MAX472ESA+

Instrumentation, Op Amps, Buffer Amps Overview

The MAX472ESA+ is a precision, high-side current-sense amplifier manufactured by Analog Devices Inc./Maxim Integrated. It features a single channel and operates within a supply voltage range of 3V to 36V. The device has a maximum input bias current of 20µA and an input offset voltage of 120µV. It draws a typical operating supply current of 20µA and dissipates up to 727mW of power. The component functions in temperatures from 0°C to +70°C and is housed in an 8-pin SOIC package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Provides complete high-side current sensing capability for monitoring battery or DC power lines without interfering with ground paths.
• Supports bidirectional operation to monitor both charge and discharge currents simultaneously.
• Utilizes an external sense resistor configuration to accommodate higher current-sense capabilities beyond internal limits.

Instrumentation, Op Amps, Buffer Amps Applications

• Portable PCs including notebooks, subnotebooks, and palmtops
• Smart battery packs and cellular phones
• Battery-operated systems and energy management systems

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify availability status carefully as the MAX472ESA+ may be subject to limited supply conditions or discontinuation. Confirm the specific suffix matches required packaging and temperature ratings. Check for RoHS compliance documentation. Ensure the source is authorized to prevent counterfeit components. Validate lead times due to potential stock constraints.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high-side monitoring is required to preserve ground integrity in smart battery systems. Choose the external resistor variant (MAX472) over the internal resistor version (MAX471) if higher current sensing ranges are needed. Ensure the 3V to 36V supply range aligns with system power rails. Verify that the 0°C to +70°C commercial temperature range meets environmental requirements.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the MAX471/MAX472 series of precision current-sense amplifiers designed for portable electronics. It complements the MAX471 by offering flexibility through an external sense resistor. The series addresses critical power-line monitoring needs in battery-powered devices where ground path interference must be avoided.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult manufacturer cross-reference guides for potential alternatives if this specific package or suffix is unavailable.