Overview
The Allegro MicroSystems ACS758LCB-100B-PFF-T is a member of the ACS758 family of current sensor ICs, designed to provide economical and precise solutions for AC or DC current sensing. This device features a precision, low-offset linear Hall circuit with a copper conduction path, which generates a magnetic field that is converted into a proportional voltage by the Hall IC. The ACS758LCB-100B-PFF-T is optimized for accuracy and reliability, making it suitable for a variety of high-performance applications.
Key Specifications
| Characteristic | Symbol | Test Conditions | Min. | Typ. | Max. | Units |
|---|---|---|---|---|---|---|
| Supply Voltage | VCC | 3 | 5.0 | 5.5 | V | |
| Supply Current | ICC | Output open | 10 | 13.5 | mA | |
| Power-On Delay | tPOD | TA = 25°C | 10 | µs | ||
| Rise Time | tr | IP step = 60% of IP+, 10% to 90% rise time, TA = 25°C, COUT = 0.47 nF | 3 | µs | ||
| Propagation Delay Time | tPROP | TA = 25°C, COUT = 0.47 nF | 1 | µs | ||
| Response Time | tRESPONSE | Measured as sum of tPROP and tr | 4 | µs | ||
| Internal Bandwidth | BWi | -3 dB; TA = 25°C | ||||
| Primary Sampled Current | IP | -100 | 100 | A | ||
| Sensitivity | SensTA | Full scale of IP applied for 5 ms, TA = 25°C | 20 | mV/A |
Key Features
- High Accuracy and Reliability: The device features a precision, low-offset linear Hall circuit with a copper conduction path, ensuring high accuracy and reliability.
- Low Power Loss: The internal resistance of the conductive path is 100 µΩ typical, providing ultralow power loss.
- Galvanic Isolation: The terminals of the conductive path are electrically isolated from the signal leads, allowing for use in high-voltage systems without the need for opto-isolators.
- Integrated Shield: Allegro proprietary integrated shield technology reduces capacitive coupling and prevents offset drift in high-side, high-voltage applications.
- Thermally Enhanced Package: The device is packaged in a thermally enhanced, fully integrated package, ensuring robust performance in various environmental conditions.
- AEC-Q100 Qualified: The ACS758LCB-100B-PFF-T is AEC-Q100 qualified, making it suitable for automotive and other high-reliability applications.
Applications
- Motor Control: The device is used in motor control systems to monitor and manage current flow accurately.
- Load Detection and Management: It is employed in load detection and management systems to ensure efficient and safe operation.
- Power Supply and DC-to-DC Converter Control: The ACS758LCB-100B-PFF-T is used in power supply and DC-to-DC converter control to monitor current and maintain system stability.
- Inverter Control: It is utilized in inverter control systems to manage current flow and prevent overcurrent conditions.
- Overcurrent Fault Detection: The device is used for detecting overcurrent faults, ensuring the safety and reliability of the system.
Q & A
- What is the primary function of the ACS758LCB-100B-PFF-T? The primary function of the ACS758LCB-100B-PFF-T is to provide precise AC or DC current sensing solutions.
- What is the typical supply voltage for the ACS758LCB-100B-PFF-T? The typical supply voltage is 5.0 V, with a range of 3 to 5.5 V.
- What is the internal resistance of the conductive path in the ACS758LCB-100B-PFF-T? The internal resistance of the conductive path is 100 µΩ typical.
- Does the ACS758LCB-100B-PFF-T have galvanic isolation? Yes, the terminals of the conductive path are electrically isolated from the signal leads, providing galvanic isolation.
- What are some typical applications of the ACS758LCB-100B-PFF-T? Typical applications include motor control, load detection and management, power supply and DC-to-DC converter control, inverter control, and overcurrent fault detection.
- Is the ACS758LCB-100B-PFF-T AEC-Q100 qualified? Yes, the ACS758LCB-100B-PFF-T is AEC-Q100 qualified.
- What is the sensitivity of the ACS758LCB-100B-PFF-T at 25°C? The sensitivity at 25°C is 20 mV/A.
- How does the integrated shield technology benefit the ACS758LCB-100B-PFF-T? The integrated shield technology reduces capacitive coupling and prevents offset drift in high-side, high-voltage applications.
- What is the package type of the ACS758LCB-100B-PFF-T? The device is packaged in a 5-pin CB package.
- Is the ACS758LCB-100B-PFF-T lead-free? Yes, the ACS758LCB-100B-PFF-T is lead-free, with all leads plated with 100% matte tin and no Pb inside the package.
