LTC2909IDDB-5#TRMPBF

Supervisors Overview

The LTC2909IDDB-5#TRMPBF is a precision supervisory circuit manufactured by Analog Devices Inc. It functions as a triple/dual input voltage monitor capable of detecting under-voltage, over-voltage, and negative voltage conditions. The device operates with a maximum supply voltage of 6 V and draws a typical quiescent current of 50 uA. It features an open-drain output with a fixed reset delay time of 200 ms. The component provides high accuracy of 1.5% and supports adjustable threshold voltages alongside a fixed 5 V reference option. It is housed in an 8-DFN (3x2) package and operates within a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Monitors three inputs for under-voltage, over-voltage, and negative voltage faults
• Provides precise voltage supervision with 1.5% accuracy
• Features open-drain reset output with configurable timeout
• Operates at low power consumption suitable for battery applications

Supervisors Applications

• Portable electronic devices requiring multi-rail power monitoring
• Battery-powered systems needing under-voltage protection
• Industrial control circuits with multiple voltage domains
• Communication equipment requiring reliable power supervision

Supervisors Procurement Notes

Verify the specific suffix #TRMPBF indicates tape and reel packaging when sourcing. Confirm the ID variant meets industrial temperature requirements (-40°C to +85°C). Ensure the open-drain output configuration aligns with system logic levels. Check RoHS compliance status for environmental regulations. Validate the 8-DFN footprint compatibility during PCB layout.

Supervisors Selection Notes

Select this component when simultaneous monitoring of multiple voltage rails is required. Consider the 1.5% accuracy for critical threshold detection needs. Evaluate the 50 uA quiescent current against battery life constraints. Compare the 200 ms reset delay with system startup timing requirements. Assess the 6 V maximum supply limit against the highest rail voltage.

Supervisors Part Context

This part belongs to the LTC2909 family of precision voltage monitors from Analog Devices. It complements other LDO regulators and switching controllers in power management designs. The DFN package offers a compact solution for space-constrained applications. It serves as a dedicated supervisory element within complex PMIC architectures.

Supervisors Replacement Considerations

LTC2909IDDB-5#TR is a previous generation version of this component. Verify pinout and electrical specifications before substitution. Check for any changes in packaging or lead-free compliance between revisions.