MIC23254 Datasheet, PDF (2/17 Pages) Micrel Semiconductor – 4MHz Dual 400mA Synchronous Buck Regulator with Low Input Voltage and HyperLight Load™

Micrel, Inc.
MIC23254
Ordering Information
Part Number
MIC23254-GCYMT
Marking
Code
GCW
Nominal
Output
Voltage 1
1V
Nominal
Output
Voltage 2
1.8V
Junction
Temperature
Range
–40° to +125°C
Package
10-Pin 2mm x 2mm Thin MLF^®
Notes:
1. Thin MLF® is GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
Lead
Finish
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) Fixed Output
(Top View)
Pin Description
Pin Number
(Fixed)
Pin Name
1
SNS1
2
EN1
3
AGND
4
SW1
5
PGND
6
VIN
7
SW2
8
AVIN
9
EN2
10
SNS2
Pin Function
Sense 1 (Input): Connect to V_OUT1 as close to output capacitor as possible to sense 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): Connect to V_OUT2 as close to output capacitor as possible to sense output 2
voltage.
May 2010
2
M9999-052510