LTC2911HDDB-2

Supervisors Overview

The LTC2911HDDB-2 is a low-power, high-accuracy triple supply monitor manufactured by Analog Devices Inc. It features a power-fail comparator and allows reset timeout selection via an external capacitor or internal options. The device operates within a temperature range of -40°C to 125°C and consumes 40 µA of quiescent current. It is housed in an 8-pin WDFN package with an exposed pad.

Supervisors Feature Summary

• Provides monitoring for three distinct voltage rails simultaneously
• Includes a dedicated power-fail comparator for system status indication
• Offers flexible reset timeout configuration through external components or internal settings

Supervisors Applications

• Multi-rail power supply supervision in embedded systems
• Industrial control units requiring high accuracy monitoring
• Telecommunications equipment power management

Supervisors Procurement Notes

Verify the specific suffix and package variant against the official datasheet to ensure compatibility with design requirements. Confirm availability status as distribution may vary by region. Ensure compliance with RoHS directives if required for the target market. Cross-reference pinouts carefully when integrating into existing PCB layouts.

Supervisors Selection Notes

Select this component when simultaneous monitoring of three voltages is required alongside a power-fail signal. Consider the 40 µA quiescent current for battery-sensitive applications. Evaluate the need for adjustable versus fixed reset timeouts based on system startup timing constraints. Verify thermal performance within the specified operating temperature range.

Supervisors Part Context

This part belongs to the LTC2911 series of supervisory circuits designed for multi-voltage monitoring. It complements other variants like the LTC2912 single-channel monitor by offering expanded channel count in a compact footprint. The series targets applications needing reliable power sequence management and fault detection.

Supervisors Replacement Considerations

LTC2911HDDB-3#TRPBF: Triple supply monitor with different threshold configurations. LTC2911ITS8-1#TRMPBF: Triple supply monitor in TSOT-23-8 package.