

SOT25

DFN2020-6

Description

IN

1

3

Voltage input pin. Bypass to ground through at least 0.1µF capacitor

GND

2

2

Ground

EN

3

1

Enable input, active high

ADJ

4

6

Output feedback pin

NC

5

No connection

OUT

5

4

Voltage output pin. Bypass to ground through 1µF ceramic capacitor

Functional Block Diagram

IN

EN

GND

FB

OUT

Gate

Driver

0.8V

Current Limit

and Thermal

Shutdown