LTC2905IDDB#TRMPBF

Supervisors Overview

The LTC2905IDDB#TRMPBF is a precision dual supply monitor manufactured by Analog Devices Inc. It operates within a voltage range of 1 V to 7 V and features an open-drain reset output. The device provides two monitored inputs with programmable thresholds, offering nine selectable threshold combinations. It ensures high accuracy with a guaranteed threshold tolerance of ±1.5% across the operating temperature range. The component utilizes an 8-DFN (3x2 mm) surface-mount package and supports adjustable reset delay times via an external capacitor.

Supervisors Feature Summary

• Simultaneous monitoring of two independent power supply rails
• Pin-selectable threshold voltages eliminating external components
• Adjustable reset delay timing controlled by an external capacitor
• High-precision threshold accuracy maintained across temperature variations

Supervisors Applications

• Dual-rail power systems requiring precise supervision
• Portable instrumentation with limited board space
• Industrial automation control circuits
• Embedded systems needing reliable power-fail detection

Supervisors Procurement Notes

Verify the specific suffix IDDB indicates the industrial temperature grade (-40°C to +85°C). Confirm the DFN-8 package dimensions match your PCB footprint requirements. Ensure the external capacitor for reset delay selection aligns with your system's timing specifications. Check RoHS compliance status for environmental regulations. Validate that the open-drain output configuration matches your logic level interface.

Supervisors Selection Notes

Select this component when simultaneous dual-voltage supervision is required without additional external resistors for threshold setting. The adjustable reset delay offers flexibility compared to fixed-delay alternatives. Consider the 8-DFN package size for compact designs. Verify that the input voltage range covers your lowest operating rail. The open-drain output requires appropriate pull-up resistor selection for proper logic levels.

Supervisors Part Context

This part belongs to the LTC2904/LTC2905 family of dual supply monitors designed for space-constrained applications. It shares architectural similarities with single-channel monitors but adds a second input channel. The series emphasizes pin-programmability to reduce bill-of-materials complexity. It serves as a micro-power solution for systems where multiple voltage rails must be supervised simultaneously.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.