INA231AIYFDT

Current Regulation/Management Overview

The INA231AIYFDT is a high-precision current shunt and power monitor featuring a 1.8-V I2C-compatible interface with 16 programmable addresses. It supports bidirectional current measurement on the high side or low side, detecting bus voltages from 0 V to 28 V. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V, consuming a typical supply current of 330 μA. It provides direct reading of current in amperes and power in watts through programmable calibration values, conversion times, and averaging options integrated with an internal multiplier. The component is rated for operation between -40°C and +125°C.

Current Regulation/Management Feature Summary

• Supports bidirectional current sensing in both high-side and low-side configurations
• Provides direct digital readout of current and power values via programmable calibration
• Features a 1.8-V I2C interface with sixteen configurable address options
• Includes programmable alert thresholds for enhanced system protection

Current Regulation/Management Applications

• High-side or low-side current monitoring in industrial systems
• Power management supervision in portable electronics
• Over-current protection circuits requiring precise threshold detection
• Battery management systems needing bidirectional current tracking

Current Regulation/Management Procurement Notes

Verify that the specific suffix AIYFDT corresponds to the tape-and-reel packaging variant intended for surface-mount assembly. Confirm that the 1.8-V I2C logic levels are compatible with the host microcontroller's communication interface. Ensure the operating temperature range meets the environmental requirements of the target application. Check for any specific ordering restrictions or regional availability constraints associated with this Texas Instruments part number before finalizing procurement plans.

Current Regulation/Management Selection Notes

Select the INA231AIYFDT when precise bidirectional current and power monitoring is required within a 28-V bus system. Choose this model over variants like the INA231B if continuous conversion startup behavior is preferred rather than low-power shutdown modes. Consider the 1.8-V I2C compatibility for integration with low-voltage digital controllers. Evaluate the need for programmable alert thresholds and averaging features to reduce host processing load in complex monitoring architectures.

Current Regulation/Management Part Context

The INA231 belongs to Texas Instruments' family of current shunt and power monitors designed for high-accuracy applications. This specific part number represents the AIYFDT package variant, which utilizes a small-outline package suitable for automated surface-mount manufacturing processes. It complements other devices in the series by offering advanced digital interfaces and programmable features for sophisticated power management solutions.

Current Regulation/Management Replacement Considerations

The INA231AIYFDR serves as a direct functional substitute differing only in packaging format (tape-and-reel versus tube). Other members of the INA231 family may offer different startup modes but share similar electrical characteristics. Verify pin compatibility and interface specifications when considering alternative current monitor components from the same manufacturer.

Current Regulation/Management FAQ

What is the maximum bus voltage supported by the INA231?

The INA231 supports bus voltage measurements ranging from 0 V to 28 V.

Does the INA231 support high-side and low-side sensing?

Yes, the device is capable of bidirectional current measurement in both high-side and low-side configurations.

How many programmable addresses are available for the I2C interface?

The INA231 provides 16 programmable addresses for its 1.8-V I2C-compatible interface.