MIC33153 datasheet(12/28 Pages) MICROCHIP

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MIC33153

DS20006223B-page 12



2019 - 2022 Microchip Technology Inc.

3.0

PIN DESCRIPTIONS

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

TABLE 3-1:

PIN FUNCTION TABLE

Pin Number

(Fixed)

Pin Number

(Adjustable)

Name

Description

Soft-Start: Place a capacitor from this pin to ground to program the

soft start time. Do not leave floating, 100 pF minimum CSS is

required.

AGND

Analog Ground: Connect to central ground point where all high

current paths meet (CIN, COUT, PGND) for best operation.

VIN

Input Voltage: Connect a capacitor to ground to decouple the noise.

PGND

Power Ground.

5, 6, 7

OUT

Output Voltage: The output of the regulator. Connect to SNS pin. For

adjustable option, connect to feedback resistor network.

8, 9, 10

Switch: Internal power MOSFET output switches before inductor.

Enable: Logic high enables operation of the regulator. Logic low will

shut down the device. Do not leave floating.

SNS

Sense: Connect to VOUT as close to output capacitor as possible to

sense output voltage.

Power Good: Open-drain output for the Power Good (PG) indicator.

Use a pull-up resistor from this pin to a voltage source to detect a

power good condition.

—

Not internally connected.

—

Feedback: Connect a resistor divider from the output to ground to set

the output voltage.

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