Four-Phase Automotive LED Boost Driver


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ASL4500SHN Block Diagram

ASL4500SHN: Four-Phase Automotive LED Boost Driver


Key Features

  • The ASL4500SHN is an automotive grade product that is AEC-Q100 grade 1 qualified
  • Operating ambient temperature range of -40 °C to +125 °C
  • Wide operating input voltage range from +5.5 V to +40 V
  • Output voltage programmable via SPI interface
  • Multi-Phase Operation for higher power
  • Up to four phases per output
  • Up to two flexible output voltages with 3 % accuracy programmable via SPI
  • Both output voltages can be controlled independently
  • Fixed Frequency Operation via built-in oscillator
  • Slope Compensation tracks the frequency and output voltage
  • Programmable control loop compensation
  • Fast high-efficiency FET switching
  • Programmable Internal Gate Driver Voltage Regulator
  • Gate switching is halted when overvoltage on output is detected
  • Supports both Logic Level and Standard Level FETs
  • Low Electro Magnetic Emission (EME) and high Electro Magnetic Immunity (EMI)
  • Output Voltage Monitoring
  • Supply voltage measurement
  • Control Signal to Enable the Device
  • Read Back programmed voltage and frequency range via SPI
  • Junction Temperature monitoring via SPI
  • Small Package outline HVQFN32
  • Low Quiescent current <5 μA at 25 °C when EN = 0

Part numbers include: ASL4500SHN, ASL4501SHN.


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Design Resources


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