MAX25249ATPA/VY+

Overview

The MAX25249ATPA/VY+ is a high-efficiency, four-output Mini PMIC designed for automotive camera applications. It integrates three DC-DC converters and one LDO, operating from an input voltage range of 4.5V to 36V. The device features a 1A synchronous step-down converter (OUT1) and two low-voltage synchronous step-down converters (OUT2, OUT3) with adjustable output voltages from 0.8V to 3.9875V. OUT4 provides a low-noise LDO output. All outputs include overvoltage and undervoltage monitoring with ±1.3% accuracy. The IC operates at a fixed 2.2MHz frequency with programmable spread-spectrum modulation.

Feature Summary

• Integrates three synchronous buck converters and one high-PSRR LDO in a compact package
• Provides comprehensive fault monitoring including overvoltage and undervoltage detection on all outputs
• 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 camera systems
• Rear-view camera modules
• High-megapixel automotive imaging sensors
• Camera serializers and MCU power rails

Procurement Notes

Verify the specific suffix 'ATPA/VY+' against the official Analog Devices datasheet to confirm pinout, thermal pad configuration, and factory-settable voltage options. Ensure the component meets AEC-Q100 qualification standards required for automotive environments. Confirm availability status as supply constraints may apply to this specific variant.

Selection Notes

Select this PMIC when designing space-constrained automotive camera boards requiring integrated power sequencing and noise-sensitive LDO regulation. The 2.2MHz switching frequency allows for smaller external passive components compared to lower-frequency alternatives. Verify that the 1.2A current capability of OUT2/OUT3 matches the load requirements of the target image sensor or serializer.

Part Context

This component belongs to the MAX25249/MAX25249B family of Mini PMICs specifically engineered for automotive vision systems. It consolidates multiple discrete power stages into a single 20-pin TQFN-CU package, reducing board area and simplifying layout. The family supports various image sensor configurations through programmable sequencing and factory-set voltage options.

Replacement Considerations

The MAX25249BATPA/VY+ is a documented variant within the same product family offering similar functionality.