LTC2921CGN-3.3#PBF

Power Supply Controllers, Monitors Overview

The LTC2921CGN-3.3#PBF is a precision multi-supply monitor manufactured by Analog Devices Inc., housed in a 16-Lead SSOP package. It monitors three independent voltage inputs with fixed thresholds of 2.5 V and 3.3 V, plus one adjustable channel. The device features an open-drain power-fail comparator output with a typical reset delay of 200 ms. It operates within a supply voltage range up to 6.5 V and functions across a commercial temperature range of 0°C to +70°C.

Power Supply Controllers, Monitors Feature Summary

• Monitors three distinct input voltages simultaneously using dedicated threshold channels.

Power Supply Controllers, Monitors Applications

• Multi-rail server power distribution monitoring
• Industrial control system voltage supervision
• Telecommunications equipment power integrity verification

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix #PBF indicates tube packaging rather than tape-and-reel configuration when reviewing distributor listings. Confirm the -3.3 designation aligns with required fixed threshold levels for your design. Check current availability status as limited stock conditions may apply to this specific Analog Devices part number.

Power Supply Controllers, Monitors Selection Notes

Select this component when simultaneous monitoring of multiple rails is required without external logic. The fixed 3.3 V threshold simplifies design for standard logic supplies. Ensure the adjustable channel meets the lowest expected voltage requirement. Verify that the 200 ms reset delay satisfies system startup timing constraints.

Power Supply Controllers, Monitors Part Context

This part belongs to the LTC2921 family of precision power supply monitors. It provides a compact solution for supervising critical voltage lines in space-constrained applications. The SSOP package offers a balance between pin count and board area efficiency compared to larger industrial packages.

Power Supply Controllers, Monitors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices technical support for direct replacements or cross-reference options based on specific electrical requirements.