AP1084

5A LOW DROPOUT POSITIVE ADJUSTABLE OR

FIXED-MODE REGULATOR

AP1084 Rev. 9

3 of 11

JANUARY 2010

DS31070

www.diodes.com

Pin Assignment

(1) TO252-3L

(2) TO263-3L

3

2

1

Adj (GND)

( Top View )

3

2

1

( Top View )

Adj (GND)

(3) TO220-3L

Adj (GND)

( Top View)

1

2

3

Pin Name

I/O

Pin #

Description

Adj (GND)

I

1

Adjustable (Ground only for fixed mode)

(Ground only for Fixed-Mode).

O

2

The output of the regulator. A minimum of 10uF (0.15

Ω ≤ ESR ≤ 20Ω) capacitor must

be connected from this pin to ground to insure stability.

I

3

The input pin of regulator. Typically a large storage capacitor is connected from this

pin to ground to insure that the input voltage does not sag below the minimum

dropout voltage during the load transient response. This pin must always be 1.4V

Pin Description