LTC2909ITS8-3.3#TRMPBF

Supervisors Overview

The LTC2909ITS8-3.3#TRMPBF is a precision supervisory circuit manufactured by Analog Devices Inc., designed for monitoring multiple voltage rails in embedded systems. It features three independent input channels capable of detecting under-voltage, over-voltage, and negative voltage conditions simultaneously. The device operates within a supply voltage range of -0.3 V to 6 V and maintains an operating temperature range from -40°C to +85°C. Key electrical specifications include a typical quiescent current of 50 µA and a reset delay time of 200 ms. The component utilizes an SOT-23-8 surface-mount package and provides an open-drain output with manual reset functionality.

Supervisors Feature Summary

• Supports simultaneous monitoring of up to three independent voltage inputs for comprehensive system supervision
• Integrates manual reset capability allowing user-initiated recovery from fault conditions
• Provides precise detection of under-voltage, over-voltage, and negative voltage anomalies

Supervisors Applications

• Multi-rail power supply monitoring in industrial control systems
• Voltage supervision for portable battery-operated devices
• System integrity monitoring in telecommunications equipment

Supervisors Procurement Notes

Verify the specific suffix #TRMPBF confirms the tape-and-reel packaging format required for automated assembly processes. Confirm that the ITS8 grade meets the commercial temperature range requirements (-40°C to +85°C) for your specific application environment. Ensure compatibility with the SOT-23-8 footprint during PCB layout finalization.

Supervisors Selection Notes

Select this component when design requirements necessitate monitoring multiple distinct voltage rails using a single integrated solution. The fixed 3.3V threshold setting simplifies design implementation compared to adjustable variants. Consider the low quiescent current consumption if power efficiency is critical for battery-powered applications.

Supervisors Part Context

This part belongs to the LTC2909 family of precision triple/dual input monitors. It shares core architectural features with other members like the LTC2909IDDB series but differs in package type (SOT-23-8 vs DFN) and thermal performance characteristics. The ITS8 designation specifically indicates the commercial temperature grade and pinout configuration.

Supervisors Replacement Considerations

Direct substitutes include other LTC2909 variants such as LTC2909CTS8-3.3#TRMPBF or LTC2909IDB-3.3#TRMPBF, provided package compatibility and temperature ratings align with design constraints.