MIC22400_10 Datasheet, PDF (2/28 Pages) Micrel Semiconductor – 4A Integrated Switch Synchronous Buck Regulator with Frequency Programmable up to 4MHz

Micrel, Inc.
Ordering Information
Part Number
MIC22400YML
Voltage
Adjustable
Junction Temperature Range
–40° to +125°C
Package
20-Pin 3x4 MLF^®*
MIC22400YTSE**
Adjustable
–40° to +125°C
20-Pin e-TSSOP
Notes:
* MLF is a Green RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
** Contact Micrel Marketing for YTSE availability.
Pin Configuration
MIC22400
Lead Finish
Pb-Free
Pb-Free
20-Pin 3mm x 4mm MLF^® (ML)
20-Pin e-TSSOP (TS)
Pin Description
Pin Number
MLF-20
Pin Number
e-TSSOP-20
1
4
2
3, 5, 9
5
7, 12, 19
4
6
6
7
8
10, 17
11, 16
12, 13, 14, 15
8
9
10
11, 20
13, 18
14, 15, 16, 17
Pin Name Description
POR
CF
NC
COMP
FB
SGND
SVIN
PVIN
PGND
SW
Power-On-Reset (Output): Open-drain output device indicates when the output is
out of regulation and is active after the delay set by the DELAY pin.
Adjustable frequency with external capacitor. Refer to table on page 12.
Not connected internally.
Compensation pin (Input): Place a RC to GND to compensate the device, see
applications section.
Feedback (Input): Input to the error amplifier, connect to the external resistor
divider network to set the output voltage.
Signal Ground (Signal): Ground
Signal Power Supply Voltage (Input): Requires bypass capacitor to GND.
Power Supply Voltage (Input): Requires bypass capacitor to GND.
Power Ground (Signal): Ground
Switch (Output): Internal power MOSFET output switches.
December 2010
2
M9999-120310-F