INA229AQDGSRQ1

Current Regulation/Management Overview

The INA229AQDGSRQ1 is an AEC-Q100 qualified, high-precision current and power monitor designed for automotive applications. It features a 20-bit resolution with 0.5% accuracy across the operating temperature range. The device supports both high-side and low-side sensing with a common-mode voltage range of -4V to +85V. Powered by a 2.7V to 5.5V supply, it draws 640µA of quiescent current. Operating temperatures span from -40°C to +125°C in a VSSOP-10 package.

Current Regulation/Management Feature Summary

• Provides precise measurement of bus voltage, shunt voltage, load current, and instantaneous power
• Supports flexible high-side or low-side current sensing configurations
• Delivers high accuracy with 20-bit resolution for detailed system monitoring

Current Regulation/Management Applications

• Battery management systems in hybrid electric vehicles
• Electric vehicle power distribution units
• Automotive charging infrastructure monitoring
• High-voltage battery pack cell balancing circuits

Current Regulation/Management Procurement Notes

Verify the complete part number including suffixes against official Texas Instruments documentation to ensure correct packaging and qualification status. Confirm that the specific revision matches project requirements. Check for any recent product change notifications regarding assembly sites or materials. Ensure compatibility with automotive reliability standards before finalizing procurement decisions.

Current Regulation/Management Selection Notes

Select this component when high precision and wide common-mode voltage range are required in automotive environments. Consider the 20-bit resolution for applications demanding detailed power analysis. Evaluate the VSSOP-10 package size against board space constraints. Verify that the 85V common-mode range aligns with the system's maximum bus voltage levels.

Current Regulation/Management Part Context

This device belongs to the INA229 family of current and power monitors. It is specifically qualified under the AEC-Q100 standard for automotive use. The component serves as a critical interface between high-voltage power stages and low-voltage control processors in modern electric and hybrid vehicles.

Current Regulation/Management Replacement Considerations

Consult official substitution guides for compatible alternatives within the INA22x series. Verify pinout compatibility and electrical parameter equivalence before replacing.