MIC4930 Datasheet, PDF (11/24 Pages) Micrel Semiconductor – Hyper Speed Control 3A Buck Regulator

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
3, 8
4
5
6
7
9
10
PGND
PVIN
AVIN
AGND
FB
PG
EN
SW
Power Ground.
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.
Analog input voltage: Connect a 1μF ceramic capacitor between AVIN and AGND
to decouple the noise for the internal reference and error comparator.
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.
Feedback (input): Connect an external divider between VOUT and AGND to
program the output voltage.
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.
Enable (input): Logic high enables operation of the regulator. Logic low will shut
down the device. Do not leave floating.
Switch (output): Internal power MOSFET output switches.
 2016 Microchip Technology Inc.
DS20005669A-page 11