LTC2911HDDB-4

Supervisors Overview

The LTC2911HDDB-4 is a supervisory circuit manufactured by Analog Devices Inc., designed for precise monitoring of multiple power supply rails. It features three independent voltage monitors with integrated power-fail comparison capabilities, housed in an 8-lead DFN surface-mount package. The device operates within a temperature range of -40°C to 125°C and draws a typical operating supply current of 10 µA. This component belongs to the LTC2911 series and is classified under PMIC supervisory circuits.

Supervisors Feature Summary

• Provides precise supervision for three distinct voltage channels
• Integrates a dedicated power-fail comparator for system alerting
• Supports extended industrial operating temperatures up to 125°C

Supervisors Applications

• Multi-rail power supply monitoring in embedded systems
• Industrial control unit voltage supervision
• Communication equipment power integrity verification

Supervisors Procurement Notes

Verify availability through authorized distributors as stock may be limited or subject to factory special orders. Confirm RoHS compliance status and ensure the specific suffix matches required packaging options. Cross-reference datasheet specifications against design requirements before finalizing procurement decisions.

Supervisors Selection Notes

Select this component when three-channel voltage monitoring with power-fail signaling is required. Ensure the DFN-8 package fits the PCB layout constraints. Verify that the monitored voltage thresholds align with system rail specifications. Consider the low quiescent current for battery-sensitive applications.

Supervisors Part Context

This part belongs to the LTC2911 family of supervisory circuits from Analog Devices. The series offers various channel counts and package options tailored for different power management needs. The HDDB-4 variant specifically denotes the 3-channel configuration with power-fail functionality in an 8-lead DFN form factor.

Supervisors Replacement Considerations

LTC2911IDDB-4#TRMPBF and LTC2911ITS8-1#TRMPBF are related variants within the same family. Verify pin compatibility and threshold settings when substituting. Package differences between DFN and TSOT-23 require layout adjustments.