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ARG81800 - 40V 500mA / 1.0A Synchronous Buck Regulators

General Description

TheARG81800 includes all the control and protection circuitry to produce a PWM regulator with ±1.5% output voltage accuracy, with ultralow quiescent current to enable “keepalive” supply operation with minimal current draw from the supply during very light load regulation.

Key Features

  • Automotive AEC-Q100 qualified.
  • Input operating voltage range: 3.5 to 36 V.
  • Withstands surge voltages to 40 V for load dump.
  • Low-Power (LP) mode.
  • draws just 8 µA from VIN while maintaining 3.3 or 5.0 VOUT.
  • AUTO mode allows automatic transition between PWM and LP mode based on load current.
  • Programmable PWM frequency (fSW): 250 kHz to 2.4 MHz.
  • PWM frequency dithering and controlled switch node slew rate reduce EMI.

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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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ARG81800 40 V, 500 mA / 1.0 A Synchronous Buck Regulators with Ultralow Quiescent Current, SYNCIN, CLKOUT, and PGOOD FEATURES AND BENEFITS • Automotive AEC-Q100 qualified • Input operating voltage range: 3.5 to 36 V □□Withstands surge voltages to 40 V for load dump • Low-Power (LP) mode—draws just 8 µA from VIN while maintaining 3.3 or 5.0 VOUT • AUTO mode allows automatic transition between PWM and LP mode based on load current • Programmable PWM frequency (fSW): 250 kHz to 2.