AP1121

DUAL 1A LOW DROPOUT POSITIVE REGULATOR

AP1121 Rev. 5

2 of 7

FEBRUARY 2009

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1

2

3

4

8

7

6

5 GND

GND

GND

GND

SOP-8L

AP1121

( Top View )

Pin Name

Descriptions

GND

Ground

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

Ω ≤ ESR ≤ 20Ω) must be

connected from this pin to ground to insure stability.

2.5V/1.8V

The input pin of regulator. Typically a large storage capacitor (0.15

Ω ≤ ESR ≤ 20Ω) is

connected from this pin to ground.

Pin Assignments

Pin Descriptions