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Monolithic Power Systems (MPS) MP7235 Infrared Radiation LED Drivers

Monolithic Power Systems (MPS) MP7235 Infrared Radiation LED Drivers offer a high-frequency, synchronous, rectified, step-down, switch-mode LED compact solution. The MP7235 delivers 1.5A continuous output current (ILED), and 3A peak LED current (IPEAK), with exceptional load and line regulation across a wide input supply range. Additionally, high efficiency is attained via synchronous mode operation.

The MPS MP7235 Infrared Radiation LED Drivers feature low pulse-width modulation (PWM) dimming frequencies at small dimming duty cycles. The device supports PWM dimming frequencies as low as 10Hz to adjust infrared radiation (IR) in LED driver applications. The MP7235 is compatible with 30fps, 60fps, and 120fps dimming. The MP7235 driver’s current-mode operation implements a fast transient response and eases loop stabilization. The device includes over-current protection (OCP) and thermal shutdown protection features.

The MPS MP7235 Drivers is encapsulated in a space-saving QFN-13 (2.5mm x 3mm) package. The MP7235 needs a minimal number of readily available, 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

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) MP7235 Infrared Radiation LED Drivers

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Monolithic Power Systems (MPS) MP7235 Infrared Radiation LED Drivers