Automotive 2A Buck-Boost/Buck LED Driver with Wide Input Voltage and Adjustable Frequency

ALT80802

ALT80802 Package Image

The ALT80802 offers a versatile and robust solution for automotive LED lighting, supporting both buck and buck-boost topologies, a wide input voltage range (3.8V-50V), and adjustable switching frequency.

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Top Features

Packaging

  • AEC-Q100 qualified—Automotive-Grade; Facilitates system level certification
  • Simple operation—Same PN can be in buck-boost or buck mode
  • Supply voltage from 3.8 to 50 V
  • Handles automotive load dump and cold crank
  • Can be run in buck mode from a pre-boost supply
  • Supports up to 16 V output in buck-boost mode
  • Addresses automotive market need for 3-4 WLED solution
  • 150 mΩ integrated MOSFET switch
  • Supports up to ~2A in buck mode and ~750mA in buck-boost (Vinmin dependent)
  • Programmable switching frequency up to 2.5 MHz, with frequency dithering
  • Designed for low EMC
  • Operation can be above AM band
  • Small solution size
  • Integrated level shifting
  • Allows ground-referenced enable and fault flag in buck-boost mode
  • PWM dimming via direct logic input or power supply voltage
  • Supports all automotive PWM techniques including “single-wire”
  • Extensive protection and fault table
  • Robust, does not require extra protection components
  •  3x3mm DFN-10 wettable flank exposed pad package
  • Small yet thermally efficient
  • Wettable flank eliminates need for x-ray inspection

Part Number Specifications and Availability

Documentation and Resources

Documentation

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