MIC23250 Datasheet, PDF (2/15 Pages) Micrel Semiconductor – 4MHz Dual 400mA Synchronous Buck Regulator with HYPER LIGHT LOAD™

Micrel, Inc.
Ordering Information
Part Number
Marking
MIC23250-GFHYMT WV1
Nominal
Output
Voltage 1
1.575V
Nominal
Output
Voltage 2
1.8V
MIC23250-G4YMT
WV5
1.8V
1.2V
MIC23250-C4YMT
WV2
1.0V
1.2V
MIC23250-3BYMT
MIC23250-W4YMT
MIC23250-Adj*
WV3
WV4
TBD
1.1V
1.6V
ADJ
0.9V
1.2V
ADJ
Note: * Available Q2/Q3 2008
Junction
Temp. Range
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
Package
10-Pin 2mm x 2mm
Thin MLF^®
10-Pin 2mm x 2mm
Thin MLF^®
10-Pin 2mm x 2mm
Thin MLF^®
10-Pin 2mm x 2mm
Thin MLF^®
10-Pin 2mm x 2mm
Thin MLF^®
12-Pin 2.5mm x
2.5mm Thin MLF^®
MIC23250
Lead
Finish
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pin Configuration
SNS1 1
EN1 2
AGND 3
SW1 4
PGND 5
10 SNS2
9 EN2
8 AVIN
7 SW2
6 VIN
10-Pin 2mm x 2mm Thin MLF^® (MT)
(Top View)
Pin Description
Pin Number
1
2
3
4
5
6
7
8
9
10
Pin Name
SNS1
EN1
AGND
SW1
PGND
VIN
SW2
AVIN
EN2
SNS2
Pin Name
Sense 1 (Input): Error amplifier input. Connect to feedback resistor network to
set output 1 voltage.
Enable 1 (Input): Logic low will shut down output 1. Logic high powers up
output 1. Do not leave unconnected.
Analog Ground. Must be connected externally to PGND.
Switch Node 1 (Output): Internal power MOSFET output.
Power Ground.
Supply Voltage (Power Input): Requires close bypass capacitor to PGND.
Switch Node 2 (Output): Internal power MOSFET output.
Supply Voltage (Power Input): Analog control circuitry. Connect to VIN.
Enable 2 (Input): Logic low will shut down output 2. Logic high powers up
output 2. Do not leave unconnected.
Sense 2 (Input): Error amplifier input. Connect to feedback resistor network to
set output 2 voltage.
December 2007
2
M9999-121707-A