MAX20478BATBA/VY+T

Supervisors Overview

The MAX20478BATBA/VY+T is an ASIL-D certified power system monitor designed for automotive applications. It supports a supply voltage range of 2.35V to 5.5V and features two independent voltage monitoring inputs. The device provides configurable outputs for fault signaling and integrates a watchdog timer for system reliability. Packaged in a TDFN-10 surface-mount case, it operates within a temperature range of -40°C to +125°C.

Supervisors Feature Summary

• ASIL-D functional safety certification for critical automotive power systems
• Dual-channel voltage monitoring with configurable thresholds
• Integrated watchdog timer for system reset management

Supervisors Applications

• Automotive engine control units (ECUs)
• ADAS sensor power distribution networks
• Infotainment system power supervision

Supervisors Procurement Notes

Verify the specific suffix VY+T against the official Analog Devices datasheet to confirm package type and tape-and-reel specifications. Ensure the ASIL-D designation aligns with your system's safety integrity level requirements before integration. Cross-reference the TDFN-10 footprint dimensions with your PCB layout guidelines.

Supervisors Selection Notes

Select this component when ASIL-D compliance is mandatory for power monitoring functions. Compare input channel count and threshold precision against simpler ASIL-B alternatives like the MAX20479 if safety requirements are less stringent. Evaluate thermal performance within the TDFN-10 package for high-temperature automotive environments.

Supervisors Part Context

This part belongs to the Maxim Integrated automotive supervisory circuit family, engineered for high-reliability power management. It complements other PMIC solutions by providing dedicated safety monitoring capabilities. The series targets complex automotive architectures requiring robust fault detection and system reset mechanisms under strict safety standards.

Supervisors Replacement Considerations

The MAX20479AATBF/VY+T serves as a related alternative but offers ASIL-B certification rather than ASIL-D. Verify that the reduced safety integrity level meets your application's functional safety goals before substitution.