LTC2909CDDB-3.3#TRPBF

Supervisors Overview

The LTC2909CDDB-3.3#TRPBF is a precision triple/dual input voltage monitor manufactured by Analog Devices Inc. It monitors three external voltages for under-voltage, over-voltage, and negative voltage conditions. The device features an open-drain reset output that asserts low when monitored voltages exceed specified thresholds. It operates within a supply voltage range of 1.6V to 6V and consumes a typical quiescent current of 50µA. The component provides a fixed 200ms reset delay timer and includes selectable timeout options. It is housed in an 8-lead DFN package and supports industrial temperature ranges.

Supervisors Feature Summary

• Monitors up to three external voltage inputs simultaneously for precise system supervision
• Provides configurable reset output with selectable timeout durations for reliable system recovery
• Features low power consumption suitable for battery-operated applications
• Includes built-in 200ms reset delay timer to prevent premature reset assertion

Supervisors Applications

• Portable electronic devices requiring multi-rail power monitoring
• Industrial control systems needing under-voltage and over-voltage protection
• Communication equipment supervising multiple voltage domains
• Embedded systems managing negative voltage rails

Supervisors Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging configuration. Confirm the CDDB variant corresponds to the commercial temperature grade and DFN-8 package type. Ensure compatibility with existing board footprints and soldering profiles for surface-mount assembly. Cross-reference the manufacturer datasheet for exact pinout and electrical characteristics before integration.

Supervisors Selection Notes

Select this component when simultaneous monitoring of three distinct voltage rails is required. Consider the 200ms fixed delay if fast transient immunity is not critical. Evaluate the 50µA quiescent current against system power budgets. Verify that the open-drain output interface aligns with the downstream logic requirements. Check threshold accuracy specifications against application tolerance levels.

Supervisors Part Context

This part belongs to the LTC2909 series of precision voltage supervisors. It complements other Analog Devices PMIC solutions by offering multi-channel monitoring capabilities. The DFN package facilitates compact PCB layouts. It serves as a critical safety component in complex electronic designs where power integrity is paramount.

Supervisors Replacement Considerations

LTC2909IDDB-3.3#TRMPBF offers identical functionality with industrial temperature rating and different packaging.