LTC2919IDDB-3.3#TRMPBF

Supervisors Overview

The LTC2919IDDB-3.3#TRMPBF is a precision triple/dual input voltage monitor manufactured by Analog Devices Inc. It operates within an industrial temperature range of -40°C to +85°C and features a low quiescent current of 10 µA. The device monitors three independent voltage inputs with thresholds including fixed options like 2.921V and adjustable settings. It provides open-drain or open-collector outputs for under-voltage, over-voltage, and negative voltage detection. The component is housed in a compact 10-WFDFN (3x2) package with an exposed pad, suitable for surface-mount assembly.

Supervisors Feature Summary

• Monitors up to three independent voltage rails simultaneously
• Configurable for under-voltage, over-voltage, and negative voltage supervision
• Features adjustable threshold voltages alongside fixed precision options
• Provides active-low reset output with selectable timeout delay

Supervisors Applications

• Industrial control systems requiring multi-rail power supervision
• Telecommunications equipment monitoring critical voltage levels
• Embedded systems needing precise power-fail detection
• Automotive electronics requiring robust voltage monitoring

Supervisors Procurement Notes

Verify the specific suffix #TRMPBF indicates tape-and-reel packaging when ordering. Confirm the industrial grade designation 'I' matches your thermal requirements. Ensure the DFN-10 footprint aligns with your PCB layout constraints. Check for RoHS compliance status if required by your manufacturing standards. Validate availability through authorized distributors as supply may be limited.

Supervisors Selection Notes

Select this part when simultaneous monitoring of multiple voltage domains is necessary. Choose the adjustable threshold variant if standard fixed voltages do not match your system rails. Consider the 10µA quiescent current for battery-powered applications where efficiency is critical. Verify that the open-drain output capability integrates correctly with your microcontroller reset logic.

Supervisors Part Context

This component belongs to the LTC2919 family of precision voltage supervisors from Analog Devices. It shares functional similarities with the LTC2909 but offers enhanced flexibility with dual adjustable channels. The device is designed to replace discrete comparator-based solutions, reducing board space and improving accuracy in complex power management architectures.

Supervisors Replacement Considerations

The LTC2919CDDB-3.3#TRMPBF serves as a commercial-grade alternative with identical pinout and functionality but a restricted operating temperature range of 0°C to 70°C. Verify thermal requirements before substituting, as the industrial grade IDDB variant supports -40°C to +85°C operation.