LTC2909CDDB-2.5#TRPBF

Supervisors Overview

The LTC2909CDDB-2.5#TRPBF 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 operates with a maximum supply voltage of 6V and draws a low quiescent current of 50µA. It provides an active-low open-drain reset output with a fixed 200ms reset delay time. The component is housed in an 8-WFDFN (3x2) package with an exposed pad, suitable for surface-mount installation across industrial temperature ranges.

Supervisors Feature Summary

• Triple-input architecture supporting simultaneous monitoring of under-voltage, over-voltage, and negative voltage thresholds
• Low power consumption with 50µA operating supply current to minimize standby drain
• Fixed 200ms reset delay ensures stable system recovery after fault clearance
• Open-drain active-low reset output compatible with standard digital logic interfaces

Supervisors Applications

• Multi-rail power sequence monitoring in industrial control systems
• Battery backup supervision in portable electronic devices
• Fault detection in telecommunications infrastructure equipment
• Voltage integrity verification in automotive sensor modules

Supervisors Procurement Notes

Verify the exact suffix TRPBF indicates tape-and-reel packaging configuration. Confirm the CDDB variant meets commercial temperature specifications (-40°C to +85°C). Ensure the 2.5V threshold designation matches the required monitoring level. Cross-reference the DFN-8 footprint dimensions against PCB layout guidelines. Validate RoHS compliance status through official manufacturer documentation prior to procurement.

Supervisors Selection Notes

Select this component when triple-channel voltage supervision is required within a compact footprint. The fixed 2.5V threshold suits applications monitoring 3.3V or 5V rails with defined margins. Consider the 200ms delay duration against system startup timing requirements. Evaluate the open-drain output capability against pull-up resistor availability in the target design. Compare quiescent current performance against alternative supervisors in battery-operated contexts.

Supervisors Part Context

This part belongs to the LTC2909 series of precision voltage monitors from Analog Devices. The series offers configurable threshold options and packaging variants including SOT-23-8 and DFN-8 formats. The CDDB suffix denotes the commercial temperature grade and DFN-8 package style. The family supports applications requiring reliable fault detection without complex external programming networks.

Supervisors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.