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Monolithic Power Systems (MPS) MPQ4425A Synchronous Step-Down LED Driver

Monolithic Power Systems (MPS) MPQ4425A Synchronous Step-Down LED Driver is a high-frequency, synchronous, rectified, step-down, switch-mode white LED driver with built-in power MOSFETs. The device offers a compact solution to achieve a 1.5A continuous output current with excellent load/line regulation over a wide input supply range. The MPQ4425A has synchronous mode operation to get high efficiency. Current mode operation provides a 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 (2.5mm x 3mm) 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 (100Hz minimum dimming frequency)
  • Forced CCM mode
  • 0.2V reference voltage
  • Internal soft start
  • Thermal shutdown
  • Fault indication for LED short, open, and thermal shutdown
  • Over-Current Protection (OCP) with valley current detection
  • -40°C to +125°C operating junction temperature range
  • CISPR25 Class 5 compliant
  • Available in a QFN-13 (2.5mm x 3mm) package
  • Available in a wettable flank package
  • Available in AEC-Q100 Grade-1

Applications

  • Automotive LED lighting

Typical Application

Application Circuit Diagram - Monolithic Power Systems (MPS) MPQ4425A Synchronous Step-Down LED Driver
Publicado: 2019-08-16 | Actualizado: 2023-11-01