MIC4930 Datasheet, PDF (2/17 Pages) Micrel Semiconductor – Hyper Speed Control 3A Buck Regulator

Micrel, Inc.
MIC4930
Ordering Information
Part Number⁽¹⁾
Top Mark
Temperature Range
Package⁽²⁾
MIC4930YFL
MIC4930
–40°C ≤ TJ ≤ +125°C
10-pin 3mm × 4mm DFN
Note:
1. Other options are available. Contact Micrel for details.
2. DFN is a GREEN, RoHS-compliant package. Lead finish is NiPdAu. Mold compound is Halogen free.
Pin Configuration
Lead Finish
Pb-Free
3mm × 4mm DFN (FL)
(Top View)
Pin Description
Pin Number
1, 2, EP
Pin Name
PGND
3, 8
PVIN
4
AVIN
5
AGND
6
FB
7
PG
9
EN
10
SW
Pin Function
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.
March 20, 2014
2
Revision 1.1