LTC2911HDDB-3

Supervisors Overview

The LTC2911HDDB-3 is a precision triple supply monitor featuring a power-fail comparator, manufactured by Analog Devices Inc. It operates with an ultralow voltage reset capability down to VCC = 0.5V and simultaneously monitors three inputs within the 1.1V to 5V range. The device utilizes a DFN-8 surface-mount package and draws only 10 uA of operating supply current. Designed for robust power-system supervision in safety-critical automotive applications, it ensures reliable voltage monitoring with factory-set thresholds.

Supervisors Feature Summary

• Ultralow voltage reset operation starting at 0.5V
• Simultaneous monitoring of three independent input voltages
• Integrated power-fail comparator functionality
• Factory-set reset threshold for voltages between 1.1V and 5V

Supervisors Applications

• Safety-critical automotive power system supervision
• Multi-rail voltage monitoring in embedded systems
• Power-fail detection in industrial control units

Supervisors Procurement Notes

Verify the exact part number suffix against official Analog Devices documentation to ensure correct package type and temperature rating. Confirm that the DFN-8 footprint matches your PCB design requirements. Check for RoHS compliance status and moisture sensitivity level details in the latest datasheet before finalizing procurement specifications.

Supervisors Selection Notes

Select this component when simultaneous monitoring of three distinct voltage rails is required alongside a dedicated power-fail signal. The low quiescent current makes it suitable for battery-backed or energy-efficient designs. Ensure the monitored voltage range falls within the specified 1.1V to 5V limits and that the DFN-8 package fits the available board space constraints.

Supervisors Part Context

This part belongs to the LTC2911 series of precision supply monitors from Analog Devices. It is specifically designed for applications requiring high accuracy and reliability in supervising multiple power lines. The HDDB-3 variant indicates a specific factory-set threshold configuration within the DFN-8 package family.

Supervisors Replacement Considerations

Direct substitutes include other parts from the LTC2911 series such as LTC2911HDDB-1#TRPBF or LTC2911ITS8-1#TRMPBF, provided they match the required pinout and threshold specifications. Verify functional compatibility regarding the power-fail comparator and reset output polarity before substitution.