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MAX471ESA The Maxim Integrated MAX471ESA is a high-side current-sense amplifier designed for battery and DC power-line monitoring. It features an internal 35mOhm resistor for measuring currents up to +/-3A.
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MAX471ESA

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The Maxim Integrated MAX471ESA is a high-side current-sense amplifier designed for battery and DC power-line monitoring. It features an internal 35mOhm resistor for measuring currents up to +/-3A.
✓ Total Stock: 11 pcs
$ Price Range: $0.99

MAX471ESA Available from 1 distributor

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11 pcs
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MAX471ESA Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Current Rating
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MAX471ESA Description

Short technical summary and product information.

The MAX471ESA from Maxim Integrated is a complete, bidirectional, high-side current-sense amplifier. It is suitable for systems where battery or DC power-line monitoring is critical, such as portable PCs and telephones. The device includes an internal 35mOhm current-sense resistor, allowing it to measure battery currents up to +/-3A. It operates from a wide supply voltage range of 3V to 36V and consumes less than 100µA over temperature. An optional 18µA shutdown mode is also available.

 

The MAX471ESA's high-side monitoring capability is particularly useful in battery-powered systems as it does not interfere with ground paths of battery chargers or monitors. The output current can be converted to a ground-referred voltage with a single resistor, accommodating a broad range of battery voltages and currents. An open-collector SIGN output indicates current flow direction, enabling monitoring of battery charging or discharging status.

 

This amplifier is available in an 8-SOIC package. Note that this part is 'Not Recommended for New Designs' due to its manufacturing process no longer being available.

MAX471ESA Quick Information

Product Type: Current Sense Amplifier
Series: MAX471
Canonical Name: MAX471ESA High-Side Current-Sense Amplifier
Subcategory: Current Sense Amplifiers

MAX471ESA Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

MAX471ESA Estimated Pricing

Qty Low High
1+ $0.99 $0.99

Estimated market price range - modelled values for guidance only, not live distributor offers.

MAX471ESA Features

  • Measures battery currents up to +/-3A.
  • Internal 35mOhm current-sense resistor.
  • Operates from 3V to 36V supply.
  • Low quiescent current (<100µA).
  • 8-SOIC package.

MAX471ESA Applications

  • Ideal for battery monitoring.
  • Used in portable PCs.
  • Suitable for DC power-line monitoring.
  • Enables charge/discharge status monitoring.

MAX471ESA FAQs

5 frequently asked questions generated from this part’s specifications.
What is the current measurement range of the MAX471ESA?

The MAX471ESA measures battery currents up to +/-3A.

What is the supply voltage range for the MAX471ESA?

The MAX471ESA operates from a supply voltage range of 3V to 36V.

Does the MAX471ESA have an internal current sense resistor?

Yes, the MAX471ESA has an internal 35mOhm current-sense resistor.

What is the quiescent current of the MAX471ESA?

The MAX471ESA draws less than 100µA over temperature.

What package is the MAX471ESA available in?

The MAX471ESA is available in an 8-SOIC package.

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