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| 型号： | MAX4172ESA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/9页 |
| 文件大小： | 0K |
| 描述： | IC AMP PREC CURRENT-SENSE 8-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 放大器类型： | 电流检测 |
| 电路数： | 1 |
| -3db带宽： | 800kHz |
| 电流 - 输入偏压： | 50µA |
| 电压 - 输入偏移： | 1000µV |
| 电流 - 电源： | 800µA |
| 电流 - 输出 / 通道： | 1.75mA |
| 电压 - 电源，单路/双路(±)： | 3 V ~ 32 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
| 产品目录页面： | 1388 (CN2011-ZH PDF) |
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
MAX4172
Low-Cost, Precision, High-Side
Current-Sense Amplifier
_______________General Description
The MAX4172 is a low-cost, precision, high-side current-
sense amplifier for portable PCs, telephones, and other
systems where battery/DC power-line monitoring is criti-
cal. High-side power-line monitoring is especially useful in
battery-powered systems, since it does not interfere with
the battery charger’s ground path. Wide bandwidth and
ground-sensing capability make the MAX4172 suitable
for closed-loop battery-charger and general-purpose cur-
rent-source applications. The 0 to 32V input common-
mode range is independent of the supply voltage, which
ensures that current-sense feedback remains viable,
even when connected to a battery in deep discharge.
To provide a high level of flexibility, the MAX4172 func-
tions with an external sense resistor to set the range of
load current to be monitored. It has a current output that
can be converted to a ground-referred voltage with a sin-
gle resistor, accommodating a wide range of battery volt-
ages and currents.
An open-collector power-good output (PG) indicates
when the supply voltage reaches an adequate level to
guarantee proper operation of the current-sense amplifi-
er. The MAX4172 operates with a 3.0V to 32V supply
voltage, and is available in a space-saving, 8-pin MAX
or SO package.
________________________Applications
Portable PCs: Notebooks/Subnotebooks/Palmtops
Battery-Powered/Portable Equipment
Closed-Loop Battery Chargers/Current Sources
Smart-Battery Packs
Portable/Cellular Phones
Portable Test/Measurement Systems
Energy Management Systems
____________________________Features
o Low-Cost, High-Side Current-Sense Amplifier
o ±0.5% Typical Full-Scale Accuracy Over
Temperature
o 3V to 32V Supply Operation
o High Accuracy +2V to +32V Common-Mode
Range, Functional Down to 0V, Independent of
Supply Voltage
o 800kHz Bandwidth [VSENSE = 100mV (1C)]
200kHz Bandwidth [VSENSE = 6.25mV (C/16)]
o Available in Space-Saving MAX and SO
Packages
OUT
GND
FEEDBACK LOOP
LOW-COST BATTERY CHARGER/CURRENT SOURCE
VOUT = 500mV/A
ROUT
1k
100k
ANALOG OR
LOGIC SUPPLY
2A
0 TO 32V
IOUT =
VSENSE / 100
V+
RS+
RSENSE
50m
VSENSE
RS-
PG
MAX4172
POWER GOOD
LOAD/
BATTERY
LOW-COST
SWITCHING
REGULATOR
UNREGULATED
DC SUPPLY
3V TO 32V
__________________Pin Configuration
TOP VIEW
OUT
GND
N.C.
1
+
2
8
7
V+
PG
RS-
N.C.
RS+
MAX/SO
3
4
6
5
MAX4172
__________Typical Operating Circuit
19-1184; Rev 2; 10/12
PART
MAX4172ESA+
MAX4172EUA+
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
8 SO
8 MAX
______________Ordering Information
+
Denotes a lead(Pb)-free/RoHS-compliant package.
MAX is a registered trademark of Maxim Integrated Products, Inc.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4172ESA+ | 功能描述:电流灵敏放大器 Precision High-Side Current-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 |
| MAX4172ESA+T | 功能描述:电流灵敏放大器 Precision High-Side Current-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 |
| MAX4172ESA-T | 功能描述:电流灵敏放大器 Precision High-Side Current-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 |
| MAX4172EUA | 功能描述:电流灵敏放大器 Precision High-Side Current-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 |
| MAX4172EUA+ | 功能描述:电流灵敏放大器 Precision High-Side Current-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 |
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