MAX25249ATPN/VY+

Overview

The MAX25249ATPN/VY+ is a high-voltage, ASIL-B qualified mini Power Management IC (PMIC) designed for automotive camera sensors. It integrates four outputs: three synchronous buck converters and one low-dropout linear regulator (LDO). The device operates with an input voltage range of 4.5 V to 36 V. Output 1 provides 1 A current capability with a voltage range of 3 V to 4 V in 50 mV steps. Outputs 2 and 3 deliver up to 1.2 A each, adjustable from 0.8 V to 3.9875 V. The switching frequency is fixed at 2.2 MHz. It is housed in a 20-pin WETQFN package rated for -40°C to 125°C.

Feature Summary

• ASIL-B functional safety compliance for automotive camera applications
• Integrated topology combining three synchronous buck converters and one LDO
• High input voltage tolerance supporting wide automotive supply ranges
• Compact footprint utilizing a wettable flank QFN package

Applications

• Automotive camera sensor power management
• ADAS vision system power distribution
• In-vehicle imaging module regulation

Procurement Notes

Verify the specific suffix 'PN' against the official datasheet to confirm pinout and thermal pad configuration. Ensure the ASIL-B designation aligns with your system's safety integrity level requirements. Confirm RoHS3 compliance status for environmental regulations. Check for available EDA models for PCB layout validation prior to procurement.

Selection Notes

Select this component when designing for automotive cameras requiring integrated buck and LDO regulation within a small form factor. The 2.2 MHz switching frequency allows for smaller external passive components compared to lower-frequency alternatives. Verify that the 1 A and 1.2 A output currents meet the peak load demands of the target image sensor. Consider the 36 V maximum input rating for systems with potential load dump conditions.

Part Context

This part belongs to the MAX25249 family of mini PMICs developed by Analog Devices/Maxim Integrated. It is specifically engineered for high-reliability automotive environments. The family includes variants such as the MAX25249BATPF/VY+, which may differ in output configurations or input voltage specifications. These devices address the trend toward integrating multiple power rails into single packages to save board space in compact automotive modules.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate the MAX25249BATPF/VY+ only if its specific output topology matches the design requirements, noting potential differences in input voltage ranges or output current capabilities.