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If you consider in designing a LED lamp driver using a low noise boost buck topology to control the application, you may use the HV9930 from Supertex. It can be applied to RGB backlight applications, battery powered LED lamps, and other low voltage AC/DC or DC/DC LED drivers.
the AT9933 LED driver IC is typically ideal for automotive LED lamps since this IC has features such as Constant current LED Driver, Ambient temperature rating up to 125°C, Meets AEC-Q100 requirements, Input and output current sensing, Enable & PWM dimming, Internal 75V linear regulator, Steps input voltage up or down and low EMI.
This article may be useful for you in the terms of selecting HB LED driver for Automotive Lighting Applications since it reviews HB LED driver topologies and recommends configurations for various automotive lighting including dome lighting, daytime running lights (DRL), rear combination lights (RCL), fog lamps, and low-/high-beam lights.
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