LTC2946HMS#PBF

Overview

The LTC2946HMS#PBF is a single-phase energy monitor IC manufactured by Analog Devices Inc. It operates within a supply voltage range of 2.7 V to 100 V and draws 900 µA of supply current. The device provides measurement accuracy with a maximum error of 0.5%. It is housed in a 16-MSOP surface-mount package and functions reliably across an operating temperature range of -40°C to 125°C.

Feature Summary

• Rail-to-rail system monitoring capability for measuring current, voltage, power, charge, and energy
• Integrated shunt regulator designed for supplies exceeding 100 V
• I2C interface communication for data retrieval

Applications

• Bidirectional power monitoring with energy and charge tracking in forward paths
• Wide range negative power, charge, and energy monitoring for negative supplies
• General rail-to-rail power, charge, and energy monitoring systems

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS3 status. Confirm the 16-MSOP package dimensions match your PCB footprint requirements. Check for recent PCN notifications regarding material or bonding wire changes that may affect long-term sourcing stability.

Selection Notes

Select this component when high-voltage monitoring up to 100 V is required without external level shifting. The integrated shunt regulator simplifies designs for voltages above 100 V. Ensure the I2C bus speed and address configuration align with the system controller capabilities.

Part Context

This part belongs to the LTC2946 family of wide-range I2C power, charge, and energy monitors. It shares core functionality with variants like the LTC2946HDE#PBF but differs in packaging. The MSOP form factor offers a compact solution for space-constrained single-phase metering applications.

Replacement Considerations

LTC2946IMS#PBF and LTC2946MPMS#PBF are alternative parts within the same series. Verify if performance grade differences or specific automotive qualifications are required before substitution.