Analog Devices Inc./Maxim Integrated MAX25249ATPN/VY+

Overview

MAX25249ATPN/VY+ from Analog Devices / Maxim Integrated is a four-output mini PMIC for automotive camera power systems. The device integrates a 1A high-voltage synchronous buck converter, two 1.2A low-voltage synchronous buck converters, and a high-PSRR LDO so automotive sensor pods can generate regulated sensor, imager, and logic rails from a compact 20-pin wettable-flank package.

As part of the MAX25249 product family, MAX25249ATPN/VY+ combines 5V to 36V high-voltage input support, 2.2MHz forced-PWM operation, factory-set output voltages, OV/UV monitoring, RESET fault reporting, spread-spectrum EMI support, ASIL B compliance, and AEC-Q100 automotive qualification. For engineers reviewing the MAX25249ATPN/VY+ datasheet, MAX25249ATPN/VY+ pinout, MAX25249ATPN/VY+ application, or MAX25249ATPN/VY+ equivalent, this device is widely used in surround-view cameras, rear-view cameras, ADAS vision modules, power-over-coax camera links, serializer power trees, and distributed ADAS sensing nodes.

Technical Context

In automotive camera modules, MAX25249ATPN/VY+ uses OUT1 as the high-voltage buck stage that can operate from power-over-coax or vehicle battery inputs across a 5V to 36V range. OUT1 supplies the internal low-voltage buck input path and can be configured in the datasheet output range or fixed 5V option.

OUT2 and OUT3 are low-voltage synchronous buck regulators rated up to 1.2A each, supporting imager, serializer, microcontroller, memory, or secondary digital rails from 0.8V to 3.9875V. OUT4 is a low-noise LDO intended for camera-sensor supply filtering, with high PSRR helping reduce image-chain noise.

MAX25249ATPN/VY+ is commonly used when distributed ADAS sensing nodes needs 2.2MHz switching, ceramic-capacitor power stages, sequenced EN23 and EN4 startup control, RESET-based fault reporting, overvoltage and undervoltage monitoring, and a wettable-flank package for automated automotive inspection.

Key Specifications

Pinout & Package

The MAX25249ATPN/VY+ pinout includes the high-voltage buck input and switch node, low-voltage buck switch nodes, OUT1/OUT2/OUT3 feedback or sense functions, OUT4 LDO output, EN23 and EN4 sequencing pins, RESET fault output, and exposed thermal ground.

For PCB design, the OUT1 high-voltage buck loop should be compact, OUT2 and OUT3 inductor paths should be separated from sensitive imager traces, the LDO output capacitor should be close to OUT4, and RESET/enable routing should avoid switch-node noise.

Key Features

• Four regulated outputs support complete automotive camera power trees.
• 5V to 36V OUT1 input range supports power-over-coax and vehicle battery rails.
• Two 1.2A low-voltage bucks supply serializer, MCU, and imager support rails.
• High-PSRR LDO improves camera sensor supply noise performance.
• 2.2MHz forced-PWM operation reduces passive size and supports EMI planning.
• OV/UV monitoring, RESET reporting, ASIL B compliance, and AEC-Q100 qualification support automotive design reviews.

Applications

Equivalent & Alternatives

When evaluating a MAX25249ATPN/VY+ equivalent, engineers should compare OUT1 input range, buck output currents, LDO noise and PSRR, reset output style, output-voltage option, ASIL documentation, AEC-Q100 grade, and package.

Compared with MAX25250ATPA/VY+, MAX25249ATPN/VY+ provides the MAX25249/MAX25249B 36V high-voltage buck input capability for wider power-over-coax or battery-margin designs. MAX25249ATPN/VY+ vs MAX20049ATED/VY+ selection depends on whether the camera module needs three buck rails plus one LDO, or a smaller dual-buck and dual-LDO rail structure.

Quality

MAX25249ATPN/VY+ should be sourced as original Analog Devices / Maxim Integrated components through traceable supply channels. Quality checks may include wettable-flank TQFN inspection, top-mark validation, solderability testing, output-voltage verification, RESET fault testing, and AEC-Q100 documentation review.

Production validation should include OUT1 startup from the vehicle or coax input, OUT2/OUT3 transient response, OUT4 noise performance, OV/UV threshold behavior, RESET timing, spread-spectrum EMI behavior, thermal rise, and short-circuit protection.

Availability

MAX25249ATPN/VY+ available at Aetrix Electronics and is suitable for automotive camera, ADAS, surround-view, rear-view, serializer, power-over-coax, and compact embedded vision-module 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 suffix-coded output voltages, reset-output option, wettable-flank package, ASIL documentation, lifecycle status, lead time, and sourcing continuity helps reduce procurement risk.

Manufacturer

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

The MAX25249/MAX25249B product family is an Analog Devices / Maxim four-output automotive camera PMIC series integrating a high-voltage buck, two low-voltage buck regulators, a high-PSRR LDO, sequencing, RESET fault reporting, OV/UV monitoring, ASIL B compliance, and AEC-Q100 qualification.

FAQ

What is MAX25249ATPN/VY+ used for?

MAX25249ATPN/VY+ is used for surround-view cameras, rear-view cameras, ADAS vision modules, power-over-coax camera links, serializer supplies, and compact automotive camera ECUs.

Where can I find the MAX25249ATPN/VY+ datasheet download?

The MAX25249ATPN/VY+ datasheet is available from Analog Devices and covers the MAX25249/MAX25249B four-output camera PMIC family, electrical specifications, pin functions, monitoring behavior, and package data.

What should be considered in MAX25249ATPN/VY+ pinout design?

Designers should keep each buck loop compact, isolate switch-node copper from image-sensor routing, place the OUT4 LDO capacitor close to the device, and connect the exposed pad to thermal ground.

How many outputs does MAX25249ATPN/VY+ provide?

It provides four outputs: one high-voltage synchronous buck, two low-voltage synchronous bucks, and one high-PSRR LDO.

What are common MAX25249ATPN/VY+ equivalent solutions?

Common candidates include MAX25250ATPA/VY+ and MAX20049ATED/VY+ depending on input-voltage range, rail count, package, output-voltage option, and camera-module architecture.