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A4406

Part Number	A4406
Manufacturer	Allegro Micro Systems
Description	Constant On-Time Buck Regulator
Published	Aug 26, 2017
Detailed Description	A4406 Constant On-Time Buck Regulator With One External and One Internal Linear Regulator Features and Benefits • AEC-Q...
Datasheet	A4406 PDF File

Overview

A4406 Constant On-Time Buck Regulator With One External and One Internal Linear Regulator 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 • 50 V absolute maximum input voltage for surges • Valley current sensing achieves shortest buck on-times • 5.
5 to 46 V input voltage range • −40ºC to 150ºC junction temperature range • Power-on reset (NPOR pin) with adjustable rising delay • 5 V (V5P pin) internal low dropout tracking linear regulator with both overcurrent foldback and short-to-battery protection • 3.
3 V (V33 pin) external linear regulator DMOS driver with a programmable current limit (up to 500 mA) and Continued on the next page… Package: 20-pin TSSOP with exposed thermal pad (suffix LP) Not to scale Description The A4406 is an automotive power ma...

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