MP2144 Rev. 1.03

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8

12/20/2012

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PIN FUNCTION

TSOT23

Pin #

Name

Description

1

PG

Power Good Indicator. The output of this pin is an open drain with an internal pull up

resistor to IN. PG is pulled up to VIN when the FB voltage is within 10% of the regulation

level. If the FB voltage is out of that regulation range, it is LOW.

2

VIN

Supply Voltage. The MP2144 operates from a +2.5V-to-+5.5V unregulated input. C1

prevents large voltage spikes from appearing at the input.

3

SW

Switch Output

4

PGND Power Ground

5

OUT

Input Sense. For output voltage sense.

6

AGND Analog Ground. Internal control circuit reference.

7

FB

Feedback. Connect an external resistor divider from the output to GND to set the output

voltage.

8

EN

On/Off Control