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MP2489 - Step Down White LED Driver

General Description

The MP2489 is a high efficiency step-down converter designed in continuous current mode for driving the high brightness Light Emitting Diodes (LED) from wide input voltage 6V

60V.

Key Features

  • Internal 65V MOSFET.
  • Wide 6V to 60V 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 TSOT23-5, QFN6(3x 3mm) and SOIC8E Packages.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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The Future of Analog IC Technology DESCRIPTION The MP2489 is a high efficiency step-down converter designed in continuous current mode for driving the high brightness Light Emitting Diodes (LED) from wide input voltage 6V–60V. The MP2489 employs 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 optimized circuit stabilization and very quick response time without the loop compensation. Its low 202mV average feedback voltage reduces power loss and improves the converter efficiency. The MP2489 implements PWM and analog dimming together with DIM pin. The MP2489 includes thermal overload protection preventing damage in the event of an output overload.