MPS Releases High Efficiency, Synchronous, Step-Down LED Driver

By Rob GrayJuly 16, 2017

Monolithic Power Systems, Inc. — an integrated power solutions company headquartered in San Jose, California — introduced MPQ4425M, a high-frequency, synchronous, rectified, step-down, switch-mode white LED driver with built-in power MOSFETs.

The step-down LED driver offers a compact solution with minimal number of readily-available standard external components to achieve 1.5A of continuous output current with a superb load and line regulation over a broad input supply range. The LED driver uses synchronous mode operation to attain high efficiency.

Key Features and Functionalities of MPS High-Frequency, Synchronous, Rectified, Step-Down, Switch-Mode LED Driver

The AEC-Q100 Qualified MPQ4425M eliminates manufacturing and design risks, which dramatically accelerates the time to market. In addition, the LED driver integrates top-class protection features including over-current protection (OCP) and thermal shutdown (TSD). Current-mode operation eases loop stabilization and provides fast transient response. Other prime features of the high-frequency, synchronous, rectified, step-down, switch-mode LED driver include -

  • 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
  • AEC-Q100 Grade-1

Applications of MPS High-Frequency, Synchronous, Rectified, Step-Down, Switch-Mode  LED Driver

  • Automotive
  • Reading Lights
  • Dome Lights
  • Puddle Lights
  • Automotive LED Lighting
  • Map Lights
  • DRL
  • Backup Lights

The high-frequency, synchronous, rectified, step-down, switch-mode LED driver is available in a 2.5mm X 3mm space-saving QFN-13 package. All parts of the new LED driver are MPS green, lead-free, halogen-free, and adhere to the RoHS directive. Please visit the MPS website under Quality Assurance to know more about MPS green status.

For more information and purchasing queries about the new product, please contact a WPGA specialist.

Download the Data Sheet

Download the Evaluation Board Document