Datasheet > MAX44284WAWT+

MAX44284WAWT+

更新时间： 2024-11-08 02:48:35

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
15页	1036K
描述
36V, Input Common-Mode, High-Precision, Low-Power Current-Sense Amplifier

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MAX44284WAWT+ 数据手册

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MAX44284

36V, Input Common-Mode, High-Precision,

Low-Power Current-Sense Amplifier

General Description

Beneﬁts and Features

● Supports Use of Small Current-Sense Resistors to

Improve Power-Supply Conversion Efficiency and

Measurement Accuracy

The MAX44284 is a high-side, current-sense amplifier

that operates with a 1.7V to 5.5V single supply and is

optimized for very low power operation with only 21µA of

quiescent current.

• Input Bias Current of 80nA (max)

The MAX44284 offers precision accuracy specifications

• Very Low 2μV Input Offset Voltage (MAX44284F/H)

of 2μV V

and gain error of 0.05%. The device features

• Extremely Low 50nV/°C Input Offset Tempco

Coefficient

an input common-mode voltage range from -0.1V to

+36V. This current-sense amplifier has a voltage output

and is offered in four different gain versions.

•

-0.1V to +36V Wide Input Common-Mode Range

•

Low 0.05% Gain Error

The MAX44284 is offered in small 6-bump, 0.4mm-pitch

WLP (1.3mm x 0.9mm) and 6-pin SOT23 packages and is

specified for operation over the -40°C to +125°C automotive

temperature range.

● Extends Battery Life

•

Low Supply Current of 21μA

1.7V to 5.5V Single Supply

Shutdown Input (Independent of V

)

Applications

● Smartphones and Tablets

● Notebook Computers

● DC-DC Current Sensing in Power Management

● Portable-/Battery-Powered Systems

● Medical Pulse Oximeters and Infusion Pumps

● Base Stations

● Four Fixed Gain Options Simplify Design

• 50V/V – MAX44284F

• 100V/V – MAX44284H

• 200V/V – MAX44284W

• 500V/V – MAX44284E

Ordering Information appears at end of data sheet.

Typical Application Circuit

I_LOAD

R_SENSE

V_BATT= UP TO 36V

RS+

RS-

LOAD

V_DD= 3.3V

MAX44284

V_DD= 3.3V

OUT

µC

ADC

19-6862; Rev 9; 5/19

12 3 4 5 6 7...15

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