LTC2909ITS8-3.3#TRM

Supervisors Overview

The LTC2909ITS8-3.3#TRM is a precision voltage monitor manufactured by Analog Devices Inc., housed in an 8-pin TSOT-23 surface-mount package. It features three monitored inputs capable of detecting under-voltage, over-voltage, and negative voltage conditions. The device provides an active-low reset output with open-drain configuration and includes manual reset functionality. It operates within a supply voltage range up to 6V and maintains accuracy within 1.5%. The component supports adjustable thresholds and offers selectable or adjustable reset timeout delays.

Supervisors Feature Summary

• Provides precise monitoring for dual or triple input voltages including under-voltage, over-voltage, and negative voltage detection
• Integrates manual reset capability allowing user-initiated system recovery independent of voltage conditions
• Features open-drain reset output compatible with various logic families and pull-up configurations

Supervisors Applications

• Monitoring multiple power rails in embedded systems requiring precise threshold detection
• Industrial control units needing manual intervention capabilities for system resets
• Portable devices utilizing low-power supervision with limited board space constraints

Supervisors Procurement Notes

Verify the specific suffix ITS8 corresponds to the TSOT-23 package variant when sourcing. Confirm RoHS compliance status as per current manufacturer declarations. Ensure the manual reset feature requirement aligns with the system design, as this variant explicitly supports it unlike some other family members. Cross-reference the exact part number with official Analog Devices documentation to confirm availability and lead times through authorized distributors.

Supervisors Selection Notes

Select this variant when manual reset functionality is required alongside multi-input supervision. The TSOT-23 package suits applications with strict spatial limitations compared to larger DFN options. Consider the 1.5% accuracy specification against system tolerance requirements. Evaluate the 6V maximum supply limit to ensure compatibility with the target power rail architecture before finalizing the component choice.

Supervisors Part Context

This component belongs to the LTC2909 series of precision supervisors designed for monitoring critical power lines. The series differentiates itself by offering configurable inputs and optional manual reset features. The ITS8 designation specifically identifies the small outline transistor package version, catering to compact consumer and industrial electronics where footprint size is a primary constraint.

Supervisors Replacement Considerations

Direct replacements include other LTC2909 variants such as LTC2909IDB or LTC2909CTS8 if package differences are acceptable. Verify that substitute parts maintain the manual reset feature if required. Check pinout compatibility between TSOT-23 and alternative packages like DFN-8 to ensure PCB layout adjustments are not necessary.