MP2159A – 1 A, 6 V, 1.5 MHz SYNCHRONOUS STEP-DOWN CONVERTER

MP2159A Rev. 1.02

www.MonolithicPower.com

9

6/30/2016

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PIN FUNCTIONS

TSOT23-8

Pin #

Name

Description

1

PG

Power good indicator. The output of PG is an open drain with an internal pull-up

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

regulation level. If FB voltage is out of this regulation range, it is low.

2

VIN

Supply voltage. The MP2159A operates from a +2.5 V to +6 V unregulated input. C1 is

required to prevent large voltage spikes from appearing at the input.

3

SW

Switch output.

4

PGND

Power ground.

5

OUT

Input sense pin for output voltage.

6

AGND

Analog ground for internal control circuit.

7

FB

Feedback. An external resistor divider from the output to AGND (tapped to FB) sets the

output voltage.

8

EN

On/off control.