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AT9932 - Automotive Boost-Buck LED Lamp Driver

General Description

The AT9932 is an advanced fixed-frequency PWM controller IC designed to control an LED lamp driver using a boost-buck topology that can step the input voltage up or down automatically.

The IC provides fast output current transient response and very low susceptibility to input voltage transients.

Key Features

  • Constant Output Current.
  • Steps Output Voltage Up or Down.
  • Very Low Susceptibility to Input Voltage Transients.
  • Frequency Jitter.
  • Externally Programmable Fixed Switching Frequency.
  • Temperature Foldback with External NTC Resistor.
  • Internal 40V Voltage Regulator.
  • +/.
  • 1A MOSFET Gate Driver.
  • Short LED Protection.
  • Open LED Protection.
  • Input Undervoltage Lockout Protection.
  • Enable and PWM.

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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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AT9932 Automotive Boost-Buck LED Lamp Driver IC Features • Constant Output Current • Steps Output Voltage Up or Down • Very Low Susceptibility to Input Voltage Transients • Frequency Jitter • Externally Programmable Fixed Switching Frequency • Temperature Foldback with External NTC Resistor • Internal 40V Voltage Regulator • +/–1A MOSFET Gate Driver • Short LED Protection • Open LED Protection • Input Undervoltage Lockout Protection • Enable and PWM Dimming • ±3% Accurate Trimmed Reference • AEC-Q100 Compliant Applications • Automobile Lighting • Battery-Powered LED Lamps • Other Low-Voltage AC/DC or DC/DC LED Drivers General Description The AT9932 is an advanced fixed-frequency PWM controller IC designed to control an LED lamp driver using a boost-buck topology that can step the input