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MT7844S - Non-isolated APFC BUCK LED Driver

Description

The MT7844S is a high-PF, non-isolate LED Driver IC.

The floating-ground, high-side BUCK topology makes full wave detection possible.

High precision output current is achieved.

Features

  • Single-stage active power factor correction (PFC > 0.90).
  • Ultra-high voltage power supply without start-up resistor and power supply diode.
  • High accurate LED current (±3%).
  • Good Line and Load Re.

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Datasheet Details

Part number MT7844S
Manufacturer Maxic Technology
File Size 258.77 KB
Description Non-isolated APFC BUCK LED Driver
Datasheet download datasheet MT7844S Datasheet

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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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Maximizing IC Performance MT7844S Non-isolated APFC BUCK LED Driver DESCRIPTION The MT7844S is a high-PF, non-isolate LED Driver IC. The floating-ground, high-side BUCK topology makes full wave detection possible. High precision output current is achieved. MT7844S works in Quasi-Resonant Mode (QRM), which improves both of efficiency and EMI performance. The system integrates the ultra-high voltage power supply circuit, the start-up resistor and power supply diode are not needed. Low external component count and cost is achieved. Various protections such as over voltage protection (OVP), over current protection (OCP) and over temperature compensation, etc. are embedded to improve reliability. The MT7844S integrates 550V MOSFET, which further simplifies external circuit.
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