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DS20005669A-page 11

MIC4930

3.0

PIN DESCRIPTIONS

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

TABLE 3-1:

PIN FUNCTION TABLE

3X4 DFN

Symbol

Description

1, 2, EP

PGND

Power Ground.

3, 8

PVIN

Power input voltage: Connect a 10μF ceramic capacitor between PVIN and PGND

for input decoupling. Pins 3 and 8 are internally connected inside the package.

4

AVIN

Analog input voltage: Connect a 1μF ceramic capacitor between AVIN and AGND

to decouple the noise for the internal reference and error comparator.

5

AGND

Analog ground input: Connect to a quiet ground plane for best operation. Do not

route power switching currents on the AGND net. Connect AGND and PGND nets

together at a single point.

6FB

Feedback (input): Connect an external divider between VOUT and AGND to

program the output voltage.

7PG

Power Good (output): Open-drain output. A pull-up resistor from this pin to a

voltage source is required to detect an output power-is-good condition.

9EN

Enable (input): Logic high enables operation of the regulator. Logic low will shut

down the device. Do not leave floating.

10

SW

Switch (output): Internal power MOSFET output switches.