LTC2909CDDB-5#TRMPBF

Supervisors Overview

The LTC2909CDDB-5#TRMPBF is a precision supervisory circuit manufactured by Analog Devices Inc., designed for monitoring multiple voltage rails. It features three independent inputs capable of detecting under-voltage, over-voltage, and negative voltage conditions. The device operates within a supply voltage range up to 6 V and draws a typical quiescent current of 50 uA. It utilizes an 8-pin DFN package for surface mount installation. The output is configured as open drain with a reset delay time of 200 ms and maintains an accuracy of 1.5%. It supports threshold voltages of 5 V or adjustable settings.

Supervisors Feature Summary

• Monitors three independent input channels for under-voltage, over-voltage, and negative voltage faults
• Provides open-drain output signaling for system reset or interrupt generation
• Operates with low power consumption suitable for battery-powered applications

Supervisors Applications

• Multi-rail power supply supervision in embedded systems
• Monitoring critical voltage levels in industrial control equipment
• Fault detection in portable electronic devices requiring low standby current

Supervisors Procurement Notes

Verify the specific suffix #TRMPBF indicates tape and reel packaging when sourcing. Confirm the -C grade temperature range meets operational requirements. Check manufacturer documentation for RoHS compliance status and ensure the 8-DFN footprint matches PCB design constraints before procurement.

Supervisors Selection Notes

Select this component when simultaneous monitoring of three distinct voltage lines is required without external comparators. Consider the 50 uA quiescent current for efficiency-critical designs. Ensure the open-drain output interface aligns with the downstream logic level requirements of the microcontroller or processor being supervised.

Supervisors Part Context

This part belongs to the LTC2909 series of precision voltage monitors from Analog Devices. It serves as a compact solution for multi-channel power management, replacing discrete comparator circuits. The DFN package offers a small form factor ideal for space-constrained printed circuit board layouts in modern electronic assemblies.

Supervisors Replacement Considerations

LTC2909IDDB-5#TRMPBF: Offers improved accuracy specifications compared to the standard grade variant.