Overview
The Allegro MicroSystems ACS758LCB-100U-PFF-T is a high-precision current sensor IC designed for accurate AC or DC current sensing. This device is part of the ACS758 family, which offers economical and precise solutions for various applications. The ACS758LCB-100U-PFF-T features a thermally enhanced, fully integrated Hall-effect-based linear current sensor with a 100 µΩ current conductor, ensuring low power loss and high accuracy.
The device operates on a single supply voltage of 3.0 to 5.5 V and has a typical bandwidth of 120 kHz, making it suitable for applications requiring fast response times. The output voltage is linearly proportional to the sensed current, and the device is factory-trimmed for accuracy and stability.
Key Specifications
| Characteristic | Symbol | Min. | Typ. | Max. | Units |
|---|---|---|---|---|---|
| Supply Voltage | VCC | 3.0 | 5.0 | 5.5 | V |
| Primary Sampled Current | IP | -100 | 100 | A | |
| Sensitivity at 25°C | Sens(TA) | 20 | mV/A | ||
| Bandwidth | BWi | 120 kHz | |||
| Rise Time | tr | 3 µs | |||
| Operating Temperature Range | TOP | -40°C | 150°C | ||
| Accuracy | ±1.5% |
Key Features
- High Sensing Range: Capable of measuring currents up to ±100 A with high accuracy.
- Linear Output: Provides an analog voltage output linearly proportional to the sensed current.
- Wide Operating Voltage: Operates from 3.0 to 5.5 V, suitable for various power supply configurations.
- High Bandwidth: Supports wide frequency response up to 120 kHz.
- High Accuracy: Ensures precise current measurement with a tolerance of ±1.5%.
- Thermally Enhanced: Features a thermally enhanced package for improved thermal performance.
- Electrical Isolation: The conductive path is electrically isolated from the signal leads, eliminating the need for opto-isolators.
- Lead-Free and RoHS Compliant: The device is lead-free and RoHS compliant, with 100% matte tin-plated leads and an oxygen-free copper leadframe.
Applications
- Power Supplies: Used for monitoring current flow and providing feedback for control loops in power supplies.
- Motor Control: Utilized for monitoring the current drawn by motors, simplifying motor control algorithms and improving efficiency.
- Battery Management Systems: Provides precise current measurement for monitoring battery charging and discharging cycles in electric vehicles and renewable energy systems.
- Industrial Automation: Used in machinery and equipment to monitor current consumption, supporting fast response times in control systems.
- Smart Home Applications: Enables real-time current measurement for optimizing energy usage and improving overall system efficiency in smart home devices.
Q & A
- What is the primary function of the ACS758LCB-100U-PFF-T?
The primary function is to provide an accurate measurement of AC or DC currents up to ±100 A.
- What is the operating voltage range of the ACS758LCB-100U-PFF-T?
The device operates on a single supply voltage of 3.0 to 5.5 V.
- What is the typical bandwidth of the ACS758LCB-100U-PFF-T?
The typical bandwidth is 120 kHz.
- How accurate is the current measurement provided by the ACS758LCB-100U-PFF-T?
The device ensures precise current measurement with an accuracy of ±1.5%.
- What are the common applications of the ACS758LCB-100U-PFF-T?
Common applications include power supplies, motor control, battery management systems, industrial automation, and smart home devices.
- Is the ACS758LCB-100U-PFF-T lead-free and RoHS compliant?
Yes, the device is lead-free and RoHS compliant.
- What is the internal resistance of the current conductor in the ACS758LCB-100U-PFF-T?
The internal resistance of the current conductor is 100 µΩ typical.
- Does the ACS758LCB-100U-PFF-T require external signal conditioning?
It may require external signal conditioning for specific applications.
- What is the operating temperature range of the ACS758LCB-100U-PFF-T?
The operating temperature range is -40°C to 150°C.
- What type of package is the ACS758LCB-100U-PFF-T available in?
The device is available in a standard SOIC package with 5-CB formed leads.
