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MP4658 - 80V Return LED Driver

Description

The MP4658 is a 4-string, secondary-side LED driver for LED backlighting, and is ideal for monitor and small-sized TV LED backlighting.

It controls the flyback power stage to regulate the LED current loop and the output supply voltage.

The MP4658 integrates 4-string LED current balancing.

Features

  • numerous smart protections to increase system reliability, including open LED protection, short LED string protection, LEDx short-to-ground protection, FB over-voltage protection (OVP), feedback open protection, and thermal protection. The MP4658 is available in an SOIC-16 package.

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Full PDF Text Transcription

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MP4658 4-String, Max 200mA/Channel, 80V Return LED Driver with AC/DC Feedback DESCRIPTION The MP4658 is a 4-string, secondary-side LED driver for LED backlighting, and is ideal for monitor and small-sized TV LED backlighting. It controls the flyback power stage to regulate the LED current loop and the output supply voltage. The MP4658 integrates 4-string LED current balancing. Powered by a 6V to 36V input supply voltage (VIN), the MP4658 outputs a compensation signal to control the primary-side flyback (or other power stage) via an optocoupler to regulate the output voltage (VOUT). The MP4658 supports analog dimming and PWM dimming to the LED current through the ADIM and PDIM pins. For analog dimming, apply a pulse signal with a frequency above 5kHz to the ADIM pin.
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