MAX20478BATBG/VY+T

Supervisors Overview

The MAX20478BATBG/VY+T is an ASIL-D compliant, 2-3 channel power system monitor designed for automotive applications. It operates within a supply voltage range of 2.35 V to 5.5 V and functions reliably across an extended temperature range from -40°C to +125°C. The device integrates watchdog timer functionality and utilizes a compact 10-TDFN (3x3) surface-mount package. With a typical operating supply current of 125 µA, it supports critical monitoring tasks in high-reliability environments.

Supervisors Feature Summary

• Achieves Automotive Safety Integrity Level D (ASIL-D) compliance for functional safety requirements
• Monitors up to three independent power rails simultaneously
• Integrates a configurable watchdog timer for system fault detection

Supervisors Applications

• Automotive engine control units requiring ASIL-D supervision
• Multi-rail power distribution systems in vehicles
• Safety-critical embedded controller monitoring

Supervisors Procurement Notes

Verify the specific suffix configuration against the official datasheet to ensure correct pinout and feature set. Confirm RoHS compliance status and lead times directly with authorized distributors or Analog Devices, as availability may vary by region. Ensure the ordering part number matches the exact package and temperature grade required for your design.

Supervisors Selection Notes

Select this component when ASIL-D certification is mandatory for the power monitoring subsystem. Compare against the MAX20479AATBF/VY+T if ASIL-B compliance suffices for your application. Evaluate the 10-TDFN footprint constraints against available PCB real estate. Consider the 125 µA quiescent current impact on overall system power budget during active monitoring phases.

Supervisors Part Context

This supervisory circuit belongs to the Maxim Integrated automotive-grade PMIC portfolio, specifically engineered for robust power management in demanding vehicular environments. It complements other regulators and drivers within the same ecosystem, providing essential fault detection and system integrity verification for complex electronic architectures.

Supervisors Replacement Considerations

The MAX20479AATBF/VY+T serves as a verified alternative offering ASIL-B compliance. Verify that the reduced safety integrity level meets your specific project requirements before substitution.