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MAX4071AUA

製品説明
仕様・特性

MAX4069–MAX4072 Bidirectional, High-Side, Current-Sense Amplifiers with Reference General Description The MAX4069–MAX4072 low-cost, bidirectional, highside, 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. 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 VCC, 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. 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 is available in a 10-pin µMAX® Diagrams Functional package. Applications Notebook Fuel Gauging Smart-Battery Packs/Chargers Features ♦ 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) ♦ Low 100µA Supply Current ♦ 10µA Supply Current in Shutdown ♦ Available in Space-Saving Packages 8-Pin Thin QFN (MAX4070/MAX4071/MAX4072) 8-Pin µMAX (MAX4070/MAX4071MAX4072) 10-Pin µMAX (MAX4069) Ordering Information 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 — ABN — ABO — MAX4072ATA -40°C to +125°C 8 Thin QFN-EP* *EP = Exposed pad. ABP Typical Operating Circuit Motor Control Power-Management Systems Cell-Phone Battery-Current Monitoring TOP MARK — FROM BATTERY CHARGER RSENSE VBATT = 1.35V TO 24V RS- VCC = 3.6V TO 24V RS+ LOAD VCC MAX4070 GSEL µMAX is a registered trademark of Maxim Integrated Products, Inc. Pin Configurations appear at end of data sheet. Functional Diagramsand Selector Guide appear at end of Pin Configurations continued at end of data sheet. UCSP sheet. data is a trademark of Maxim Integrated Products, Inc. OUT SHDN REFOUT TO ADC 2.5V GND For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com. 19-2423; Rev 3; 11/08

ブランド

MAXIM

会社名

Maxim Integrated

本社国名

U.S.A

事業概要

アナログおよびミックスドシグナル半導体製品を設計、製造、販売している米国系の株式会社である。 マキシム・インテグレーテッドは、工業、通信、民生、コンピューティングの各市場向けに集積回路を開発しています

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