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Part Number
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HV9918 |
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Manufacturer
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Supertex |
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Description
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High Brightness LED Driver |
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Published
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Jan 18, 2010 |
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Detailed Description
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HV9918 Hysteretic, Buck, High Brightness LED Driver with High-Side Current Sensing
Features
► ► ► ► ► ► ► ► ► ► Hysteret...
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Datasheet
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HV9918
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Overview
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 con...
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