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Monolithic Power Systems (MPS) MPQ7235 Automotive Infrared LED Drivers

Monolithic Power Systems (MPS) MPQ7235 Automotive Infrared LED Drivers provide a high-frequency, synchronous, rectified, step-down, switch-mode LED device with integrated power MOSFETs. The MPQ7235 delivers a continuous output current (ILED) of 1.5A, and a peak LED current (IPEAK) of 3A. The device achieves excellent load and line regulation across a wide input supply range. High efficiency is accomplished via a synchronous mode operation.

The MPS MPQ7235 Automotive Infrared LED Drivers implements low pulse-width modulation (PWM) dimming frequencies at small dimming duty cycles. Additionally, the device provides PWM dimming frequencies as low as 10Hz to adjust infrared radiation (IR) LED driver applications. It is compatible with 30fps, 60fps, and 120fps dimming. The MPQ7235 provides a fast transient response and eases loop stabilization through a current-mode operation. Complete protection features such as over-current protection (OCP) and thermal shutdown are available.

The MPQ7235 is AEC-Q100 qualified, in a space-saving QFN-13 (2.5mm x 3mm) package, and requires a minimal number of standard external components.

Features

  • Built for a wide range of IR LED applications:
    • Wide 4V to 36V operating Input Voltage (VIN) range
    • Up to 1.5A of continuous LED current (ILED)
    • Up to 3A of peak LED current (IPEAK) with low dimming frequencies at small duty cycles
    • 10Hz to 2kHz PWM Dimming frequency
    • Compatible with 30fps, 60fps, and 120fps dimming
  • High performance for improved thermals:
    • 85mΩ/50mΩ Low RDS(ON) internal power MOSFETs
    • 0.2V Reference Voltage (VREF)
    • High-efficiency synchronous mode operation
  • Optimized for EMC and EMI:
    • Default 2.2MHz Switching Frequency (fSW)
    • EMI Reduction techniques
  • Full protection features:
    • LED Short and open fault indication
    • OCP with Valley current detection
    • Thermal shutdown
  • Additional features:
    • FCCM
    • Internal Soft Start (SS)
    • Available in a QFN-13 (2.5mm x 3mm) package
    • Available in a wettable flank package
    • CISPR25 Class 5 compliant
    • Available in AEC-Q100 Grade 1

Applications

  • Infrared (IR) LED drivers for driver
  • Monitoring Systems (DMS)
  • IR Illumination for cameras
  • Surveillance systems

Typical Application

Application Circuit Diagram - Monolithic Power Systems (MPS) MPQ7235 Automotive Infrared LED Drivers

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Monolithic Power Systems (MPS) MPQ7235 Automotive Infrared LED Drivers