Datasheet > MAX4070

MAX4070

更新时间： 2024-11-30 14:57:23

品牌	Logo	应用领域
亚德诺 - ADI		放大器
页数	文件大小	规格书
14页	2147K
描述
双向、高边、电流检测放大器，内置电压基准

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中文翻译

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数据手册

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MAX4070 数据手册

MAX4069–MAX4072

Bidirectional, High-Side, Current-Sense

Amplifiers with Reference

General Description

Features

The MAX4069–MAX4072 low-cost, bidirectional, high-

side, current-sense amplifiers are ideal for monitoring

battery charge and discharge currents in notebooks, cell

phones, and other portable equipment. They feature up

to 24V input common-mode voltage range, low 100µA

supply current (which drops to only 10µA in shutdown),

and a total output error of less than 1.5%. The wide 1.35V

to 24V input common-mode range is independent of the

supply voltage, ensuring that the current-sense feedback

remains accurate even when connected to a battery pack

in deep discharge.

● Bidirectional, Compact, Current-Sense Solution

● Total Output Error Less than 1.5%

● Selectable Gain of 50V/V or 100V/V

● Wide 1.35V to 24V Common-Mode Range

Independent of Supply Voltage

● 2.7V to 24V Single-Supply Operation

● Internal Precision Reference

•ꢀ Adjustable (MAX4069)

•ꢀ 2.50V (MAX4070)

•ꢀ 1.50V (MAX4071)

To achieve maximum flexibility, an external current-sense

resistor is used along with a Gain Select pin to choose

either 50V/V or 100V/V. A single output pin continuously

monitors the transition from charge to discharge and

avoids the need for a separate polarity output. The

MAX4070 contains an internal 2.5V reference. The charging

current is represented by an output voltage from 2.5V to

●

Lowꢀ100μAꢀSupplyꢀCurrent

10μAꢀSupplyꢀCurrentꢀinꢀShutdown

● Available in Space-Saving Packages

•ꢀ 8-Pin Thin QFN (MAX4070/MAX4071/MAX4072)

•ꢀ 8-PinꢀμMAXꢀ(MAX4070/MAX4071/MAX4072)

•ꢀ 10-PinꢀμMAXꢀ(MAX4069)

, while discharge current is given from 2.5V to GND.

The MAX4071 is similar, but with a reference voltage of

1.5V. The MAX4069 has an adjustable reference voltage,

set by two external resistors. The MAX4072 has an input

for an external reference.

Ordering Information

TOP

MARK

PART

TEMP RANGE PIN-PACKAGE

MAX4069AUB+ -40°C to +125°C 10 µMAX

MAX4070AUA+ -40°C to +125°C 8 µMAX

MAX4070ATA+ -40°C to +125°C 8 Thin QFN-EP*

MAX4071AUA+ -40°C to +125°C 8 µMAX

MAX4071ATA+ -40°C to +125°C 8 Thin QFN-EP*

MAX4072AUA+ -40°C to +125°C 8 µMAX

MAX4072ATA+ -40°C to +125°C 8 Thin QFN-EP*

*EP = Exposed pad.

—

The MAX4069/MAX4071/MAX4072 operate from a 2.7V

to 24V single supply. The MAX4070 operates from a

3.6V to 24V single supply. All devices are specified over

the automotive operating temperature range, -40°C to

+125°C. The MAX4070/MAX4071/MAX4072 are available in

8-pin µMAX and 8-pin thin QFN packages. The MAX4069

—

ADH

—

ADI

—

is available in a 10-pin µMAX package.

ADJ

Applications

● Notebook Fuel Gauging

● Smart-Battery Packs/Chargers

● Motor Control

● Power-Management Systems

● Cell-Phone Battery-Current Monitoring

Typical Operating Circuit

FROM BATTERY

CHARGER

SENSE

BATT

= 1.35V TO 24V

LOAD

RS-

RS+

= 3.6V TO 24V

MAX4070

μMAX is a registered trademark of Maxim Integrated Products,

Inc.

GSEL

SHDN

OUT

TO ADC

REFOUT

2.5V

Pin Configurations and Selector Guide appear at end of

data sheet.

GND

19-2423; Rev 4; 11/16

12 3 4 5 6 7...14

中文翻译

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与MAX4070相关器件

型号	品牌	获取价格	描述	数据表
MAX4070AGA	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, BICMOS, PQFP8, 3 X 3 MM, MO-220EEC-2, QFN-
MAX4070ATA	MAXIM	获取价格	Bidirectional, High-Side, Current-Sense Amplifiers with Reference
MAX4070ATA+	MAXIM	获取价格	Bidirectional, High-Side, Current-Sense Amplifiers with Reference
MAX4070ATA+T	ROCHESTER	获取价格	SPECIALTY ANALOG CIRCUIT, DSO8, 3 X 3 MM, 0.80 MM HEIGHT, EXPOSED PAD, QFN-8
MAX4070ATA+T	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, 3 X 3 MM, 0.80 MM HEIGHT, EXPOSED PAD, QFN-8
MAX4070AUA	MAXIM	获取价格	Bidirectional, High-Side, Current-Sense Amplifiers with Reference
MAX4070AUA+	MAXIM	获取价格	暂无描述
MAX4070AUA+T	MAXIM	获取价格	暂无描述
MAX40-70CA	MDE	获取价格	HIGH CURRENT TRANSIENT VOLTAGE SUPPRESSOR (TVS) DIODE STAND-OFF VOLTAGE 12 TO 150 Volts 40
MAX4071	MAXIM	获取价格	Bidirectional, High-Side, Current-Sense Amplifiers with Reference

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