MAX25249ATPB/VY+

Overview

The MAX25249ATPB/VY+ is a high-efficiency, four-output Mini PMIC designed for automotive camera applications. It integrates three DC-DC converters and one high-PSRR LDO, featuring overvoltage and undervoltage monitoring on all outputs. The device operates from an input voltage range of 4.5V to 36V. Output 1 provides up to 1A from the primary rail, while Outputs 2 and 3 deliver up to 1.2A each with adjustable voltages between 0.8V and 3.9875V. Output 4 supplies low-noise power for imagers. All buck converters maintain ±1.5% output accuracy across load, line, and temperature variations.

Feature Summary

• Integrates three synchronous step-down converters and one high-PSRR LDO in a compact form factor
• Provides comprehensive fault monitoring including overvoltage and undervoltage detection with reset signaling
• Features programmable spread-spectrum frequency modulation to minimize radiated electromagnetic emissions
• Compliant with ASIL-B safety ratings for automotive functional safety requirements

Applications

• Surround-view cameras
• Rear-view cameras
• High-megapixel camera systems

Procurement Notes

Verify the specific suffix 'TPB' against official Analog Devices documentation, as standard listings typically reference 'ATPC' or 'BATPA'. Confirm current availability status directly with the manufacturer or authorized distributors, as supply constraints may apply to this specific variant. Ensure the package type matches the required PCB layout specifications before ordering.

Selection Notes

Select this component when designing automotive imaging systems requiring integrated power management with ASIL-B compliance. The fixed 2.2MHz switching frequency supports the use of all ceramic capacitors, reducing external component count. Verify that the required output currents and voltage ranges align with the sensor and serializer specifications to ensure optimal efficiency and thermal performance.

Part Context

This part belongs to the MAX25249 family of Mini PMICs developed by Maxim Integrated, now part of Analog Devices. These devices are engineered specifically for high-performance automotive camera modules, combining multiple power rails into a single solution to save board space. The family includes variants with different factory-settable output voltages and pin configurations to accommodate diverse image sensor architectures.

Replacement Considerations

The MAX25249BATPA/VY+ is a documented alternative within the same product family. Verify pin compatibility and factory-set voltage configurations before substitution. Both parts share the same core topology and ASIL-B rating.