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ACS773LCB-050U-PFF-T

更新时间： 2024-11-12 01:01:55
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急速微 - ALLEGRO /
页数 文件大小 规格书
26页 1951K
描述
High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 μΩ Current Conductor

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ACS773  
High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth,  
Galvanically Isolated Current Sensor IC with 100 µΩ Current Conductor  
DESCRIPTION  
FEATURES AND BENEFITS  
• AEC-Q100 Grade 1 qualified  
• Typical of 2.5 μs output response time  
• 3.3 V supply operation  
The Allegro™ ACS773 family of current sensor ICs provide  
economicalandprecisesolutionsforACorDCcurrentsensing,  
idealformotorcontrol,loaddetectionandmanagement,power  
supply and DC-to-DC converter control, and inverter control.  
The 2.5 µs response time enables overcurrent fault detection  
in safety-critical applications.  
• Ultra-low power loss: 100 μΩ internal conductor resistance  
• Reinforced galvanic isolation allows use in economical,  
high-side current sensing in high-voltage systems  
• 4800 Vrms dielectric strength certified under UL60950-1  
• Industry-leading noise performance with greatly  
improved bandwidth through proprietary amplifier and  
filter design techniques  
• Integrated shield greatly reduces capacitive coupling  
from current conductor to die due to high dV/dt signals,  
and prevents offset drift in high-side, high-voltage  
applications  
• Greatly improved total output error through digitally  
programmed and compensated gain and offset over the  
full operating temperature range  
• Small package size, with easy mounting capability  
• Monolithic Hall IC for high reliability  
The device consists of a precision, low-offset linear Hall  
circuit with a copper conduction path located near the die.  
Applied current flowing through this copper conduction path  
generates a magnetic field which the Hall IC converts into a  
proportionalvoltage.Deviceaccuracyisoptimizedthroughthe  
close proximity of the magnetic signal to the Hall transducer.  
A precise, proportional output voltage is provided by the  
low-offset, chopper-stabilized BiCMOS Hall IC, which is  
programmed for accuracy at the factory. Proprietary digital  
temperature compensation technology greatly improves the  
IC accuracy and temperature stability.  
High-level immunity to current conductor dV/dt and stray  
electricfieldsisofferedbyAllegroproprietaryintegratedshield  
technology for low output voltage ripple and low offset drift  
in high-side, high-voltage applications.  
• Output voltage proportional to AC or DC currents  
• Factory-trimmed for accuracy  
• Extremely stable output offset voltage  
The output of the device increases when an increasing current  
flows through the primary copper conduction path (from  
terminal 4 to terminal 5), which is the path used for current  
sampling. The internal resistance of this conductive path is  
100 μΩ typical, providing low power loss.  
CB Certificate Number:  
US-29755-UL  
PACKAGE: 5-pin package (suffix CB)  
The thickness of the copper conductor allows survival of the  
device at high overcurrent conditions. The terminals of the  
conductive path are electrically isolated from the signal leads  
(pins 1 through 3). This allows the ACS773 family of sensor  
PFF  
Leadform  
Leadform  
Continued on the next page…  
Not to scale  
3.3 ꢀ  
1
5
4
ꢀCC  
ꢁP–  
ꢁPꢂ  
CBYP  
0.1 µF  
Application 1: the ACS773 outputs an analog  
signal, VOUT, that varies linearly with the  
bidirectional AC or DC primary sensed cur-  
rent, IP, within the range specified. RF and  
CF are for optimal noise management, with  
values that depend on the application.  
ACS773  
2
3
ꢁP  
GꢃD  
CF  
ꢀꢁOUT  
ꢀOUT  
RF  
Typical Application  
ACS773-DS, Rev. 5  
MCO-0000364  
March 14, 2019  
1234567...26

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