Monolithic Power Systems (MPS) MP7230 Infrared LED Drivers

Monolithic Power Systems (MPS) MP7230 Infrared LED Drivers introduce a fixed-frequency, constant current, buck-boost device built for integrated power MOSFETs. The MP7230 supplies 1.2A of continuous output current in a very compact solution, with exceptional load and line regulation spanning a wide input supply range. The MP7230 buck mode allows configurability with up to 3A of constant load current. The MP7230 supports PWM dimming frequencies as low as 10Hz to adjust infrared radiation (IR) in LED driver applications. The device is also compatible with 30FPS, 60FPS, and 120FPS dimming.

Constant frequency hysteretic control mode supplies an extremely fast transient response without loop compensation. The device’s full protection features include over-current protection (OCP), thermal derating (TD), and thermal shutdown (TSD).

The MP7230 comes in a space-saving QFN-19 (3mm x 4mm) package and requires a minimal number of standard external components.

Features

  • Built for a wide range of IR LED applications:
    • Wide 6V to 42V operating input range
    • 10Hz to 2kHz PWM Dimming frequency
    • Compatible with 30FPS, 60FPS, and 120FPS dimming
  • High performance for improved thermals:
    • Configurable LED current without sensing resistor
    • 44mΩ/40mΩ Low RDS(ON) Internal Power MOSFETs
    • High-efficiency synchronous mode operation
  • Full protection features:
    • LED Short (to GND and battery), LED open, and output over-voltage fault indication
    • Over-Current Protection (OCP) with latch-off mode
    • Configurable Thermal Derating via NTC
    • Remote temperature sense
    • Thermal shutdown
  • Optimized for EMC/EMI:
    • Default 410kHz switching frequency with spread spectrum
    • EMI Reduction techniques
  • Additional features:
    • Configurable 1.2A Current in BuckBoost Mode or 3A in Buck Mode
    • 5% LED Current accuracy with 700mA to 1.2A in buck-boost mode or 1A to 2A in buck mode
    • Available in a QFN-19 (3mm x 4mm) package
    • Available in a wettable flank package

Applications

  • Infrared (IR) LED drivers
  • Infrared (IR) illumination for cameras
  • Surveillance systems

Typical Application

Application Circuit Diagram - Monolithic Power Systems (MPS) MP7230 Infrared LED Drivers

Monolithic Power Systems (MPS) MP7230 Infrared LED Drivers