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HV9805 Datasheet Off-line Led Driver

Manufacturer: Microchip Technology

Overview: HV9805 Off-Line LED Driver with True DC Output Current.

General Description

The HV9805 driver integrated circuit (IC) is targeted at general LED lighting products, such as LED lamps and LED lighting fixtures with a maximum power rating of about 25W at 120VAC and about 50W at 230VAC.

A two-stage topology provides true constant current drive for the LED load while drawing mains power with high power factor.

The first stage, a boundary conduction mode boost converter, transfers power from the AC line to a second stage with high power factor and high efficiency.

Key Features

  • Provides True DC Light and protects load from line voltage transients.
  • Driver topology includes: - Boundary Conduction Mode (BCM) Boost Converter with Power Factor Correction a) High Power Factor (98% typical) b) High Efficiency (90% typical) - Linear Post-Regulator with Low Overhead Voltage a) Zero LED Current/Brightness Ripple b) Overvoltage Protection for LEDs c) High Efficiency d) ±4% Reference Over Temperature.
  • Simple VDD Supply: - No Auxiliary Winding Required.

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HV9805 Distributor