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MP2483 - Programmable Frequency White LED Driver

Description

The MP2483 is a 55V, 2.5A, white LED driver suitable for either step-down or inverting step-up/down applications.

It achieves 2.5A peak output current over a wide input supply range with excellent load and line regulation.

Features

  • 2.5A Maximum Output Current.
  • Unique Step-up/down Operation (Buck- Boost Mode).
  • Wide 4.5V to 55V Operating Input Range for Step-Down.

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Full PDF Text Transcription

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The Future of Analog IC Technology DESCRIPTION The MP2483 is a 55V, 2.5A, white LED driver suitable for either step-down or inverting step-up/down applications. It achieves 2.5A peak output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes thermal shutdown, cycle-by-cycle peak current limiting, open strings protection and output short circuit protection. The MP2483 incorporates both DC and PWM dimming onto a single control pin. The separate input reference ground pin allows for direct enable and/or dimming control for a positive to negative power conversion.
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