MP4425M
High Efficiency 1.5A, 36V, 2.2MHz Synchronous Step Down LED Driver
DESCRIPTION
The MP4425M is a high‐frequency, 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.
FEATURES
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
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 the MPS
website under Quality Assurance. "MPS" and "The Future of Analog IC Technology" are registered trademarks of
Monolithic Power Systems, Inc.
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