MAX25249BATPD/VY+

Overview

The MAX25249BATPD/VY+ is a high-efficiency, four-output mini PMIC designed for automotive camera applications. It integrates three DC-DC converters and a high-PSRR LDO with overvoltage/undervoltage monitoring on all outputs. OUT1 is a 1A synchronous step-down converter operating from 4.5V to 36V. OUT2 and OUT3 are low-voltage synchronous step-down converters providing 0.8V to 3.9875V output voltage ranges. OUT4 is a low-noise LDO for imager power. The device features a 2.2MHz fixed-frequency PWM mode, programmable spread-spectrum frequency modulation, and ±1.5% output voltage accuracy. It operates within the -40°C to +125°C temperature range and holds ASIL-B compliance.

Feature Summary

• Integrates three synchronous buck converters and one high-PSRR LDO in a compact form factor
• Provides comprehensive fault monitoring including overvoltage and undervoltage detection with reset communication
• Features programmable spread-spectrum frequency modulation to minimize radiated electromagnetic emissions
• Supports flexible sequencing through EN23 and EN4 pins and factory-settable output voltages

Applications

• Surround-view cameras
• Rear-view cameras
• High-megapixel camera systems
• Image sensor power supplies

Procurement Notes

Verify the specific suffix 'PD' against official Analog Devices documentation, as standard listings typically utilize 'PA' or 'PF'. Confirm availability status directly with the manufacturer or authorized distributors, as supply constraints may apply. Ensure the package type matches the required PCB footprint before ordering.

Selection Notes

Select this component for automotive camera designs requiring integrated power management with ASIL-B safety ratings. The wide input voltage range supports direct connection to car batteries or Power Over Coax sources. Evaluate the 2.2MHz switching frequency for EMI performance and external component size requirements relative to discrete solutions.

Part Context

This part belongs to the MAX25249/MAX25249B family of mini PMICs optimized for camera sensors. These devices replace multiple discrete components, reducing board space and improving efficiency. The family is characterized by high integration, automotive qualification, and specialized features for powering image sensors and serializers.

FAQ

What is the maximum current capability of the OUT2 and OUT3 converters?

OUT2 and OUT3 can each deliver up to 1.2A, supporting high-megapixel cameras and high-speed serializers.

How does the device manage electromagnetic interference (EMI)?

It utilizes a 2.2MHz fixed-frequency PWM mode and programmable spread-spectrum frequency modulation to minimize radiated emissions.