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A4407 - 2.2 MHz Constant On-Time Buck Regulator

Key Features

  • AEC-Q100 Grade 0 qualified.
  • Internal buck pre-regulator followed by LDO outputs.
  • 5.5 to 36 V VIN operating range (50 V maximum); for start/stop, cold crank, and load dump requirements.
  • Constant on-time (COT) buck pre-regulator.
  • Valley current sensing achieves shortest buck on-times.
  • 2.2 MHz (VIN - adjusted) switching frequency.
  • 5 V internal low-dropout tracking linear regulator with foldback short circuit and short-to-battery protec.

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Datasheet Details

Part number A4407
Manufacturer Allegro Micro Systems
File Size 2.78 MB
Description 2.2 MHz Constant On-Time Buck Regulator
Datasheet download datasheet A4407 Datasheet

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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A4407 2.2 MHz Constant On-Time Buck Regulator With Two External and Two Internal Linear Regulators Features and Benefits • AEC-Q100 Grade 0 qualified • Internal buck pre-regulator followed by LDO outputs • 5.5 to 36 V VIN operating range (50 V maximum); for start/stop, cold crank, and load dump requirements • Constant on-time (COT) buck pre-regulator • Valley current sensing achieves shortest buck on-times • 2.2 MHz (VIN - adjusted) switching frequency • 5 V internal low-dropout tracking linear regulator with foldback short circuit and short-to-battery protections • 5 V internal low-dropout linear regulator with foldback short circuit protection • 3.3 V external FET controller/driver with programmable current limit and foldback short circuit protection • 1.2 V/1.5 V/1.