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MAX4173, MAX4173F, MAX4173H, MAX4173T
Low-Cost, SOT23, Voltage-Output, High-Side Current-Sense Amplifier

Overview

Technical Documents

Ordering Info

User Comments (0)

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Status

Active: In Production.

Data Sheet

FULL DATA SHEET Download Rev 4 (PDF, 216kB) E-Mail

Description

FULL DATA SHEET Download Rev 4 (PDF, 216kB) E-Mail 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 package.

An evaluation kit is available: MAX4173EVKIT

Key Features		Applications/Uses
Low-Cost, Compact Current-Sense Solution High Accuracy +2V to +28V Common-Mode Range, Functional Down to 0V, Independent of Supply Voltage Three Gain Versions Available +20V/V (MAX4173T) +50V/V (MAX4173F) +100V/V (MAX4173H) ±0.5% Full-Scale Accuracy ±3mV Input Offset Voltage (MAX4173T) Wide 1.7MHz Bandwidth (MAX4173T) 420µA Supply Current Available in Space-Saving SOT23 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
Application Note 746	High-Side Current-Sense Measurement: Circuits and Principles
Application Note 3888	Performance of current-sense amplifiers with input series resistors
Application Note 3906	Creating a Bidirectional Current-Sense Amplifier from Two Unidirectional Current-Sense Amplifiers
Application Note 4235	Two Methods for Shutting Down a Current-Sense Amplifier
Application Note 4438	Protect Current-Sense Amplifiers Against Overvoltage Transients

Evaluation Kits
MAX4173EVKIT	Evaluation Kit for the MAX4173

Design Guides

Amplifiers and Comparators (PDF)

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

Software/Models

MAX4173LTR Test Circuit File

MAX4173T Macromodel

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; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product 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.

Filters

Part Number: Package: Any -------- N.SO SOT Temperature: Any -------- -40°C to +85°C Tape and Reel

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: Lead Free Materials Analysis
MAX4173FESA-T			Active	N.SO;8 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
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
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
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+			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-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+			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
MAX4173HESA-T			Active	N.SO;8 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
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: Lead Free 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
MAX4173T	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX4173TESA-T			Active	N.SO;8 pin 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
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
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

Related Products
MAX4173EVKIT	Evaluation Kit for the MAX4173
More Like This: View Product Families for Similar Products See All Current Sense Amplifiers (30 Products)

More Information
Topmark Coding	MAX4173AF
Topmark Coding	MAX4173AH
Topmark Coding	MAX4173AT
Topmark Coding	MAX4173F
Topmark Coding	MAX4173H
Topmark Coding	MAX4173T
Topmark Coding	MAX4173AF
Topmark Coding	MAX4173AH
Topmark Coding	MAX4173AT
Topmark Coding	MAX4173F
Topmark Coding	MAX4173H
Topmark Coding	MAX4173T
Topmark Coding	MAX4173AF
Topmark Coding	MAX4173AH
Topmark Coding	MAX4173AT
Topmark Coding	MAX4173F
Topmark Coding	MAX4173H
Topmark Coding	MAX4173T
Topmark Coding	MAX4173AF
Topmark Coding	MAX4173AH
Topmark Coding	MAX4173AT
Topmark Coding	MAX4173F
Topmark Coding	MAX4173H
Topmark Coding	MAX4173T

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Document Ref.: 19-1434 Rev 4; 2010-08-17
This page last modified: 2010-08-17