INA231AIYFDR

Current Regulation/Management Overview

The INA231AIYFDR is a bidirectional current and power monitor featuring a 1.8-V I2C-compatible interface. It measures bus voltages from 0V to 28V and supports high-side or low-side sensing. The device operates on a single 2.7V to 5.5V supply with a typical quiescent current of 330μA. It provides direct reading of current in amperes and power in watts via programmable calibration, reducing host processor load. Accuracy includes a maximum gain error of 0.5% and offset voltage of 50μV. It features configurable averaging, programmable alert thresholds, and an operating temperature range of -40°C to +125°C.

Current Regulation/Management Feature Summary

• Provides bidirectional current and power monitoring with direct digital output for reduced host processing load.
• Supports both high-side and low-side current sensing within a 0V to 28V bus voltage range.
• Features a 1.8-V I2C-compatible interface with 16 programmable addresses for flexible system integration.

Current Regulation/Management Applications

• Industrial equipment current monitoring
• Power distribution unit (PDU) management
• Battery protection systems

Current Regulation/Management Procurement Notes

Verify the specific suffix 'YFFDR' against official Texas Instruments documentation to confirm package type and tape/reel specifications. Ensure compatibility with 1.8V logic levels for the I2C interface. Check for end-of-life notices or alternative recommendations if sourcing for new designs, as component availability may vary.

Current Regulation/Management Selection Notes

Select this component when precise bidirectional current and power measurement is required with minimal host CPU intervention. It is suitable for applications needing high accuracy (0.5% gain error) and support for both high-side and low-side configurations. Consider the 1.8V I2C interface requirement for system compatibility.

Current Regulation/Management Part Context

The INA231 belongs to Texas Instruments' family of current shunt and power monitors. It integrates an internal multiplier to calculate power directly, distinguishing it from basic shunt amplifiers. The AIYFFDR variant indicates a specific package and reel configuration within the broader INA231 product line designed for precision monitoring applications.

Current Regulation/Management Replacement Considerations

INA231AIYFFT is a listed substitute with identical electrical characteristics but potentially different packaging or status.

Current Regulation/Management FAQ

Does the INA231 support both high-side and low-side measurements?

Yes, the INA231 is designed to support both high-side and low-side current sensing configurations.

What is the maximum bus voltage the INA231 can monitor?

The INA231 can monitor bus voltages ranging from 0V to 28V.