Automotive-Grade High Efficiency 1.5A, 36V, 2.2MHz Synchronous Step Down LED Driver



The MPQ4425M 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 MPQ4425M 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 MPQ4425M requires a minimal number of readily-available standard external components, and is available in a space-saving QFN-13 (2.5mmx3mm) package.


  • EMI Reduction Technique
  • Wide 4V-to-36V Operating Input Range
  • 85mO/50mO 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
  • AEC-Q100 Grade-1


  • SyncYes
  • Open LED ProtectionYes
  • PackageQFN-17 (3x5x1.6)
  • GradeAutomotive
  • TypeBuck
  • Vfb (V)0.2
  • fsw (max) (kHz)2200
  • Iq (mA)0.6
  • Iout (max) (A)1.5
  • Vin (max) (V)36
  • 最小输入电压4
  • Ishutdown (µA)12