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MAX25254AFDC is small, synchronous dual buck converters with integrated high-side and lowside switches. The ICs are designed to deliver up to 8A per channel with input voltages from 3V to 36V while using only 12μA quiescent current at no load. Voltage quality can be monitored by observing the PGOOD signals. The MAX25254/MAX25255 can regulate the output voltage in the dropout region by running at 99% of the duty cycle, making them ideal for automotive and industrial applications.

Features Of MAX25254AFDC

Dual Buck Converter

Wide Input Range from 3.0V to 36V (42V, max)

Low Shutdown Supply Current (6.5µA, max)

Low Operating Quiescent Current with One Channel ON (12µA, typ)

Programmable VOUT from 0.8V to 14V

Up to 8A per Channel

180° Out-of-Phase Operation between Two Converters

24ns (typ) Minimum On-Time

Dual/Quad-Phase Operation

Ability to Operate Two ICs in Parallel for Quad-Phase Operation

±10% Current Sharing Accuracy

Supports up to 16A in Dual-Phase and 32A in QuadPhase

Diagnostics and Redundant Circuits (MAX25255)

ASIL B Compliant

Redundant Reference

Die Temperature Monitor

Precision Overvoltage and Undervoltage Protection

General

23-Pin, 4.50mm x 5.75mm FC2QFN Package

-40°C to +125°C Operating Ambient Temperature

AEC-Q100 Rating

200kHz, 400kHz, 1MHz, or 2MHz Switching Frequency Options

Spread Spectrum

Applications Of MAX25254AFDC

Front-End Power Supply for Head Units

ASIL Applications

General-Purpose Dual Buck Converters

Telematics Modules

Front Camera Power

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