MIC23603 Datasheet, PDF (2/19 Pages) Micrel Semiconductor – 4MHz PWM 6A Buck Regulator

Micrel Inc.
Ordering Information
Part Number
Nominal Output
Voltage
Junction
Temp. Range
Package⁽¹⁾
MIC23603YML
ADJ
–40°C to +125°C
20-pin 4mm x 5mm DFN
Notes:
1. DFN is GREEN RoHS-compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
Pin Configuration
MIC23603
Lead Finish
Pb-Free
20-Pin 4mm x 5mm DFN (ML)
(Top View)
Pin Description
Pin Number
1, 2, 9-12, 19, 20
3, 13, 14, 18
4
5
Pin Name
SW
PVIN
PG
EN
6
SNS
7
FB
8,16
AGND
15
SS
17
AVIN
EP
PGND
Pin Function
Switch output. Internal power MOSFET output switches.
Input voltage. Connect a capacitor to ground to decouple the noise.
Power good. Connect an external resistor to a voltage source to supply a power good indicator.
Enable input. Logic high enables operation of the regulator. Logic low shuts down the device. Do
not leave floating.
Sense input. Connect to VOUT as close to output capacitor as possible to sense output voltage.
Feedback input. Connect an external divider between VOUT and ground to program the output
voltage.
Analog ground. Connect to central ground point where all high current paths meet (CIN, COUT,
PGND) for best operation.
Soft Start. Place a capacitor from this pin to ground to program the soft start time. Do not leave
floating, 2.2nF minimum CSS is required.
Supply voltage. Analog control circuitry. Connect to VIN through a 10Ω resistor.
Power Ground.
November 5, 2013
2
Revision 1.1