company blog about Original Chip Allegro ACS780LLRTR-100B-T Hall-Effect Current Sensor IC

Original Chip Allegro ACS780LLRTR-100B-T Hall-Effect Current Sensor IC

Shenzhen Mingjiada Electronics Co., Ltd. – as a professional supplier of electronic components, has long been dedicated to providing customers with high-quality Allegro brand current sensors. We currently prioritise the supply of the ACS780LLRTR-100B-T Hall-effect current sensor. Employing advanced Hall-effect technology, the ACS780LLRTR-100B-T integrates a 200μΩ current conductor, offering high precision, low power consumption, and exceptional reliability. It is ideally suited for current detection applications in industrial and automotive sectors.

01 Product Overview
The ACS780LLRTR-100B-T is a high-precision linear Hall-effect current sensor IC introduced by Allegro. It integrates a 200μΩ current conductor within a compact 7-pin PowerSMD module package.
The ACS780LLRTR-100B-T current sensor detects AC or DC currents up to 100A, employing Hall-effect technology for non-contact current measurement. This effectively eliminates power dissipation and isolation issues inherent in traditional resistive sampling methods.

02 Core Product Features
Ultra-Low Power Consumption and High Reliability
The ACS780LLRTR-100B-T's ultra-low 200μΩ internal conduction resistance significantly reduces power dissipation, enhancing overall system efficiency.
Employing a highly reliable monolithic Hall IC design, the ACS780LLRTR-100B-T enables current detection without external sensing resistors, simplifying system design and improving reliability.
Exceptional Electrical Performance
The ACS780LLRTR-100B-T sensor delivers a typical bandwidth of 120kHz and a fast response time of 3.6μs, enabling precise tracking of rapid current changes. This makes it ideal for applications requiring real-time monitoring.
Its ratio-meter voltage output characteristic ensures the output signal is proportional to the supply voltage, minimising the impact of power supply variations on measurement accuracy.
The ACS780LLRTR-100B-T delivers an exceptionally stable static output voltage, effectively minimising accuracy variations caused by temperature drift and long-term usage.
Superior Immunity to Interference
Designed to be immune to common-mode field interference, the ACS780LLRTR-100B-T suppresses external magnetic field disturbances, ensuring measurement accuracy in complex electromagnetic environments.

03 Detailed Specifications
The detailed technical specifications for the ACS780LLRTR-100B-T are as follows:
Electrical Characteristics
Current detection range: ±100A (bidirectional)
Operating voltage: 4.5V to 5.5V single-supply operation
Sensitivity: 20mV/A
Accuracy: ±1.5%
Linearity: ±1%
Bandwidth: DC to 120kHz
Response Time: 3.6μs
General Parameters for ACS780LLRTR-100B-T:
Operating Temperature Range: -40°C to +150°C
Supply Current: Maximum 15mA
Polarity: Bidirectional current sensing
Number of Channels: 1 channel
Physical Characteristics
Package Type: 7-PowerSMD module
Mounting Method: Surface mount
Supplier Device Package: 7-PSOF

04 Application Areas
The ACS780LLRTR-100B-T finds extensive application across multiple sectors due to its exceptional performance:
Automotive Electronics Systems
The ACS780LLRTR-100B-T is suitable for automotive electronic applications including electric vehicle motor control, battery management systems, charging systems, and electric power steering systems.
Its wide operating temperature range of -40°C to 150°C enables adaptation to extreme thermal conditions within automotive environments.
Industrial Control and Power Management
Within industrial applications, the ACS780LLRTR-100B-T serves motor drives, overcurrent protection, load detection systems, and power supply monitoring.
Its 120kHz bandwidth and 3.6μs fast response time enable timely detection of fault currents, protecting power devices from damage.
Energy Management Systems
The ACS780LLRTR-100B-T is ideally suited for current monitoring requirements in solar inverters, uninterruptible power supplies (UPS), and industrial variable frequency drives. Its high precision and low power consumption characteristics contribute to enhanced energy conversion efficiency.

【Mingjiada Electronics】Long-term supply of Allegro (ACS780LLRTR-100B-T) high-precision, linear, Hall-effect-based current sensor ICs featuring 200 μΩ current conductors. For further product information or pricing enquiries regarding the ACS780LLRTR-100B-T, please visit the Mingjiada Electronics official website (https://www.integrated-ic.com/) to explore further supply details.