A4405 - Constant On-Time Buck Regulator

Allegro Micro Systems

The A4405 by Allegro Micro Systems is a Constant On-Time Buck Regulator. Below is the official datasheet preview.

Datasheet Details

Part number	A4405
Manufacturer	Allegro Micro Systems
File Size	2.57 MB
Description	Constant On-Time Buck Regulator
Datasheet	A4405-AllegroMicroSystems.pdf
Additional preview pages of the A4405 datasheet.

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

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.

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Published: Aug 26, 2017 |