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AP1084T25L-U

5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR

Diodes Incorporated. 

Pin Assignment

AP1084

5A LOW DROPOUT POSITIVE ADJUSTABLE OR

FIXED-MODE REGULATOR

(1) TO252-3L

( Top View )

3

VIN

2

VOUT

1

Adj (GND)

Tab is VOUT

(3) TO220-3L

( Top View)

3

2

1

VIN

VOUT

Adj (GND)

Tab is VOUT

(2) TO263-3L

( Top View )

3

VIN

2

VOUT

1

Adj (GND)

Tab is VOUT

Pin Description

Pin Name I/O Pin #

Description

Adj (GND) I

Adjustable (Ground only for fixed mode)

1 A resistor divider from this pin to the VOUT pin and ground sets the output voltage

(Ground only for Fixed-Mode).

VOUT

O

2

The output of the regulator. A minimum of 10uF (0.15Ω ≤ ESR ≤ 20Ω) capacitor must

be connected from this pin to ground to insure stability.

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

VIN

I

3

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

(1.3V) higher than VOUT in order for the device to regulate properly.

AP1084 Rev. 9

DS31070

3 of 11

www.diodes.com

JANUARY 2010

© Diodes Incorporated

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