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Monolithic Power Systems (MPS) MP24881 Step-Down LED Driver

Monolithic Power Systems (MPS) MP24881 Step-Down LED Driver is a 60V, monolithic, synchronous step-down LED driver with an integrated N-channel MOSFET and rectifier. It delivers up to 1.1A of continuous LED current (ILED) to high-power LEDs. The wide 10V to 60V input voltage (VIN) range accommodates a variety of step-down lighting applications. Hysteretic current mode minimizes the loop compensation design and achieves fast transient response, which makes the 25kHz pulse-width modulation (PWM) dimming frequency possible.

The Monolithic Power Systems (MPS) MP24881 supports analog dimming with a PWM or analog signal input, which helps remove the flicker caused by the PWM frequency (fPWM). The separated PWM and analog dimming input port enables all PWM signal-controlled hybrid dimming. The hybrid dimming depth can reach as low as 0.1%. Full protections include current-sense (CS) short protection, low-side (LS) reverse over-current protection (OCP), high-side (HS) OCP, and thermal shutdown. The MP24881 is available in an SOIC-8EP package.

Features

  • Wide 10V to 60V operating input voltage (VIN) range
  • Up to 1.1A of LED current (ILED)
  • Synchronous step-down converter
  • Internal 100mΩ high-side MOSFET (HS-FET)
  • Internal 110mΩ synchronous rectifier (SR)
  • Hysteretic control
  • Excellent Pulse-Width Modulation (PWM) dimming performance
    • Up to 25kHz PWM dimming frequency
    • 20000:1 wide dimming range
  • Up to 2MHz switching frequency (fSW)
  • 100mV reference voltage (VREF)
  • LED common cathode connection
  • Down to 0.1% dimming depth
  • All PWM signal-controlled hybrid dimming
  • High-side (HS) Over-Current Protection (OCP)
  • Current-Sense (CS) short protection
  • Low-side (LS) reverse OCP
  • Thermal shutdown
  • Available in an SOIC-8EP package

Applications

  • Landscape lighting
  • General LED lighting

Typical Application

Application Circuit Diagram - Monolithic Power Systems (MPS) MP24881 Step-Down LED Driver

Development Tool

Monolithic Power Systems (MPS) EV24881-S-00A Driver Evaluation Board

Demonstrates the capabilities of the MP24881, a 60V, monolithic, synchronous step-down LED driver.

Learn Moreà propos de Monolithic Power Systems (MPS) EV24881-S-00A Driver Evaluation Board View Productslié à Monolithic Power Systems (MPS) EV24881-S-00A Driver Evaluation Board
Publié le: 2025-07-14 | Mis à jour le: 2025-07-21