MAX4372TESA Maxim Integrated Products, MAX4372TESA Datasheet

MAX4372TESA

Manufacturer Part Number

MAX4372TESA

Description

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX4372TESA.pdf (10 pages)

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The MAX4372 low-cost, precision, high-side current-

sense amplifier is available in a tiny, space-saving

SOT23-5-pin package. Offered in three gain versions

(T = 20V/V, F = 50V/V, and H = 100V/V), this device

operates from a single 2.7V to 28V supply and con-

sumes only 30µA. It features a voltage output that elimi-

nates the need for gain-setting resistors and is ideal for

today’s notebook computers, cell phones, and other

systems where battery/DC current monitoring is critical.

High-side current monitoring is especially useful in bat-

tery-powered systems since it does not interfere with

the ground path of the battery charger. The input com-

mon-mode range of 0 to 28V is independent of the sup-

ply voltage and ensures that the current-sense

feedback remains viable even when connected to a

2-cell battery pack in deep discharge.

The user can set the full-scale current reading by

choosing the device (T, F, or H) with the desired volt-

age gain and selecting the appropriate external sense

resistor. This capability offers a high level of integration

and flexibility, resulting in a simple and compact cur-

rent-sense solution. For higher bandwidth applications,

refer to the MAX4173T/F/H data sheet.

19-1548; Rev 3; 12/05

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Pin Configurations continued at end of datasheet.

GND

OUT

Low-Cost, UCSP/SOT23, Micropower, High-Side

Power-Management Systems

General-System/Board-Level Current Monitoring

Notebook Computers

Portable/Battery-Powered Systems

Smart-Battery Packs/Chargers

Cell Phones

Precision-Current Sources

TOP VIEW

MAX4372T/F/H

Current-Sense Amplifier with Voltage Output

SOT23-5

________________________________________________________________ Maxim Integrated Products

RS-

RS+

General Description

Pin Configurations

RS+

(BUMPS ON BOTTOM)

MAX4372T/F/H

Applications

TOP VIEW

UCSP

GND

OUT

RS-

♦ Low-Cost, Compact Current-Sense Solution

♦ 30µA Supply Current

♦ 2.7V to 28V Operating Supply

♦ 0.18% Full-Scale Accuracy

♦ 0.3mV Input Offset Voltage

♦ Low 1.5Ω Output Impedance

♦ Three Gain Versions Available

♦ Wide 0 to 28V Common-Mode Range,

♦ Available in a Space-Saving 5-Pin SOT23 Package

Note: Gain values are as follows: 20V/V for the T version, 50V/V

for the F version, and 100V/V for the H version.

Ordering Information continued at end of datasheet.

UCSP is a trademark of Maxim Integrated Products, Inc.

MAX4372TEUK-T

MAX4372TESA

MAX4372TEBT-T

Independent of Supply Voltage

and 3 x 2 UCSP™ (1mm x 1.5mm) Package

+2.7V TO +28V

CONVERTER

20V/V (MAX4372T)

50V/V (MAX4372F)

100V/V (MAX4372H)

PART

A/D

0.1µF

Typical Operating Circuit

GND

OUT

-40°C to +85°C

-40°C to +85°C 3 x 2 UCSP

TEMP RANGE PIN-PACKAGE

MAX4372T/F/H

Ordering Information

RS+

RS-

SENSE

5 SOT23-5

8 SO

0 TO 28V

SENSE

LOAD

Features

BATTERY

LOAD/

MARK

ADIU

TOP

ACX

—

Related parts for MAX4372TESA

MAX4372TESA Summary of contents

Page 1

... Available in a Space-Saving 5-Pin SOT23 Package and UCSP™ (1mm x 1.5mm) Package PART Applications MAX4372TEUK-T MAX4372TESA MAX4372TEBT-T Note: Gain values are as follows: 20V/V for the T version, 50V/V for the F version, and 100V/V for the H version. Ordering Information continued at end of datasheet. ...

Page 2

Low-Cost, UCSP/SOT23, Micropower, High-Side Current-Sense Amplifier with Voltage Output ABSOLUTE MAXIMUM RATINGS V , RS+, RS- to GND ...........................................-0.3V to +30V CC OUT to GND ...........................................................-0.3V to +15V Differential Input Voltage ( ..............................±0.3V RS+ RS- Current into ...

Page 3

Low-Cost, UCSP/SOT23, Micropower, High-Side Current-Sense Amplifier with Voltage Output ELECTRICAL CHARACTERISTICS (continued 28V 2.7V to 28V +25°C.) (Note 1) A PARAMETER SYMBOL -3dB Bandwidth BW Gain Gain Accuracy OUT ...

Page 4

Low-Cost, UCSP/SOT23, Micropower, High-Side Current-Sense Amplifier with Voltage Output (V = 12V 12V 100mV RS+ SENSE SUPPLY CURRENT vs. SUPPLY VOLTAGE 35.0 32 +100V +50V/V 30 ...

Page 5

Low-Cost, UCSP/SOT23, Micropower, High-Side Current-Sense Amplifier with Voltage Output (V = 12V 12V 100mV RS+ SENSE MAX4372T SMALL-SIGNAL TRANSIENT RESPONSE MAX4372T toc10 V SENSE V OUT 20µs/div MAX4372T LARGE-SIGNAL TRANSIENT RESPONSE V SENSE V ...

Page 6

Low-Cost, UCSP/SOT23, Micropower, High-Side Current-Sense Amplifier with Voltage Output PIN SOT23 SO UCSP — — _______________Detailed Description The MAX4372 high-side current-sense amplifier ...

Page 7

Low-Cost, UCSP/SOT23, Micropower, High-Side Current-Sense Amplifier with Voltage Output Table 1. Recommended Component Values FULL-SCALE LOAD CURRENT, I (A) LOAD 0 Using a PC Board Trace the cost issue and ...

Page 8

Low-Cost, UCSP/SOT23, Micropower, High-Side Current-Sense Amplifier with Voltage Output Ordering Information (continued) PART TEMP RANGE PIN-PACKAGE MAX4372FEUK-T -40°C to +85°C 5 SOT23-5 MAX4372FESA -40°C to +85° MAX4372FEBT-T -40°C to +85° UCSP MAX4372HEUK-T -40°C to +85°C ...

Page 9

Low-Cost, UCSP/SOT23, Micropower, High-Side Current-Sense Amplifier with Voltage Output (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages TOP VIEW ...

Page 10

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2005 Maxim Integrated Products Package Information (continued) Printed USA is a registered trademark of Maxim Integrated Products, Inc ...

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