MCP39F521T-E/MQ

Overview

The MCP39F521T-E/MQ is a single-phase power monitoring IC manufactured by Microchip Technology. It operates within a supply voltage range of 2.7 V to 3.6 V and consumes 13 mA of operating current. The device features an accuracy of 0.1% and supports I2C communication with speeds up to 400 kHz. It is housed in a 28-VFQFN exposed pad package (5x5 mm) and is qualified under AEC-Q100 standards. The component functions across a temperature range of -40°C to +125°C.

Feature Summary

• Provides comprehensive measurement of active, reactive, and apparent power along with RMS current and voltage.
• Supports high or low side current sensing configurations for flexible system integration.
• Includes event notification capabilities for overcurrent, overpower, voltage sag, and voltage surge conditions.

Applications

• Single-phase power and energy monitoring systems
• I2C bus connected multi-device power management setups
• AC operation circuits ranging from 90V to 240V

Procurement Notes

Verify the specific suffix 'E' indicates automotive qualification compliance per AEC-Q100 standards. Confirm the 'MQ' designation matches the required 28-VFQFN package dimensions. Ensure the I2C address pins are correctly configured if connecting multiple devices on the same bus. Check that the operating voltage aligns with the 2.7 V to 3.6 V specification.

Selection Notes

Select this component when high precision is required for single-phase AC power monitoring. The 0.1% accuracy makes it suitable for applications demanding strict energy measurement standards. Consider the I2C interface requirements and the need for event notifications for fault detection. The wide operating temperature range supports deployment in harsh industrial environments.

Part Context

This part belongs to the MCP39F5xx series of power monitoring ICs designed for single-phase applications. It integrates analog front-end processing with digital calculation engines to deliver accurate power metrics. The series is characterized by its support for standard power calculations including power factor and line frequency.

Replacement Considerations

MCP39F501T-E/MQ: Similar single-phase power monitor with identical package and electrical specifications. Verify if the specific feature set required for the application matches between these variants.