LTC2947IUHF-65#PBF

Overview

The LTC2947IUHF-65#PBF is a single-phase power and energy monitor IC manufactured by Analog Devices Inc. It features an integrated precision sense resistor rated for up to 65A, eliminating the need for external shunt components. The device provides high-accuracy measurements of current, voltage, power, and accumulated energy via SPI or I2C digital interfaces. Designed for industrial applications, it operates within a specified temperature range and utilizes a compact 38-QFN (5x7mm) package to facilitate efficient PCB layout in space-constrained power management systems.

Feature Summary

• Integrates a precision sense resistor capable of handling high current loads without external shunts
• Provides simultaneous measurement of current, voltage, power, and accumulated energy
• Supports standard digital communication protocols including SPI and I2C for system integration

Applications

• Industrial motor drives and control systems
• Power distribution units and smart meters
• Battery management systems requiring precise energy monitoring
• Telecommunications power infrastructure

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence before procurement. Confirm the IUHF package variant matches your PCB footprint requirements. Ensure the selected component aligns with the intended current rating of 65A for your specific application design constraints.

Selection Notes

Select this component when integrated sensing is required to reduce bill of materials and board space. The integrated resistor simplifies thermal management calculations compared to external shunts. Consider the digital interface compatibility with your microcontroller when designing the communication layer for data acquisition.

Part Context

This part belongs to the LTC2947 family of power monitors, which are designed for high-accuracy energy metering. The -65 designation specifies the integrated resistor value suitable for 65A applications. It serves as a core component in modern power management architectures where precise telemetry is critical for system efficiency and protection.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative models from the same manufacturer only if they explicitly support the same integrated resistor configuration and pinout compatibility.