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A4409 - Adjustable Frequency Buck or Buck-Boost Pre-Regulator

Allegro Micro Systems

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Datasheet Details

Part number	A4409
Manufacturer	Allegro Micro Systems
File Size	1.40 MB
Description	Adjustable Frequency Buck or Buck-Boost Pre-Regulator
Datasheet	A4409-AllegroMicroSystems.pdf

A4409 Product details

Features

Automotive AEC-Q100 qualified.
VIN operating range from 3 to 36 V, with 40 V maximum.
Buck or buck-boost pre-regulator (VREG).
Adjustable PWM switching frequency: 250 kHz to 2.4 MHz.
PWM frequency can be synchronized to external clock.
Two 5 V internal LDO regulators with foldback short- circuit protection.
Power-on reset (NPOR) with fixed delay of 22.5 ms.
Programmable window watchdog timer with a fixed activation.

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A4408 - Adjustable Frequency Buck or Buck-Boost Pre-Regulator

Published: Aug 26, 2017 |