LTC2919IMS-3.3#PBF

Supervisors Overview

The LTC2919IMS-3.3#PBF 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. The device utilizes an open-drain output configuration to signal fault states. Key electrical parameters include a maximum supply voltage of 6 V, a reset delay time of 200 ms, and an operating accuracy of 1.5%. It operates within a temperature range of -40°C to +85°C and draws a typical supply current of 50 µA. The component is housed in a compact MSOP-10 surface-mount package.

Supervisors Feature Summary

• Provides simultaneous monitoring of three distinct voltage inputs for comprehensive power integrity management.
• Detects critical power anomalies including under-voltage, over-voltage, and negative voltage events.
• Features a low-power architecture with minimal quiescent current consumption suitable for battery-operated applications.

Supervisors Applications

• Multi-rail power supply supervision in industrial control systems
• Voltage monitoring in portable electronic devices requiring low standby current
• System protection in automotive electronics exposed to wide temperature variations

Supervisors Procurement Notes

Verify the specific suffix and package type against the official Analog Devices datasheet to ensure compatibility with your design requirements. Confirm that the MSOP-10 footprint matches your PCB layout constraints. Check for any recent Product Change Notifications (PCNs) regarding material or manufacturing site updates. Ensure the component meets the required RoHS compliance standards for your target market. Validate the operating temperature range against your environmental specifications.

Supervisors Selection Notes

Select this component when precise monitoring of three separate voltage lines is required without manual reset functionality. Consider the 1.5% accuracy specification for applications demanding reliable fault detection thresholds. Evaluate the 200 ms reset delay to ensure it aligns with system startup timing requirements. Compare the 50 µA supply current against other supervisors if power efficiency is a primary constraint. Verify that the open-drain output interface is compatible with the downstream logic levels of your microcontroller or processor.

Supervisors Part Context

This part belongs to the LTC2919 series of precision voltage monitors from Analog Devices. The series offers various configurations for monitoring dual or triple inputs with different threshold options. The IMS variant specifically denotes the MSOP-10 package format, distinguishing it from DFN or wider TSSOP alternatives within the same functional family. This series is designed for applications requiring high accuracy and low power consumption in compact form factors.

Supervisors Replacement Considerations

Consult the official Analog Devices cross-reference guide for verified substitutes. Potential alternatives may include other parts within the LTC2919 family with adjusted threshold voltages or package types. Ensure any replacement maintains the same number of monitored inputs and output configuration. Verify thermal performance and pinout compatibility before implementation.