MAX4376TAUK+T

Instrumentation, Op Amps, Buffer Amps Overview

The MAX4376TAUK+T is a single-channel high-side current-sense amplifier from the MAX4376 family, manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of +3V to +28V and features an input common-mode range of 0V to +28V, independent of the supply voltage. The device provides a fixed internal gain of +20 V/V with a typical full-scale accuracy of ±0.5%. It draws 1mA of supply current per amplifier and offers a bandwidth of 2MHz at this gain setting. The output can drive up to 2mA into a ground-referenced load. It is qualified under AEC-Q100 standards for automotive applications and operates over a temperature range of -40°C to +125°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• High-side current monitoring capability with a common-mode input range extending down to 0V, allowing operation even during deep battery discharge conditions.
• Integrated buffered voltage output that eliminates the need for external gain-setting resistors, providing flexibility through selectable internal gains.
• Automotive-grade qualification ensuring reliability in harsh environments across the full extended temperature range.
• Compact physical footprint utilizing a space-saving 5-pin SOT23 package suitable for portable and mobile designs.

Instrumentation, Op Amps, Buffer Amps Applications

• Notebook computers
• Cell phones
• Battery chargers
• Fuel gauges in PC
• Portable/battery-powered systems

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix '+T' indicates tape-and-reel packaging when sourcing components. Confirm the '/V' designation if automotive qualification is required, as standard parts may differ. Ensure the ordering code matches the exact gain version needed, as the 'T' suffix specifically denotes the +20 V/V gain configuration. Cross-reference the manufacturer's latest datasheet revision to confirm pinout and electrical characteristics remain consistent with previous releases.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when a single-channel high-side solution is required with a fixed gain of +20 V/V. It is appropriate for systems where the sense resistor voltage drop must be amplified for ADC conversion without external precision resistors. Consider the 2MHz bandwidth for control loop stability in switching regulators. Evaluate the 1mA supply current against power budget constraints for battery-operated devices requiring continuous monitoring.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the MAX4376/MAX4377/MAX4378 family of precision high-side current-sense amplifiers. While the MAX4376 is a single-channel device, the family also includes dual (MAX4377) and quad (MAX4378) variants. These devices share similar electrical characteristics but differ in channel count and package options, such as µMAX or TSSOP. The family is designed to simplify current sensing in space-constrained applications like mobile electronics and automotive systems.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct substitutes include other MAX4376 variants with different gain settings, such as MAX4376FAUK+T (+50 V/V) or MAX4376HAUK+T (+100 V/V), provided the system design accommodates the altered gain. Automotive-qualified versions like MAX4376TAUK/V+T offer identical functionality with specified reliability standards. Verify pin compatibility and thermal performance when transitioning between packages.