MAX25249BATPB/VY+T

Overview

The MAX25249BATPB/VY+T is a four-output mini PMIC for camera applications, integrating three DC-DC converters and one high-PSRR LDO. It features a 1A high-voltage synchronous step-down converter (OUT1) operating from 4.5V to 36V. OUT2 and OUT3 are low-voltage synchronous step-down converters with adjustable outputs from 0.8V to 3.9875V, each delivering up to 1.2A. OUT4 is a low-noise LDO providing 3V to 5V at 1A. The device operates at a fixed 2.2MHz switching frequency, supports AEC-Q100 Grade 1 qualification, and functions within a -40°C to +125°C temperature range.

Feature Summary

• Integrates three synchronous buck converters and one high-PSRR LDO in a compact package
• Includes overvoltage and undervoltage monitoring on all outputs with error communication via RESET pin
• Features programmable spread-spectrum frequency modulation to minimize radiated electromagnetic emissions
• Compliant with ASIL-B safety ratings for automotive camera applications

Applications

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

Procurement Notes

Verify the specific suffix 'BATPB' against official Analog Devices documentation to confirm the exact output configuration, as variants like BATPE differ in topology. Confirm availability status directly with authorized distributors, as supply constraints may apply. Ensure the component meets RoHS3 compliance requirements for your manufacturing process. Validate that the 20-WETQFN package dimensions align with your PCB footprint design rules.

Selection Notes

Select this part when designing automotive camera systems requiring ASIL-B compliance and integrated power sequencing. Choose the BATPB variant specifically if the application requires three synchronous buck converters rather than four. Consider the 2.2MHz fixed-frequency operation for noise immunity and the use of all ceramic capacitors. Evaluate the 1.2A current capability of OUT2 and OUT3 against the power demands of high-speed serializers and imagers.

Part Context

This component belongs to the MAX25249 family of mini PMICs designed for automotive camera sensors. It consolidates multiple power rails into a single solution, reducing board space compared to discrete designs. The family includes variants such as MAX25249ATPC/VY+ and MAX25249BATPE/VY+T, which offer different output topologies while sharing similar automotive-grade reliability and interface characteristics.

Replacement Considerations

The MAX25249BATPE/VY+T is a related variant but differs in topology, featuring four synchronous buck converters instead of three. Verify functional equivalence carefully before substitution, as output configurations and current capabilities vary between these specific part numbers.