MAX25249BATPF/VY+T

Overview

The MAX25249BATPF/VY+T is a four-output mini PMIC for camera applications, integrating three DC-DC converters and a high-PSRR LDO. It features one 1A high-voltage synchronous step-down converter (OUT1) operating from 4.5V to 36V input. Two low-voltage synchronous step-down converters (OUT2, OUT3) provide 0.8V to 3.9875V output at 1.2A each. The fourth output is a low-noise LDO. All buck converters achieve ±1.5% accuracy over load, line, and temperature ranges. The device 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 overvoltage and undervoltage fault monitoring on all outputs with reset communication
• Features programmable spread-spectrum frequency modulation to minimize radiated electromagnetic emissions
• Compliant with ASIL-B ratings and specified for automotive temperature range operation

Applications

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

Procurement Notes

Verify the specific suffix 'PF' against official Analog Devices documentation, as standard listings typically show 'PE' or 'PB'. Confirm availability status directly with the manufacturer or authorized distributors, as supply constraints may apply. Ensure the ordering part number matches the exact pinout and configuration requirements for the target application design.

Selection Notes

Select this component when designing automotive camera systems requiring ASIL-B compliance. Choose based on the need for integrated sequencing via EN23 and EN4 pins. Consider the 2.2MHz switching frequency for noise immunity and the use of all ceramic capacitors. Verify that the 1A and 1.2A output current capabilities meet the power requirements of the imager, serializer, and MCU secondary rails.

Part Context

This part belongs to the MAX25249/MAX25249B family of mini PMICs designed specifically for camera applications. These devices are engineered to replace discrete solutions, offering improved efficiency and simplified layout through integrated low RDS(ON) switches. The family supports various automotive image sensor configurations with factory-settable output voltages and robust protection features.

Replacement Considerations

MAX25249BATPE/VY+T

FAQ

How does the device handle output voltage accuracy?

All buck converters achieve ±1.5% output voltage accuracy over the full load, line, and temperature range.

What protection features are included?

The device includes soft-start, overcurrent, and overtemperature protections, along with overvoltage and undervoltage fault monitoring on all outputs.