MP24892

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6V-45V input Buck LED Driver, Lower Cost version of MP2489


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产品描述

The MP24892 is a high-efficiency step-down converter that functions in continuous current mode to drive high-brightness LED. It can take a wide input voltage range of 6V–45V. The MP24892 employs a hysteretic control architecture to regulate a high-accuracy LED current, which is measured through an external high-side current-sensing resistor. Moreover, this control scheme provides optimal circuit stabilization and a very quick response time without loop compensation. Its low 202mV average feedback voltage reduces power loss and improves the converter efficiency. The MP24892 implements PWM and analog dimming together through the DIM pin.  The MP24892 includes thermal overload protection that prevents damage in the event of an output overload.  The MP24892 is available in a small TSOT23-5 package.

产品特性

  • Wide 6V-to-45V Input Range
  • 1A Output Current
  • High Efficiency (>95%)
  • Hysteresis Control
  • PWM & Analog Dimming
  • 1000:1 PWM Dimming Resolution
  • Thermal Shutdown
  • Inherent Open LED Protection
  • Short LED Protection
  • Available in a TSOT23-5 Package

技术参数

  • SyncNo
  • Open LED ProtectionNo
  • PackageTSOT23-5
  • GradeCatalog
  • TypeLow-Side Buck
  • Vfb (V)0.2
  • fsw (max) (kHz)600
  • Vin (max) (V)36
  • Vin (min) (V)4.5