High Efficiency 1.5A, 36V, 2.2MHz,
Synchronous Step-Down LED Driver,
The MPQ4425A 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 1.5A
of continuous output current with excellent load
and line regulation over a wide input supply
range. The MPQ4425A 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 shutdown (TSD).
The MPQ4425A requires a minimal number of
readily available, standard external components,
and is available in a space-saving QFN-13
Wide 4V to 36V Operating Input Range
85mΩ/50mΩ Low RDS(ON) Internal Power
High-Efficiency Synchronous Mode
Default 2.2MHz Switching Frequency
PWM Dimming (Min 100Hz Dimming
Forced CCM Mode
0.2V Reference Voltage
Internal Soft Start
Fault Indication for LED Short, Open, and
Over-Current Protection (OCP) with Valley
CISPR25 Class 5 Compliant
Available in a QFN-13 (2.5mmx3mm)
Available in a Wettable Flank Package
Available in AEC-Q100 Grade-1
Automotive LED Lighting
All MPS parts are lead-free, halogen free, and adhere to the RoHS directive.
For MPS green status, visit the MPS website under Quality
Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are
registered trademarks of Monolithic Power Systems, Inc. or its subsidiaries.
MPQ4425A Rev. 1.0
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