MPQ4423H
High Efficiency 3A, 36V,
Synchronous Step Down Converter
AEC-Q100 Qualified
The Future of Analog IC Technology
DESCRIPTION FEATURES
The MPQ4423H is a high-frequency, Wide 4V to 36V Continuous Operating Input
synchronous, rectified, step-down, switch-mode
Range
converter with built-in power MOSFETs. It
85m /55m Low R Internal Power
DS(ON)
offers a very compact solution to achieve a 3A
MOSFETs
continuous output current with excellent load
High-Efficiency Synchronous Mode
and line regulation over a wide input supply
Operation
range. The MPQ4423H has synchronous mode
Default 410kHz Switching Frequency
operation for higher efficiency over the output
Synchronizes to a 200kHz to 2.2MHz
current load range.
External Clock
High Duty Cycle for Automotive Cold-crank
Current-mode operation provides fast transient
Power-Save Mode
response and eases loop stabilization.
Internal Soft-Start
Full protection features include over-current
Power Good
protection and thermal shut down.
OCP Protection and Hiccup
The MPQ4423H requires a minimal number of
Thermal Shutdown
readily-available standard external components,
Output Adjustable from 0.8V
and is available in a space-saving QFN-8
Available in an QFN-8 (3mmx3mm)
(3mmx3mm) package.
package
Available in AEC-Q100 Grade 1
APPLICATIONS
Automotive
Industrial Control System
Distributed Power Systems
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Quality Assurance. MPS and The
Future of Analog IC Technology are Registered Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
MPQ4423H Rev.1.1 www.MonolithicPower.com 1
9/16/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
2014 MPS. All Rights Reserved. MPQ4423H 36V, 3A SYNCHRONOUS STEP-DOWN CONVERTER
ORDERING INFORMATION
Part Number* Package Top Marking
MPQ4423HGQ QFN-8 (3mmx3mm)
See Below
MPQ4423HGQ-AEC1 QFN-8 (3mmx3mm)
* For Tape & Reel, add suffix Z (e.g. MPQ4423HGQZ)
TOP MARKING
ALN: product code of MPQ4423HGQ;
Y: year code;
LLL: lot number;
PACKAGE REFERENCE
TOP VIEW
1 8
FB PG
2
VCC 7 IN
3 6
EN/SYNC SW
45
BST GND
QFN-8 (3mmx3mm)
MPQ4423H Rev.1.1 www.MonolithicPower.com 2
9/16/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
2014 MPS. All Rights Reserved.