MAX25249BATPJ/VY+T

Overview

The MAX25249BATPJ/VY+T is a four-output mini PMIC designed for automotive camera applications, compliant with ASIL-B safety ratings. It integrates three synchronous step-down DC-DC converters and one low-noise LDO. The device operates from an input voltage range of 4.5V to 36V. Output 1 provides up to 1A at 3V to 5V. Outputs 2 and 3 deliver up to 1.2A each within a 0.8V to 3.9875V adjustable range. Output 4 is a dedicated LDO for imager power. The IC utilizes a 2.2MHz fixed-frequency PWM mode and features programmable spread-spectrum frequency modulation to minimize radiated electromagnetic emissions.

Feature Summary

• Integrates three high-efficiency synchronous buck converters and one high-PSRR LDO in a compact package.
• Includes overvoltage and undervoltage monitoring on all outputs with error communication via the RESET pin.
• Features factory-settable output voltages and programmable sequencing through EN23 and EN4 pins.
• Supports automotive-grade operation with ASIL-B compliance and integrated soft-start protection.

Applications

• Surround-view camera systems
• Rear-view camera modules
• High-megapixel camera sensors
• Camera serializers and MCUs

Procurement Notes

Verify the specific suffix PJ against official Analog Devices documentation to confirm pinout and functional variations compared to other variants like PC or PB. Ensure the component meets the required ASIL-B safety integrity level for the target automotive application. Confirm availability status directly with the manufacturer as supply constraints may apply to this specific part number.

Selection Notes

Select this component when designing camera power supplies requiring ASIL-B certification and minimal board space. The integrated topology reduces external component count compared to discrete solutions. Verify that the 2.2MHz switching frequency aligns with EMI requirements and that the available output currents meet the load demands of the image sensor and serializer stages.

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 the stringent size and efficiency requirements of modern automotive imaging systems. The family shares common architectural features but varies in output configurations and packaging options to suit different sensor interfaces.

Replacement Considerations

Consult the official datasheet for confirmed substitute part numbers within the MAX25249 series. Variants such as MAX25249BATPE/VY+T or MAX25249BATPB/VY+T may offer similar functionality but differ in output topologies or packaging. Do not assume interchangeability without verifying electrical parameters and pin compatibility.