LTC2945HUD#PBF

Power Supply Controllers, Monitors Overview

The LTC2945HUD#PBF is a rail-to-rail system monitor manufactured by Analog Devices Inc. It measures current, voltage, and power with an operating range of 2.7V to 80V. The device includes a shunt regulator for supplies above 80V to allow flexibility in input supply selection. It features high-side sensing and operates within a temperature range of -40°C to +85°C. The component is housed in a 12-pin QFN EP package and supports SMD/SMT installation.

Power Supply Controllers, Monitors Feature Summary

• Rail-to-rail system monitoring capability for current, voltage, and power
• Integrated shunt regulator for handling input supplies exceeding 80V
• High-side sensing architecture

Power Supply Controllers, Monitors Applications

• -48V system power monitoring using low side detection
• Wide range dual supply monitoring
• Power monitoring in harsh environments with INTVCC shunt regulator for transient tolerance
• General purpose power supply controllers and monitors

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix '#PBF' indicates tube packaging when sourcing. Confirm the 'HUD' designation aligns with the required automotive or industrial specifications. Ensure the 12-pin QFN EP package matches the PCB footprint. Cross-reference the manufacturer part number with official Analog Devices documentation to avoid counterfeit components.

Power Supply Controllers, Monitors Selection Notes

Select this component for applications requiring wide input voltage coverage up to 80V. The integrated shunt regulator is critical for systems with potential overvoltage conditions. Consider the QFN EP package for thermal performance and space constraints. Verify compatibility with high-side sensing requirements versus low-side alternatives.

Power Supply Controllers, Monitors Part Context

This part belongs to the LTC2945 series of power monitors. It is designed for precise measurement of electrical parameters in complex power systems. The series offers various packages including MSOP and QFN variants. The HUD variant specifically addresses high-voltage input flexibility through its internal regulation features.

Power Supply Controllers, Monitors Replacement Considerations

Check for other LTC2945 variants such as LTC2945IUD-1#PBF or LTC2945HMS-1#PBF if different package types are needed. Ensure functional equivalence regarding the 80V operating range and shunt regulator capabilities before substitution.