INA3221AQRGVRQ1

Current Regulation/Management Overview

The INA3221AQRGVRQ1 is an AEC-Q100 qualified, triple-channel current and voltage monitor featuring a 13-bit analog-to-digital converter. It supports I2C and SMBus digital interfaces for data transmission. The device operates with a supply voltage range of 2.7V to 5.5V and handles common-mode voltages up to 26V. It offers high accuracy with a gain error of ±0.25% and a minimum common-mode rejection ratio of 105dB. The component functions within a temperature range of -40°C to +125°C and is housed in a 16-pin VQFN package.

Current Regulation/Management Feature Summary

• Provides simultaneous measurement of shunt voltage, bus voltage, and calculated power across three independent channels.
• Integrates programmable alert thresholds to trigger system responses during over-current or over-voltage conditions.
• Utilizes zero-drift architecture to maintain measurement precision across the specified operating temperature range.

Current Regulation/Management Applications

• Automotive battery management systems requiring multi-rail monitoring
• Electric vehicle traction inverter current sensing
• Industrial power distribution unit supervision

Current Regulation/Management Procurement Notes

Verify that the specific suffix 'Q1' confirms AEC-Q100 automotive qualification status against the manufacturer's official documentation. Ensure the ordering part number matches the required package variant and temperature rating. Confirm interface compatibility with the target system controller before finalizing procurement specifications.

Current Regulation/Management Selection Notes

Select this component when multi-channel monitoring is required within a 26V common-mode environment. The integrated power calculation reduces processor load compared to discrete solutions. Consider the 13-bit resolution and alert functionality for applications demanding precise fault detection without external comparators.

Current Regulation/Management Part Context

This device belongs to the INA3221 family of digital power monitors. It shares architectural similarities with other TI current sense amplifiers but distinguishes itself through its triple-channel capability and direct I2C output. The Q1 suffix indicates compliance with automotive reliability standards, differentiating it from commercial grade counterparts.

Current Regulation/Management Replacement Considerations

INA3221AIRGVQ1 is a verified alternative within the same product family offering identical functional specifications and automotive qualification.