INA219AIDCNT

Current Regulation/Management Overview

The INA219AIDCNT is a current and power monitor IC from Texas Instruments, featuring an I2C interface. It measures shunt voltage and bus voltage with high accuracy. The device operates on a single 3V to 5.5V supply. It includes programmable calibration registers for direct current and power reading. The input common-mode range extends from 0V to 26V. Accuracy is specified at ±1%. The component utilizes an 8-pin SOT-23 package.

Current Regulation/Management Feature Summary

• Integrated I2C or SMBus compatible communication interface
• Simultaneous measurement of shunt and bus voltages
• Programmable calibration for direct current and power readout

Current Regulation/Management Applications

• Battery management systems
• Power monitoring in portable electronics
• Over-current protection circuits
• Current limiting in industrial applications

Current Regulation/Management Procurement Notes

Verify the specific suffix 'CNT' against the manufacturer's official documentation to confirm packaging details and tape-and-reel specifications. Ensure the A-grade accuracy rating aligns with system requirements. Cross-reference the pinout and thermal characteristics with the final datasheet before integration.

Current Regulation/Management Selection Notes

Select this component when bidirectional current sensing and integrated power calculation are required via a digital interface. The wide common-mode range supports various bus voltages. Consider the SOT-23 package size for space-constrained designs. Verify that the I2C address configuration meets the system topology needs.

Current Regulation/Management Part Context

This part belongs to the INA219 series of current monitors. It provides a complete solution for measuring current and power in low-side or high-side configurations. The series is designed for applications requiring precise monitoring without external microcontrollers performing complex calculations.

Current Regulation/Management Replacement Considerations

Check for INA219 variants with different accuracy grades or packages. Confirm compatibility with existing PCB footprints and software drivers if substituting.