INA301A3QDGKTQ1

Current Regulation/Management Overview

The INA301A3QDGKTQ1 is an automotive-grade current-sensing amplifier manufactured by Texas Instruments. It features a high common-mode voltage range of 0V to 36V and operates on a single supply voltage between 2.7V and 5.5V. The device provides a differential output with a fixed gain of 20 V/V, enabling precise monitoring of high-side or low-side currents. It is qualified under AEC-Q100 standards for automotive applications and functions reliably within an operating temperature range of -40°C to +125°C.

Current Regulation/Management Feature Summary

• Supports high-side and low-side current sensing configurations
• Provides a differential analog output proportional to the sensed current
• Operates with a wide common-mode voltage range up to 36V
• Qualified for automotive environments under AEC-Q100 standards

Current Regulation/Management Applications

• Automotive battery management systems
• Motor control current monitoring
• Power distribution unit protection circuits
• High-voltage load switching applications

Current Regulation/Management Procurement Notes

Verify the specific suffix 'A3' corresponds to the required gain configuration, as the base INA301 family includes variants with different gains such as 10 V/V or 20 V/V. Confirm that the QDGKT package designation matches the required thermal and mechanical specifications for the target PCB layout. Ensure the component meets the specific reliability requirements for the intended automotive zone.

Current Regulation/Management Selection Notes

Select this part when a fixed 20 V/V gain is required for accurate current measurement in high-common-mode voltage environments. Consider the differential output architecture if noise immunity is critical compared to single-ended solutions. Evaluate the input offset voltage and drift specifications against the minimum detectable current threshold of the application to ensure adequate resolution.

Current Regulation/Management Part Context

This component belongs to the INA301-Q1 series of current-sense amplifiers designed specifically for automotive electronics. The series offers various gain options and packaging styles to accommodate different board space and precision requirements. It integrates internal precision resistors to provide stable gain without external components, simplifying the design process for power management circuits.

Current Regulation/Management Replacement Considerations

Direct substitutes include other parts from the INA301-Q1 family with matching gain and package, such as INA301A1QDGKTQ1 or INA301A2QDGKTQ1, provided the gain difference is acceptable. Non-family alternatives must be evaluated for pin compatibility, common-mode voltage limits, and output drive capability.