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A4405 - Constant On-Time Buck Regulator

General Description

The A4405 is an automotive power management IC that uses a high frequency constant on-time 5.45 V pre-regulator to supply two internal 5 V linear

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.
  • 2.2 MHz constant on-time buck regulator.
  • Valley current sensing achieves shortest buck on-times.
  • 50 V absolute maximum input voltage for surges.
  • 5.5 to 46 V input voltage range.
  • 40ºC to 150ºC junction temperature range.
  • Powe.

📥 Download Datasheet

Datasheet Details

Part number A4405
Manufacturer Allegro Micro Systems
File Size 2.57 MB
Description Constant On-Time Buck Regulator
Datasheet download datasheet A4405 Datasheet

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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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A4405 Constant On-Time Buck Regulator With One 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 • 2.2 MHz constant on-time buck regulator • Valley current sensing achieves shortest buck on-times • 50 V absolute maximum input voltage for surges • 5.