MAX4372TEUK+T,MAX4372TEUK+T,MAX4372TEUK+T,MAX4372TEBT+T,MAX4

For pricing, delivery, and ordering information,please contact Maxim Direct at 1-888-629-4642,or visit Maxim’s website at f9d0a5acf121dd36a22d8202.

General Description 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.

Applications Power-Management Systems General-System/Board-Level Current Monitoring Notebook Computers Portable/Battery-Powered Systems Smart-Battery Packs/Chargers Cell Phones Precision-Current Sources Pin Configurations

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.

+

Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.Features

o Low-Cost, Compact Current-Sense Solution o 30μA Supply Current

o 2.7V to 28V Operating Supply

o 0.18% Full-Scale Accuracy

o 0.3mV Input Offset Voltage

o Low 1.5ΩOutput Impedance

o Three Gain Versions Available

20V/V (MAX4372T)

50V/V (MAX4372F)

100V/V (MAX4372H)o High Accuracy +2V to +28V Common-Mode Range, Functional Down to 0V, Independent of Supply Voltage

o Available in a Space-Saving 5-Pin SOT23 Package and 3 x 2 UCSP?(1mm x 1.5mm) Package MAX4372T/F/H Low-Cost, UCSP/SOT23, Micropower, High-Side Current-Sense Amplifier with Voltage Output

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Typical Operating Circuit

19-1548; Rev 5; 5/11

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(V RS+= 0 to 28V, V CC = 2.7V to 28V, V SENSE = 0V, R LOAD = 1M Ω, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 1)

M A X 4372T /F /H

Low-Cost, UCSP/SOT23, Micropower, High-Side Current-Sense Amplifier with Voltage Output 2_______________________________________________________________________________________

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

V CC , RS+, RS- to GND...........................................-0.3V to +30V OUT to GND...........................................................-0.3V to +15V Differential Input Voltage (V RS+- V RS-)..............................±0.3V Current into Any Pin..........................................................±10mA Continuous Power Dissipation (T A = +70°C)

5-Pin SOT23 (derate 3.9mW/°C above +70°C)..........312.6mW 8-Pin SO (derate 7.4mW/°C above +70°C)................588.2mW 3 x 2 UCSP (derate 3.4mW/°C above +70°C)...........273.2mW

Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°C Soldering Temperature (reflow).......................................+300°C

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MAX4372T/F/H

Low-Cost, UCSP/SOT23, Micropower, High-Side Current-Sense Amplifier with Voltage Output

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ELECTRICAL CHARACTERISTICS (continued)

(V RS+= 0 to 28V, V CC = 2.7V to 28V, V SENSE = 0V, R LOAD = 1M Ω, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 1)

Note 1:All devices are 100% production tested at T A = +25°C. All temperature limits are guaranteed by design.Note 2:Guaranteed by PSR test.

Note 3:Guaranteed by OUT Voltage Error test.

Note 4:Output voltage is internally clamped not to exceed 12V.Note 5:V OS is extrapolated from the gain accuracy tests.

Note 6:Total OUT voltage error is the sum of gain and offset voltage errors.

Note 7:Measured at I OUT = -500μA (R LOAD = 4k Ωfor gain = 20V/V, R LOAD = 10k Ωfor gain = 50V/V, R LOAD = 20k Ωfor gain =

100V/V).

Note 8:6.25mV = 1/16 of 100mV full-scale voltage (C/16).Note 9:The device will not reverse phase when overdriven.

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M A X 4372T /F /H

Low-Cost, UCSP/SOT23, Micropower, High-Side Current-Sense Amplifier with Voltage Output 4_______________________________________________________________________________________

Typical Operating Characteristics

(V CC = 12V, V RS+= …… 此处隐藏：12378字，全部文档内容请下载后查看。喜欢就下载吧 ……