MIC23031_10 Datasheet, PDF (2/18 Pages) Micrel Semiconductor – 4MHz PWM 400mA Buck Regulator with HyperLight Load

Micrel Inc.
MIC23031
Ordering Information
Part Number
Marking
Code
Nominal
Junction
Output Voltage Temperature Range
Package
MIC23031-AYMT
MIC23031-GYMT
MIC23031-FYMT
MIC23031-4YMT
MIC23031-CYMT
GEA
GEG
GEF
GE4
GEC
Adjustable
1.8V
1.5V
1.2V
1.0V
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
6-Pin 1.6mm × 1.6mm Thin MLF^®
6-Pin 1.6mm × 1.6mm Thin MLF^®
6-Pin 1.6mm × 1.6mm Thin MLF^®
6-Pin 1.6mm × 1.6mm Thin MLF^®
6-Pin 1.6mm × 1.6mm Thin MLF^®
Notes:
1. Other options available. Contact Micrel for details.
2. Thin MLF^® is GREEN RoHS-compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
Lead Finish
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pin Configuration
VIN 1
6 PGND
VIN 1
6 GND
SW 2
5 AGND
SW 2
5 FB
SNS 3
4 EN
6-Pin 1.6 x 1.6mm Thin MLF^® (MT)
Fixed (Top View)
SNS 3
4 EN
6-Pin 1.6 x 1.6mm Thin MLF^® (MT)
Adjustable (Top View)
Pin Description
Fixed
Option
1
2
Adjustable
Option
1
2
3
3
4
4
5
−
−
6
−
ePad
5
−
6
ePad
Pin Name
VIN
SW
SNS
EN
AGND
FB
PGND
GND
HS PAD
Pin Function
Input Voltage: Connect a capacitor to ground to decouple the noise.
Switch (Output): Internal power MOSFET output switches.
Sense: Connect to V_OUT as close to output capacitor as possible to sense output
voltage.
Enable (Input): Logic high enables operation of the regulator. Logic low will shut down
the device. Do not leave floating.
Analog Ground: Connect to central ground point where all high current paths meet
(C_IN, C_OUT, PGND) for best operation.
Feedback (Input): Connect resistor divider at this node to set output voltage. Resistors
should be selected based on a nominal V_FB of 0.62V.
Power Ground.
Ground.
Connect to PGND or GND.
October 2010
2
M9999-102210-A