MIC23031 Datasheet, PDF (2/17 Pages) Micrel Semiconductor – 4MHz PWM 400mA Buck Regulator with Hyper Light Load™

Micrel Inc.
MIC23031
Ordering Information
Part Number
Marking
Code
MIC23031-AYMT
MIC23031-GYMT
MIC23031-FYMT
MIC23031-4YMT
MIC23031-CYMT
GEA
GEG
GEF
GE4
GEC
Nominal Output
Voltage
ADJ
1.8V
1.5V
1.2V
1.0V
Junction
Temperature Range
-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
Package
6-Pin 1.6x1.6 Thin MLF^®
6-Pin 1.6x1.6 Thin MLF^®
6-Pin 1.6x1.6 Thin MLF^®
6-Pin 1.6x1.6 Thin MLF^®
6-Pin 1.6x1.6 Thin MLF^®
Lead Finish
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
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.
Pin Configuration
VIN 1
6 PGND VIN 1
6 GND
SW 2
5 AGND SW 2
5 FB
SNS 3
4 EN
Fixed
(Top View)
1.6 x 1.6mm Thin MLF (MT)
SNS 3
4 EN
Adjustable
(Top View)
1.6 x 1.6mm Thin MLF (MT)
Pin Description
Fixed Option ADJ Option
1
1
2
2
3
3
4
4
5
-
-
5
6
-
E-PAD
-
6
E-PAD
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
May 2008
2
M9999-051608-A