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HT7L4661 - Active PFC Non-isolation Buck LED Lighting Driver

General Description

The HT7L4661 is a Buck converter controller using quasi-resonant conversion technology.

It can be used for driving high-brightness LEDs with power factor correction in off-line applications.

Key Features

  • in the device include a rapid high voltage startup function and a 5V LDO output with a 1mA drive capability for external loads. There is also a linear dimming function to adjust the LED illumination level. The device also includes multiple protection features to protect it from fault conditions. These include under-voltage lockout, over-current protection, Vcc pin over-voltage protection and a ZCD pin overvoltage protection for the output voltage. Additionally, to ensure device reliability, ther.

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Full PDF Text Transcription for HT7L4661 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for HT7L4661. For precise diagrams, and layout, please refer to the original PDF.

HT7L4661 Active PFC Non-isolation Buck LED Lighting Driver With Dimming Function Feature • Non-isolation buck topology • Wide AC input range − from 85VAC to 265VAC • High...

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tion buck topology • Wide AC input range − from 85VAC to 265VAC • High Power Factor of >0.

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