MPQ4425A
High Efficiency 1.5A, 36V, 2.2MHz,
Synchronous Step-Down LED Driver,
AEC-Q100 Qualified
DESCRIPTION
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
(2.5mmx3mm) package.
FEATURES
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
CISPR25 Class 5 Compliant
Available in a QFN-13 (2.5mmx3mm)
Package
Available in a Wettable Flank Package
Available in AEC-Q100 Grade-1
APPLICATIONS
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.
TYPICAL APPLICATION
EN/DIM
/FAULT
BST
MPQ4425A
EN/DIM
SW
VCC
FB
/FAULT
PGND AGND
LED+
LED-
MPQ4425A Rev. 1.0
www.MonolithicPower.com
1
7/24/2019
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
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