MAX25249ATPAS/VY+

Overview

The MAX25249ATPAS/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, featuring overvoltage and undervoltage monitoring on all outputs. OUT1 is a 1A synchronous step-down converter operating from power-over-coax or car battery sources. OUT2 and OUT3 are low-voltage synchronous step-down converters providing 0.8V to 3.9875V ranges with up to 1.2A current capability. OUT4 is a low-noise LDO for imager power. The device supports 2.2MHz fixed-frequency PWM mode, programmable spread-spectrum frequency modulation, and factory-settable output voltages.

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 signaling
• Supports programmable spread-spectrum frequency modulation to minimize radiated electromagnetic emissions
• Factory-settable output voltages and sequencing control via EN23 and EN4 pins

Applications

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

Procurement Notes

Verify the specific suffix 'PAS' against official Analog Devices documentation, as standard listings typically reference 'TPC' or 'BATPA'. Confirm ASIL-B compliance status and AEC-Q100 qualification details directly with the manufacturer. Ensure the selected variant matches the required package type and factory-set voltage configurations for the target application.

Selection Notes

Select this component for applications requiring a small footprint multi-rail power solution for automotive imaging. The integrated high-frequency operation allows for the use of all ceramic capacitors, reducing external component count. Consider the 1.2A capability of OUT2 and OUT3 when powering high-speed serializers or secondary rails.

Part Context

This part belongs to the MAX25249/MAX25249B family of Mini PMICs. These devices are specifically engineered for automotive camera systems, offering ASIL-B ratings and operation across the -40°C to +125°C temperature range. The family simplifies design by replacing discrete solutions with an integrated power management block.

Replacement Considerations

The MAX25249BATPA/VY+ is a documented variant within the same family. Verify if the 'PAS' suffix denotes a specific tape-and-reel or packaging option rather than a functional difference.