LTC2919CMS-3.3#TRPBF

Supervisors Overview

The LTC2919CMS-3.3#TRPBF is a precision supervisory circuit manufactured by Analog Devices Inc., designed for monitoring multiple voltage rails in power management systems. It features three independent input channels capable of detecting under-voltage, over-voltage, and negative voltage conditions. The device operates within a supply voltage range up to 6 V and maintains an accuracy of 1.5%. Key electrical parameters include a reset delay time of 140 ms minimum and a quiescent current of 50 uA. It utilizes an open-drain output configuration and is housed in a compact 10-MSOP package suitable for surface-mount applications.

Supervisors Feature Summary

• Provides precise monitoring for three independent voltage inputs with configurable thresholds
• Detects under-voltage, over-voltage, and negative voltage anomalies simultaneously
• Features low quiescent current consumption for energy-efficient operation
• Delivers active-low reset signals via open-drain outputs upon fault detection

Supervisors Applications

• Multi-rail power supply supervision in industrial equipment
• Voltage monitoring in portable battery-operated devices
• System protection in embedded computing platforms
• Over-voltage and under-voltage protection in communication modules

Supervisors Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing components. Confirm that the CMS variant corresponds to the commercial temperature range specifications required for your application environment. Ensure compatibility with the 10-MSOP footprint during PCB layout finalization. Cross-reference the manufacturer's latest datasheet for any recent pinout or electrical characteristic updates before placing orders.

Supervisors Selection Notes

Select this component when simultaneous monitoring of three distinct voltage rails is required within a compact form factor. The fixed threshold version simplifies design compared to adjustable variants, reducing external resistor requirements. Consider the 1.5% accuracy specification against system tolerance needs. Evaluate the 50 uA operating current against total system power budgets for battery longevity optimization.

Supervisors Part Context

This part belongs to the LTC2919 series of precision voltage monitors from Analog Devices. The series offers various packages including MSOP and DFN options with different threshold configurations. The CMS designation identifies the commercial grade temperature range variant. The #TRPBF suffix denotes the specific tape-and-reel packaging format compliant with RoHS directives.

Supervisors Replacement Considerations

Direct substitutes include other LTC2919 variants with identical functionality but different packages or thresholds, such as LTC2919CDDB-3.3#TRMPBF for DFN packaging. Verify pin-to-pin compatibility and electrical parameter equivalence before substitution. Alternative families may require schematic redesign due to differing interface characteristics.