PAC1934T-I/JQ

Current Regulation/Management Overview

The PAC1934T-I/JQ is a four-channel DC power monitor manufactured by Microchip Technology in a 16-UQFN package. It features high-side current sensing with a ±1% accuracy over the operating temperature range of -40°C to +85°C. The device supports an input common-mode voltage from 0V to 32V and operates on a supply voltage of 2.7V to 5.5V. It utilizes an I2C/SMBus interface for configuration and data retrieval, providing 16-bit resolution for voltage measurements and 14-bit resolution for power calculations.

Current Regulation/Management Feature Summary

• Four-channel high-side power and energy monitoring capability
• Real-time automatic calibration minimizes offset and gain errors without user adjustment
• On-chip accumulation registers support extended integration times up to 36 hours or more
• Configurable sampling rates allow optimization between speed and data volume

Current Regulation/Management Applications

• Battery management systems requiring precise multi-cell monitoring
• Industrial equipment power distribution tracking
• Data center server power rail monitoring
• Portable electronic devices with multiple power domains

Current Regulation/Management Procurement Notes

Verify the specific suffix JQ corresponds to the 16-UQFN package variant when ordering. Confirm that the industrial temperature grade (-40°C to +85°C) meets system requirements. Ensure I2C address settings via external resistors align with bus topology constraints. Check RoHS compliance documentation for final assembly verification.

Current Regulation/Management Selection Notes

Select this component when four independent channels are required for simultaneous monitoring. The high-side sensing architecture simplifies ground reference issues. Consider the 16-UQFN package for space-constrained PCB layouts. Evaluate the need for real-time calibration features to maintain accuracy across wide dynamic ranges without manual intervention.

Current Regulation/Management Part Context

This part belongs to the PAC193x family of power monitors, which includes dual-channel (PAC1932) and triple-channel (PAC1933) variants. The PAC1934 specifically offers four channels, making it suitable for applications requiring comprehensive multi-rail analysis. It shares core architectural features with its siblings but expands channel count within the same footprint options.

Current Regulation/Management Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.