A4406 Datasheet Constant On-Time Buck Regulator

Manufacturer: Allegro Micro Systems

A4406 constant on-time buck regulator by Allegro Micro Systems - Datasheet Preview

Datasheet Details

Part number	A4406
Manufacturer	Allegro Micro Systems
File Size	3.22 MB
Description	Constant On-Time Buck Regulator
Datasheet	A4406 Datasheet

General Description

The A4406 is an automotive power management IC that uses a high frequency constant on-time 5.45 V pre-regulator to supply an internal 5 V linear regulator and a 3.3 V linear DMOS driver.

Designed to supply CAN and microprocessor power supplies in high temperature environments, the A4406 is ideal for under hood applications.

Efficient operation is achieved by using a buck pre-regulator to efficiently drop the input voltage before supplying the linear regulators;

Overview

A4406 Constant On-Time Buck Regulator with External and Internal 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.
50 V absolute maximum input voltage for surges.
Valley current sensing achieves shortest buck on-times.
5.5 to 46 V input voltage range.
40°C to 150°C junction temperature range.
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