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参数资料
型号： MAX4070AUA
厂商： MAXIM INTEGRATED PRODUCTS INC
元件分类： 电源管理
英文描述： Bidirectional, High-Side, Current-Sense Amplifiers with Reference
中文描述： POWER SUPPLY SUPPORT CKT, PDSO8
封装： MICRO, SOP-8
文件页数： 1/16页
文件大小： 472K
代理商： MAX4070AUA
General Description
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 fea-
ture 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 V
CC
, while discharge current is given from
2.5V to GND. The MAX4071 is similar, but with a refer-
ence 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 package.
Applications
Notebook Fuel Gauging
Smart-Battery Packs/Chargers
Motor Control
Power-Management Systems
Cell-Phone Battery-Current Monitoring
Features
o
Bidirectional, Compact, Current-Sense Solution
o
Total Output Error Less than 1.5%
o
Selectable Gain of 50V/V or 100V/V
o
Wide 1.35V to 24V Common-Mode Range
Independent of Supply Voltage
o
2.7V to 24V Single-Supply Operation
o
Internal Precision Reference
Adjustable (MAX4069)
2.50V (MAX4070)
1.50V (MAX4071)
o
Low 100μA Supply Current
o
10μA Supply Current in Shutdown
o
Available in Space-Saving Packages
8-Pin Thin QFN (MAX4070/MAX4071/MAX4072)
8-Pin μMAX (MAX4070/MAX4071MAX4072)
10-Pin μMAX (MAX4069)
Ordering Information
M
Bidirectional, High-Side, Current-Sense
Amplifiers with Reference
________________________________________________________________
Maxim Integrated Products
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.
1
MAX4070
V
BATT
= 1.35V TO 24V
V
CC
= 3.6V TO 24V
FROM BATTERY
CHARGER
R
SENSE
LOAD
TO ADC
2.5V
V
CC
GSEL
GND
RS-
RS+
REFOUT
OUT
SHDN
Typical Operating Circuit
19-2423; Rev 2; 1/03
PART
TEMP RANGE
PIN-PACKAGE
TOP
MARK
—
—
ABN
—
ABO
—
ABP
MAX4069
AUB
MAX4070
AUA
MAX4070ATA
MAX4071
AUA
MAX4071ATA
MAX4072
AUA
MAX4072ATA
*
EP = Exposed paddle.
-40
°
C to +125
°
C 10 μMAX
-40
°
C to +125
°
C 8 μMAX
-40
°
C to +125
°
C 8 Thin QFN-EP*
-40
°
C to +125
°
C 8 μMAX
-40
°
C to +125
°
C 8 Thin QFN-EP*
-40
°
C to +125
°
C 8 μMAX
-40
°
C to +125
°
C 8 Thin QFN-EP*
Pin Configurations appear at end of data sheet.
Selector Guide
PART
REFERENCE
SUPPLY
VOLTAGE
RANGE (V)
COMMON-
MODE RANGE
(V)
MAX4069
MAX4070
MAX4071
MAX4072
ADJUSTABLE
2.5V
1.5V
EXTERNAL
2.7 to 24
3.6 to 24
2.7 to 24
2.7 to 24
1.35 to 24
1.35 to 24
1.35 to 24
1.35 to 24
相关PDF资料
PDF描述
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相关代理商/技术参数
参数描述
MAX4070AUA+ 功能描述:电流灵敏放大器 Bidirectional High Side Crnt-Sense Amp RoHS:否 制造商:Texas Instruments 通道数量: 共模抑制比（最小值）:110 dB 输入补偿电压:80 uV 电源电压-最大:5.5 V 电源电压-最小:2.7 V 电源电流:350 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-16 封装:Reel
MAX4070AUA+T 功能描述:电流灵敏放大器 Bidirectional High Side Crnt-Sense Amp RoHS:否 制造商:Texas Instruments 通道数量: 共模抑制比（最小值）:110 dB 输入补偿电压:80 uV 电源电压-最大:5.5 V 电源电压-最小:2.7 V 电源电流:350 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-16 封装:Reel
MAX4070AUA-T 功能描述:电流灵敏放大器 Bidirectional High Side Crnt-Sense Amp RoHS:否 制造商:Texas Instruments 通道数量: 共模抑制比（最小值）:110 dB 输入补偿电压:80 uV 电源电压-最大:5.5 V 电源电压-最小:2.7 V 电源电流:350 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-16 封装:Reel
MAX40-70CA 制造商:MDE 制造商全称:MDE Semiconductor, Inc. 功能描述:HIGH CURRENT TRANSIENT VOLTAGE SUPPRESSOR (TVS) DIODE STAND-OFF VOLTAGE 12 TO 150 Volts 40000 Watt Peak Pulse Power
MAX4071 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Bidirectional, High-Side, Current-Sense Amplifiers with Reference
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