MP2188 – DUAL 3A, 5.5V, 1.2MHz, SYNCHRONOUS STEP-DOWN SWITCHER

MP2188 Rev. 1.01

www.MonolithicPower.com

9

2/2/2016

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PIN FUNCTION

QFN16

Pin #

Name

Description

1

PG1

Power Good Indicator of channel 1. The output of this pin is an open drain with an internal

pull up resistor to VIN1. PG1 is pulled up to VIN1 when the FB1 voltage is within 10% of

the regulation level. If the FB1 voltage is out of that regulation range, it is LOW.

2

EN1

On/Off Control of channel 1.

3

FB1

Internal FB point of channel 1. Floating FB1 PIN will get pre-set fixed output voltage.

4

OUT2

Input Sense of channel 2. For output voltage sense.

5, 6,

13, 14

GND

Power Ground.

7

SW2

Switch Output of channel 2.

8

VIN2

Supply Voltage of channel 2. The MP2188 operates from a +2.5V-to-+5.5V unregulated

input.

9

PG2

Power Good Indicator of channel 2. The output of this pin is an open drain with an internal

pull up resistor to VIN2. PG2 is pulled up to VIN2 when the FB2 voltage is within 10% of

the regulation level. If the FB2 voltage is out of that regulation range, it is LOW.

10

EN2

On/Off Control of channel 2.

11

FB2

Internal FB point of channel 2. Floating FB2 PIN will get pre-set fixed output voltage.

12

OUT1

Input Sense of channel 1. For output voltage sense.

15

SW1

Switch Output of channel 1.

16

VIN1

Supply Voltage of channel 1. The MP2188 operates from a +2.5V-to-+5.5V unregulated

input.