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HV9918 - High Brightness LED Driver

General Description

The HV9918 is a PWM controller IC designed to drive high brightness LEDs using a buck topology.

It operates from an input voltage of 4.5 to 40VDC and employs hysteretic control with a high-side current sense resistor to set the constant output current up to 700mA.

Key Features

  • Hysteretic control with high-side current sensing Integrated 40V 1.0Ω MOSFET >90% Efficiency Wide input voltage range: 4.5 to 40V ±5% LED current accuracy Up to 2.0MHz switching frequency Adjustable constant LED current Analog or PWM control signal for PWM dimming Over-temperature protection -40ºC to +125ºC operating temperature range General.

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Datasheet Details

Part number HV9918
Manufacturer Supertex
File Size 501.81 KB
Description High Brightness LED Driver
Datasheet download datasheet HV9918 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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HV9918 Hysteretic, Buck, High Brightness LED Driver with High-Side Current Sensing Features ► ► ► ► ► ► ► ► ► ► Hysteretic control with high-side current sensing Integrated 40V 1.0Ω MOSFET >90% Efficiency Wide input voltage range: 4.5 to 40V ±5% LED current accuracy Up to 2.0MHz switching frequency Adjustable constant LED current Analog or PWM control signal for PWM dimming Over-temperature protection -40ºC to +125ºC operating temperature range General Description The HV9918 is a PWM controller IC designed to drive high brightness LEDs using a buck topology. It operates from an input voltage of 4.5 to 40VDC and employs hysteretic control with a high-side current sense resistor to set the constant output current up to 700mA.