MP1601 Rev. 1.0

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12

3/24/2016

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PIN FUNCTIONS

Pin # Name Description

1

FB/PG

MP1601GTF: Feedback. An external resistor divider from the output to GND tapped to FB sets

the output voltage.

MP1601GTF-XX: Power good indicator. The output of PG is an open-drain output. Keep PG

pulls up voltage is not more than Vin.

2

GND Power ground.

3

VIN

Supply voltage. The MP1601 operates on a +2.3V to +5.5V unregulated input. A decoupling

capacitor is needed to prevent large voltage spikes from appearing at input.

4

SW

Output switching node. SW is the drain of the internal high-side P-channel MOSFET. Connect

the inductor to SW to complete the converter.

5

EN

On/off control.

6

OUT

Output voltage power rail and input sense. Connect the load to OUT. An output capacitor is

needed to decrease the output voltage ripple.