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2022 Microchip Technology Inc. and its subsidiaries

DS20006662A-page 11

MIC23451

3.0

PIN DESCRIPTIONS

The descriptions of the pins are listed in Table 3-1.

TABLE 3-1:

PIN FUNCTION TABLE

Pin Number

Pin Name

Description

26, 4, 7

SW1, 2, 3 Switch (Output). Internal power MOSFET output switches for output 1/2/3.

21, 19, 15

EN1, 2, 3 Enable (Input). Logic high enables operation of regulator 1/2/3. Logic low will shut

down the device. Do not leave floating.

22, 18, 12

voltage.

23, 17, 14

FB1, 2, 3 Feedback. Connect a resistor divider from output 1/2/3 to ground to set the output

voltage.

20, 16, 13

PG1, 2, 3 Power Good. Open-drain output for the power good indicator for output 1/2/3. Place

a resistor between this pin and a voltage source to detect a power good condition.

EP1, 24, 11

AGND

Analog Ground. Connect to quiet ground point away from high-current paths, for

25, 5, 8

PVIN1, 2, 3 Power Input Voltage. Connect a capacitor to PGND to localize loop currents and

decouple switching noise.

3, 6, 9

AVIN1, 2, 3 Analog Input Voltage. Connect a capacitor to AGND to decouple noise.

EP2, 10, 2, 1

PGND

Power Ground.