MAX20478BATBE/VY+T

Supervisors Overview

The MAX20478BATBE/VY+T is a 3-channel voltage supervisor IC manufactured by Analog Devices/Maxim Integrated. It monitors multiple power supply voltages and provides ASIL-D compliance for automotive safety applications. The device features a TDFN-10 package, operates within a temperature range of -40°C to +125°C, and supports input voltages up to 5.5V. It integrates watchdog timer functionality and is designed for robust power system monitoring in high-reliability environments.

Supervisors Feature Summary

• Provides ASIL-D compliant supervision for critical automotive power systems
• Monitors three independent voltage channels simultaneously
• Integrates watchdog timer for system fault detection
• Operates reliably across extended industrial temperature ranges

Supervisors Applications

• Automotive engine control units requiring ASIL-D certification
• Multi-rail power distribution networks in vehicles
• Safety-critical embedded systems monitoring
• Industrial power management architectures

Supervisors Procurement Notes

Verify the exact suffix VY+T against official Analog Devices documentation to confirm package type and tape/reel specifications. Confirm ASIL-D qualification status through certified datasheets. Check current availability as this component may have restricted supply conditions. Ensure compatibility with your PCB footprint for the TDFN-10 package before ordering.

Supervisors Selection Notes

Select this component when ASIL-D functional safety integrity is mandatory for power monitoring. Compare channel count requirements against simpler supervisors if fewer rails need monitoring. Evaluate thermal performance within the TDFN-10 package for your specific board layout. Consider the integrated watchdog feature versus external solutions for system complexity reduction.

Supervisors Part Context

This part belongs to the MAX20479 family of power system monitors, offering varying safety integrity levels. While the MAX20479AATBF/VY+T provides ASIL-B compliance, the MAX20478BATBE/VY+T delivers the higher ASIL-D rating required for more stringent automotive safety standards. Both share similar monitoring capabilities but differ in safety certification.

Supervisors Replacement Considerations

The MAX20479AATBF/VY+T serves as a lower-integrity alternative (ASIL-B) within the same family. Verify that the reduced safety classification meets your application's requirements before substitution. No other direct substitutes are confirmed in public documentation.