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Status

Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 1.4MB) Download   E-Mail

Description

The MAX4173 low-cost, precision, high-side current-sense amplifier is available in a tiny SOT23-6 package. It features a voltage output that eliminates the need for gain-setting resistors and it is ideal for today's notebook computers, cell phones, and other systems where current monitoring is critical. High-side current monitoring is especially useful in battery-powered systems, since it does not interfere with the ground path of the battery charger. The input common-mode range of 0 to +28V is independent of the supply voltage and ensures that the current-sense feedback remains viable even when connected to a battery in deep discharge. The MAX4173's wide 1.7MHz bandwidth makes it suitable for use inside battery charger control loops. The combination of three gain versions and a user-selectable external sense resistor sets the full-scale current reading. This feature offers a high level of integration, resulting in a simple and compact current-sense solution. The MAX4173 operates from a single +3V to +28V supply, typically draws only 420µA of supply current over the extended operating temperature range (-40°C to +85°C), and is offered in the space-saving SOT23-6 package.

An evaluation kit is available:  MAX4173EVKIT  

Key Features		Applications/Uses
Low-Cost, Compact Current-Sense Solution Wide 0 to +28V Common-Mode Range Independent of Supply Voltage Three Gain Versions Available +20V/V (MAX4173T) +50V/V (MAX4173F) +100V/V (MAX4173H) ±0.5% Full-Scale Accuracy ±0.3mV Input Offset Voltage (MAX4173T) 420µA Supply Current Wide 1.7MHz Bandwidth (MAX4173T) +3V to +28V Operating Supply Available in Space-Saving SOT23-6 Package		Cell Phones General System/Board-Level Current Monitoring Notebook Computers PA Bias Control Portable Battery-Powered Systems Power-Management Systems Precision Current Sources Smart Battery Packs/Chargers

Diagram

Typical Operating Circuit

Application Notes

Application Note 714: Isolated Power Supplies for Telecom Applications - MAX4173 Application Note 746: High-Side Current-Sense Measurement: Circuits and Principles - MAX4173 Application Note 3888: Performance of Current-Sense Amplifiers with Input Series Resistors - MAX4173 Application Note 3906: Creating a Bidirectional Current-Sense Amplifier from Two Unidirectional Current-Sense Amplifiers - MAX4173 Application Note 4235: Two Methods for Shutting Down a Current-Sense Amplifier - MAX4173F Application Note 4438: Protect Current-Sense Amplifiers Against Overvoltage Transients - MAX4173

Evaluation Kits

MAX4173EVKIT

Design Guides

Amplifiers and Sensors (PDF)

Reliability Reports

Show FIT data for: MAX4173 Request Reliability Report for: MAX4173 MAX4173T MAX4173F MAX4173H

Software/Models

MAX4173LTR Test Circuit File MAX4173TGBW Test Circuit File MAX4173TSTR Test Circuit File MAX4173T Macromodel MAX4173LTR Test Circuit File MAX4173T Orcad Library MAX4173TGBW Test Circuit File MAX4173TSTR Test Circuit File

Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-23 of 23

MAX4173F	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX4173FESA			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX4173FESA-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX4173FESA+			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4173FESA+T			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4173FEUT+			Active	SOT;6 pin;9 mm² Outline Drawing: 21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4173FEUT			Active	SOT;6 pin;9 mm² Outline Drawing: 21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX4173FEUT-T			Active	SOT;6 pin;9 mm² Outline Drawing: 21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX4173FEUT+T			Active	SOT;6 pin;9 mm² Outline Drawing: 21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4173H	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX4173HESA			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX4173HESA-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX4173HESA+			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4173HESA+T			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4173HEUT+			Active	SOT;6 pin;9 mm² Outline Drawing: 21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4173HEUT			Active	SOT;6 pin;9 mm² Outline Drawing: 21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX4173HEUT-T			Active	SOT;6 pin;9 mm² Outline Drawing: 21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX4173HEUT+T			Active	SOT;6 pin;9 mm² Outline Drawing: 21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4173T	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX4173TESA			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX4173TESA-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX4173TESA+			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4173TESA+T			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4173TEUT+			Active	SOT;6 pin;9 mm² Outline Drawing: 21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4173TEUT-T			Active	SOT;6 pin;9 mm² Outline Drawing: 21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX4173TEUT+T			Active	SOT;6 pin;9 mm² Outline Drawing: 21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

Notes and Comments

Low-Cost, precision, voltage-output current-sense amplifier

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