LTC2946MPMS#PBF

Overview

The LTC2946MPMS#PBF is a single-channel energy meter IC manufactured by Analog Devices Inc., housed in a 16-lead MSOP package. It measures current, voltage, power, charge, and energy with a measurement error of 0.5%. The device operates on a supply voltage range of 2.7 V to 100 V and draws 900 µA of supply current. It supports an operating temperature range from -40°C to 125°C and communicates via the I2C interface.

Feature Summary

• Rail-to-rail system monitoring capability for comprehensive electrical parameter tracking
• Integrated shunt regulator designed to handle supply voltages exceeding 100 V
• High-precision measurement architecture ensuring low measurement error

Applications

• Main power supply monitoring in automotive systems
• Secondary power supply monitoring using a single LTC2946 configuration
• Harsh environment applications requiring transient tolerance

Procurement Notes

Verify the specific suffix MPMS against official Analog Devices documentation to confirm the exact grade and packaging specifications. Ensure compatibility with the target PCB footprint for the 16-MSOP package. Cross-reference the datasheet revision history for any recent manufacturing changes or material declarations before finalizing procurement orders.

Selection Notes

Select this component when high accuracy is required for main and auxiliary power rails within a single-chip solution. The integrated shunt regulator allows operation in environments with significant voltage transients. Consider the 16-MSOP package constraints and the 900 µA supply current requirement during system power budgeting and thermal design phases.

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 LTC2946IMS#PBF but is distinguished by its specific commercial/industrial grade designation and MSOP packaging. The family is designed for rail-to-rail monitoring across diverse industrial and automotive voltage domains.

Replacement Considerations

LTC2946IMS#PBF offers similar monitoring capabilities in a comparable MSOP package. Verify if the specific grade or transient handling requirements of the MPMS variant are strictly necessary compared to standard IMS versions.