LTC2909CDDB-2.5#TRMPBF

Supervisors Overview

The LTC2909CDDB-2.5#TRMPBF 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 provides a low-active open-drain reset output with an adjustable timeout period to ensure system stability during power transitions. Packaged in an 8-lead DFN (3x2 mm) surface-mount footprint, it operates within a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Triple-input architecture supporting simultaneous monitoring of distinct voltage rails
• Configurable detection thresholds for under-voltage, over-voltage, and negative voltage events
• Adjustable reset timeout duration to accommodate specific system startup requirements

Supervisors Applications

• Multi-rail power supply supervision in industrial control systems
• Voltage monitoring for microprocessor and FPGA power domains
• Embedded system protection against abnormal power conditions

Supervisors Procurement Notes

Verify the exact part number suffix and manufacturer source before procurement. Confirm availability status as distribution may vary. Ensure compatibility with existing PCB footprints and thermal management requirements. Check for recent manufacturing changes or obsolescence notices from Analog Devices.

Supervisors Selection Notes

Select this component when triple-channel voltage supervision is required in a compact form factor. Consider the adjustable timeout feature for flexible reset timing. Evaluate the operating temperature range against environmental constraints. Compare pinout and package dimensions with alternative supervisors if space is limited.

Supervisors Part Context

This part belongs to the LTC2909 series of precision voltage monitors. It shares functional similarities with other multi-channel supervisors but offers specific threshold configurations. The DFN package provides a small footprint suitable for dense PCB layouts. It complements other PMIC components in complex power management architectures.

Supervisors FAQ

What are the monitored input types supported by this device?

The device supports monitoring for under-voltage, over-voltage, and negative voltage conditions across its three input channels.

Is the reset output active high or active low?

The reset output is active low and utilizes an open-drain configuration.