Analog Devices Inc./Maxim Integrated MAX20031BATMF/V+

Overview

MAX20031BATMF/V+ from Analog Devices / Maxim Integrated is an automotive front-end power-supply IC combining dual synchronous step-down controllers, a synchronous boost controller, and a low-IQ LDO. The device is designed for cold-crank-ready vehicle modules that need two high-voltage buck rails, preboost support, and an auxiliary LDO from a 3.5V to 42V input system.

As part of the MAX20030-MAX20031 product family, MAX20031BATMF/V+ combines 2.2MHz dual buck-controller operation, preboost support for low battery input conditions, low quiescent current modes, spread-spectrum-capable EMI behavior, power-OK monitoring, overvoltage and undervoltage lockout, overtemperature protection, and a 48-pin TQFN package. For engineers reviewing the MAX20031BATMF/V+ datasheet, MAX20031BATMF/V+ pinout, MAX20031BATMF/V+ application, or MAX20031BATMF/V+ equivalent, this device is widely used in automotive infotainment modules, ADAS control units, telematics systems, body electronics, camera modules, and wide-input embedded vehicle power systems.

Technical Context

In automotive systems, MAX20031BATMF/V+ operates as a complete front-end power supply. The two synchronous buck controllers generate main regulated rails, while the preboost controller helps keep those rails in regulation during cold-crank input conditions.

The 3.5V to 42V input range supports vehicle battery environments, and the boost circuitry can support operation when battery voltage falls toward 2V. Resistor-programmable 220kHz to 2.2MHz switching lets designers balance AM-band avoidance, efficiency, passive size, and EMI behavior.

MAX20031BATMF/V+ is commonly used when a vehicle module needs low-IQ operation, cold-crank capability, a configurable LDO option, power-OK monitoring, and thermally enhanced 48-pin TQFN assembly.

Key Specifications

Pinout & Package

The MAX20031BATMF/V+ pinout includes high-voltage supply pins, gate-drive and switch-sense functions for the buck controllers, boost-controller pins, LDO input/output pins, frequency/synchronization pins, power-OK monitoring, enable controls, and exposed-pad ground.

For PCB design, buck and boost gate-drive loops should be short, current-sense and feedback traces should avoid switch-node noise, and the exposed pad should connect to thermal ground copper for automotive load and ambient conditions.

Key Features

• Dual buck controllers support mid- to high-power vehicle rails.
• Preboost controller maintains regulation during cold crank.
• Low-IQ states reduce module standby consumption.
• 220kHz to 2.2MHz frequency range supports EMI planning.
• Spread-spectrum capability helps reduce radiated emissions.
• Automotive TQFN package supports robust thermal design.

Applications

Equivalent & Alternatives

When evaluating a MAX20031BATMF/V+ equivalent, engineers should compare input range, cold-crank boost behavior, buck-controller count, LDO option, switching frequency, package, and automotive qualification.

Compared with MAX20031BATMF/V+, MAX20031BATMF/V+ should be selected when its selector-table option and adjustable 300mA LDO match the vehicle module design. MAX20031BATMF/V+ vs LT8645S selection depends on whether the system needs complete front-end dual-buck plus preboost integration or a simpler buck regulator.

Quality

MAX20031BATMF/V+ should be sourced as original Analog Devices / Maxim Integrated automotive components through traceable supply channels. Quality checks may include TQFN package inspection, top-mark validation, solderability testing, buck-controller verification, preboost operation, and LDO output testing.

Production validation should include cold-crank behavior, load-dump margin, EMI mode, low-IQ current, power-OK timing, thermal performance, and regulator stability across the automotive input range.

Availability

MAX20031BATMF/V+ available at Aetrix Electronics and is suitable for automotive infotainment, ADAS, telematics, body electronics, camera, and wide-input embedded vehicle power systems.

Supply support may include volume procurement planning, scheduled delivery arrangements, traceable sourcing management, and long-term supply support for OEM, industrial electronics, automotive electronics, and embedded product programs. Sample and NPI supply support, as well as urgent in-stock supply support, can also be arranged for prototype builds, pilot runs, and time-critical production needs.

For production builds, confirming selector-table option, package, automotive grade, rail-current budget, lifecycle status, lead time, and sourcing continuity helps reduce procurement risk.

Manufacturer

Analog Devices is a global semiconductor manufacturer specializing in analog ICs, power management, mixed-signal products, data converters, RF solutions, sensors, and embedded signal-chain technologies for industrial, communication, automotive, healthcare, and consumer applications. Maxim Integrated power-management products are now part of the Analog Devices portfolio.

The MAX20030-MAX20031 product family is an Analog Devices / Maxim automotive front-end power-supply series integrating dual synchronous buck controllers, a preboost controller, and low-IQ LDO options for cold-crank-ready vehicle modules.

FAQ

What is MAX20031BATMF/V+ used for?

MAX20031BATMF/V+ is used for automotive infotainment modules, ADAS controllers, telematics systems, body electronics, camera modules, and wide-input vehicle power systems.

Where can I find the MAX20031BATMF/V+ datasheet download?

The MAX20031BATMF/V+ datasheet is available from Analog Devices and includes selector-table options, electrical ratings, package information, and application circuits.

What should be considered in MAX20031BATMF/V+ pinout design?

Designers should keep gate-drive loops compact, route current-sense and feedback traces carefully, and connect the exposed pad to thermal ground copper.

Does MAX20031BATMF/V+ support cold-crank operation?

Yes. The preboost controller supports regulation during low battery input conditions.

What are common MAX20031BATMF/V+ equivalent solutions?

Common candidates include related MAX20030/MAX20031 orderable options and LT8645S depending on rail count, LDO option, cold-crank needs, and package.