MCP39F511AT-E/MQ

Overview

The MCP39F511AT-E/MQ is a single-phase power monitoring IC designed for real-time measurement of AC and DC power. It features dual 24-bit Delta-Sigma ADCs for current sensing and a 10-bit SAR ADC for voltage, achieving an accuracy of 0.1% across a 4000:1 dynamic range. The device operates on a supply voltage between 2.7 V and 3.6 V with a typical operating current of 13 mA. It includes a 16-bit calculation engine, integrated EEPROM for event logging, and supports AEC-Q100 automotive qualification.

Feature Summary

• Dual-mode capability to automatically detect and measure both AC and DC power sources within a single integrated circuit.
• High-precision measurement architecture utilizing dual 24-bit Delta-Sigma ADCs and a dedicated 16-bit calculation engine.
• Integrated non-volatile memory for automatic saving and retrieval of power data during power transitions or events.
• Automotive-grade reliability compliant with AEC-Q100 standards for harsh environment operation.

Applications

• Solar inverters requiring seamless transition between AC mains and DC backup power
• Smart lighting systems needing precise energy consumption monitoring
• Cloud servers and IT infrastructure for power usage effectiveness tracking

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration when ordering. Confirm that the '-E' designation aligns with the required industrial temperature range specifications for your target application environment. Ensure compatibility with the QFN-28 package footprint during PCB layout finalization.

Selection Notes

Select this component for designs requiring simultaneous AC/DC monitoring without multiple discrete sensors. The integrated low-drift voltage reference simplifies calibration procedures compared to external reference solutions. Consider the 13 mA operating current for battery-backed or low-power standby system constraints.

Part Context

This part belongs to Microchip's MCP39F51x family of high-accuracy power monitors. It serves as a specialized solution for applications demanding industry-leading precision in mixed-mode power environments, replacing traditional multi-chip architectures with a single highly integrated silicon solution.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pin-to-pin compatibility with legacy models only through official Microchip cross-reference tools.

FAQ

How does the MCP39F511AT-E/MQ handle power source transitions?

The device automatically detects whether the input is AC or DC and switches its measurement mode accordingly to maintain optimal accuracy across the 4000:1 dynamic range.

What is the purpose of the internal EEPROM in this IC?

The internal EEPROM stores critical power data and event logs, allowing the system to retain measurements during unexpected power loss and retrieve them upon re-powering.