MP4425M
High Efficiency 1.5A, 36V, 2.2MHz
Synchronous Step Down LED Driver
DESCRIPTION
FEATURES
The
MP4425M
is
a
high-frequency,
EMI Reduction Technique
Wide 4V-to-36V Operating Input Range
85mΩ/50mΩ Low RDS(ON) Internal Power
MOSFETs
High-Efficiency Synchronous Mode
Operation
Default 2.2MHz Switching Frequency
PWM Dimming (Min 100Hz Dimming
Frequency)
Forced CCM Mode
0.2V Reference Voltage
Internal Soft-Start
Fault Indication for LED Short, Open and
Thermal Shutdown
Over-Current Protection (OCP) with Valley-
Current Detection
synchronous, rectified, step-down, switch-mode
white LED driver with built-in power MOSFETs.
It offers a very compact solution to achieve a
1.5A continuous output current with excellent
load and line regulation over a wide input
supply range. The MP4425M has synchronous
mode operation to get high efficiency.
Current-mode operation provides fast transient
response and eases loop stabilization.
Full protection features include over-current
protection (OCP) and thermal shut down (TSD).
The MP4425M requires a minimal number of
readily-available standard external components,
and is available in a space-saving QFN-13
(2.5mmx3mm) package.
Thermal Shutdown
Available in a QFN-13 (2.5mmx3mm)
Package
CISPR25 Class 5 Compliant
APPLICATIONS
Automotive LED Lighting
All MPS parts are lead-free, halogen 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
BST
MP4425M
LED+
LED-
SW
EN/DIM
EN/DIM
/FAULT
VCC
FB
/FAULT
PGND AGND
MP4425M Rev.1.0
10/12/2016
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
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