AP1117

1A LOW DROPOUT POSITIVE ADJUSTABLE OR

FIXED-MODE REGULATOR

AP1117 Rev. 6

2 of 11

MARCH 2007

www.diodes.com

SOT89-3L

Adj (GND)

Vout

Vin

1

3

2

Tab is Vout

SOT223-3L

Vin

Vout

Adj (GND)

Tab is Vout

( Top View )

3

2

1

TO220-3L

3

2

1

Adj (GND)

FRONT VIEW

TO252-3L / TO263-3L

3

2

1

Vin

Vout

Tab is Vout

( Top View )

Adj (GND)

NAME

I/O

PIN #

FUNCTION

Adj (GND)

I

1

(Ground only for Fixed-Mode).

O

2

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

must be connected from this pin to ground to insure stability.

I

3

The input pin of regulator. Typically a large storage capacitor (0.15Ω ≤ ESR ≤ 20Ω)

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

Pin Assignments

Pin Descriptions