LTC2945CUD-1#TRPBF

Power Supply Controllers, Monitors Overview

The LTC2945CUD-1#TRPBF is a rail-to-rail system monitor manufactured by Analog Devices Inc., designed for precise current, voltage, and power measurement. It operates within an input voltage range of 2.7 V to 80 V and features high-side sensing capabilities. The device includes an integrated shunt regulator to accommodate supply voltages exceeding 80 V, providing flexibility in input selection. Packaged in a 12-pin QFN EP format, it supports surface-mount installation and functions reliably across a temperature range of -40 °C to +85 °C.

Power Supply Controllers, Monitors Feature Summary

• Rail-to-rail system monitoring with simultaneous measurement of current, voltage, and power
• Integrated shunt regulator enables operation with input supplies above 80 V
• High-side sensing architecture for accurate current detection

Power Supply Controllers, Monitors Applications

• -48V system power monitoring using external linear regulators
• Wide-range dual supply monitoring
• Bidirectional current and power monitoring applications

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix #TRPBF confirms tape-and-reel packaging when sourcing. Confirm the C-grade industrial temperature rating aligns with operational requirements. Ensure compatibility with I2C interface protocols used in the target design. Cross-reference the manufacturer part number directly with official Analog Devices documentation to avoid counterfeit components.

Power Supply Controllers, Monitors Selection Notes

Select this component for designs requiring wide input voltage coverage up to 80 V without external level shifting. The integrated shunt regulator simplifies biasing for high-voltage systems. Consider the QFN package size for space-constrained layouts. Verify that the required sensing accuracy and I2C communication speed meet system specifications before finalizing the bill of materials.

Power Supply Controllers, Monitors Part Context

This part belongs to the LTC2945 series of power monitors from Analog Devices. It shares core functionality with variants like the LTC2945IUD-1 and LTC2945HUD-1, differing primarily in temperature grade and packaging format. The series provides a standardized solution for comprehensive power management monitoring in industrial and automotive environments.

Power Supply Controllers, Monitors Replacement Considerations

Direct substitutes include other LTC2945 variants such as LTC2945CUD-1#PBF for tube packaging or LTC2945IUD-1#TRPBF for extended temperature ranges. Verify pinout compatibility and software register mapping before swapping between different suffixes within the same family.