MAX20478BATBF/VY+

Supervisors Overview

The MAX20478BATBF/VY+ is an ASIL-D compliant power system monitor featuring two to three independent channels. It operates within a supply voltage range of 1.65 V to 5.5 V and supports a watchdog timer with programmable timeout intervals. The device integrates voltage supervisors for input rails, battery backup, and reset outputs. It functions reliably across an extended industrial temperature range from -40°C to +125°C. The component is housed in a compact 10-TDFN (3x3 mm) surface-mount package designed for automotive safety applications.

Supervisors Feature Summary

• Achieves Automotive Safety Integrity Level D (ASIL-D) certification for functional safety compliance
• Provides multi-channel supervision including voltage monitoring and configurable watchdog timer
• Supports flexible reset output configurations with open-drain or open-collector options

Supervisors Applications

• Automotive engine control units requiring ASIL-D power supervision
• Advanced driver-assistance systems (ADAS) power management
• Safety-critical vehicle body electronics monitoring

Supervisors Procurement Notes

Verify the specific suffix 'VY+' against official Analog Devices documentation to confirm pinout and thermal pad specifications. Confirm ASIL-D qualification status through certified datasheets. Check current availability as distribution may be limited. Ensure the supplier provides traceability documents consistent with automotive grade requirements.

Supervisors Selection Notes

Select this component when ASIL-D compliance is mandatory for the power monitoring subsystem. Compare channel count requirements against the available two or three channel variants. Evaluate the TDFN package dimensions against board space constraints. Verify that the operating temperature range meets the specific environmental conditions of the target application.

Supervisors Part Context

This part belongs to the MAX20478 series of power system monitors designed for high-reliability environments. It complements other Maxim Integrated supervisory circuits by offering integrated safety features. The series targets automotive markets where functional safety standards are strictly enforced. It serves as a critical component for ensuring system integrity during power fluctuations.

Supervisors Replacement Considerations

The MAX20479AATBF/VY+ is a related variant within the same family. Verify compatibility regarding ASIL rating and channel configuration before substitution. Cross-reference pinouts and electrical characteristics to ensure direct interchangeability without circuit redesign.