MP1601 – 1A, SYNCHRONOUS, STEP-DOWN CONVERTER WITH 11µA IQ
PIN FUNCTIONS
Pin # Name Description
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.
1
FB/PG
2
3
GND Power ground.
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.
VIN
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.
4
5
6
EN On/off control.
Output voltage power rail and input sense. Connect the load to OUT. An output capacitor is
needed to decrease the output voltage ripple.
OUT
MP1601 Rev. 1.0
3/24/2016
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