MCP39F521-E/MQ

Overview

The MCP39F521-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 at speeds up to 400 kHz. It is housed in a 28-lead QFN package with exposed pad (QFN-EP-28) and is qualified under AEC-Q100 standards. The component functions across a temperature range of -40°C to +125°C, supporting high or low side sensing configurations for precise energy measurement.

Feature Summary

• Provides comprehensive single-phase power and energy monitoring capabilities via an I2C interface.
• Delivers industry-leading measurement accuracy of 0.1% for reliable data collection.
• Includes event notification mechanisms for overcurrent, overpower, voltage sag, and voltage surge conditions.

Applications

• Single-phase power and energy monitoring systems
• Smart home and smart city energy management devices
• IoT applications requiring precise power tracking

Procurement Notes

Verify the specific suffix 'E/MQ' matches the required 28-QFN package and automotive qualification status. Confirm that the I2C address configuration aligns with system constraints, as the design allows connecting up to four devices. Ensure the selected variant meets the required operating temperature range of -40°C to +125°C for the intended application environment.

Selection Notes

Select this component when high precision is critical for single-phase AC/DC power monitoring. The 0.1% accuracy and AEC-Q100 qualification make it suitable for automotive and industrial environments. Consider the 28-QFN footprint for space-constrained designs and utilize the built-in event notifications for proactive system maintenance without complex external circuitry.

Part Context

This part belongs to the MCP39F5xx series of power monitoring ICs from Microchip Technology. These devices are designed to simplify the integration of power measurement into embedded systems. The series typically includes variants with different pin counts or feature sets, but the MCP39F521 specifically targets single-phase applications with robust diagnostic capabilities.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official Microchip resources for potential cross-references or updated product line replacements.