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A4407

Part Number	A4407
Manufacturer	Allegro Micro Systems
Description	2.2 MHz Constant On-Time Buck Regulator
Published	Aug 26, 2017
Detailed Description	A4407 2.2 MHz Constant On-Time Buck Regulator With Two External and Two Internal Linear Regulators Features and Benefit...
Datasheet	A4407 PDF File

Overview

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.
8 V external FET controller/driver with programmable current limit and foldback protection • Power-on reset (NPOR) with adjustable rising delay • Logic enable input (ENB) for micropr...

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