Allegro MicroSystems, a world-renowned semiconductor manufacturer, focuses on the R&D of chips in Hall-effect sensing, motor driving, power management and other fields. Its products are widely used in industrial control, automotive electronics, smart home, 3D printing, power management, new energy equipment and many other scenarios, thanks to their advantages of high precision, high reliability and strong electrical isolation. This article details the core parameters and application values of a range of hot-selling Allegro chips by category, to help engineers make accurate component selections.
Based on the Hall-effect principle, this series of chips realizes bidirectional AC and DC current detection with built-in electrical isolation, eliminating the need for external sampling resistors. They are suitable for current monitoring, overcurrent protection and energy consumption monitoring in different current ranges, covering requirements from low current to 100-ampere high current applications.
ACS712ELCTR-05B-T: A classic entry-level current sensor with a measuring range of ±5A and sensitivity of 185mV/A, operating at 5V with 2.1kV RMS electrical isolation. It features a compact size and cost-effective performance, ideal for low-voltage low-current monitoring, small household appliances, simple power supply protection, and is a common choice for makers and entry-level industrial projects.
ACS712ELCTR-20A-T: Upgraded measuring range to ±20A with sensitivity of 100mV/A, retaining the same package and isolation characteristics. It is suitable for current sampling in small and medium-sized power supplies, motor control and battery management systems, striking a perfect balance between cost and performance with strong universality.
ACS712ELCTR-30A-T: Measuring range of ±30A and sensitivity of 66mV/A, designed for medium-current scenarios such as small industrial equipment, charging pile modules and inverter current monitoring. It boasts fast response speed, low temperature drift and outstanding long-term operational stability.
ACS711KEXLT-31AB-T: Measuring range of ±31A with integrated overcurrent fault protection, low-noise analog signal output and a compact 3x3mm QFN package. It is perfect for high-precision detection in space-constrained applications, including communication equipment, portable new energy devices and precision power supplies.
ACS711KEXLT-15AB-T: Measuring range of ±15A with higher sensitivity and optimized temperature drift compensation, suitable for accurate current sampling in low-voltage systems within 100V. It replaces traditional sampling resistors to reduce power consumption and wiring complexity.
ACS724LLCTR-20AB-T: Automotive-certified with a measuring range of ±20A, equipped with common-mode magnetic field suppression technology for strong anti-interference capability. It adapts to current detection in automotive on-board equipment and industrial frequency conversion devices, with a wide operating temperature range to withstand harsh working conditions.
ACS724LLCTR-30AB-T: Measuring range upgraded to ±30A with synchronized performance improvements, ideal for medium-current monitoring in automotive electronic control and industrial servo systems, meeting automotive-grade standards for isolation performance and reliability.
ACS725LLCTR-20AB-T: Optimized response speed and precision based on the ACS724, suitable for high-frequency current detection scenarios such as switching power supplies and real-time current monitoring of motor variable frequency drives.
ACS758LCB-050B-PFF-T: Measuring range of ±50A with high precision and low noise, built-in low-resistance conductor for extremely low power consumption. It is applied to high-current detection in industrial high-power power supplies and new energy equipment, with excellent electrical isolation to ensure the safety of high-voltage systems.
ACS758LCB-100B-PFF-T: Measuring range of ±100A, the top choice for 100-ampere high-current detection, with a measurement error of less than 1%. It is suitable for industrial frequency converters, electric vehicle charging equipment and large inverter scenarios.
ACS758LCB-050U-PFF-T: Unidirectional measuring version with ±50A unidirectional current detection, more cost-effective for unidirectional high-power current monitoring scenarios.
ACS770LCB-100B-PFF-T: ±100A bidirectional detection with optimized heat dissipation design, delivering stronger stability for long-term high-current operation, suitable for heavy industrial equipment and new energy energy storage systems.
ACS770LCB-100U-PFF-T: ±100A unidirectional detection with a simplified structure and high cost performance, ideal for unidirectional high-current monitoring in industrial and new energy projects.
ACS733KLATR-40AB-T: High-bandwidth Hall sensor with a bandwidth of up to 1MHz and ultra-fast response speed, specially designed for high-frequency switching circuits, automotive OBC (On-Board Chargers) and communication power supplies, and can replace high-frequency current transformers.
ACS713ELCTR-20A-T: Upgraded version of ACS712 with ±20A measuring range, improved precision and anti-interference capability, suitable for industrial control scenarios with higher stability requirements.
ACS780LLRTR-050B-T: Coreless design with ±50A measuring range, built-in common-mode magnetic field interference protection, and low-resistance conductor to reduce power loss, suitable for high-precision current detection in automotive electronics and industrial automation.
Allegro motor driver chips feature high integration, built-in overcurrent, overheating and undervoltage protection, and support multiple driving modes. They are compatible with stepper motors, brushed DC motors and brushless motor control, widely used in 3D printing, robotics, smart home, automotive electronic control and other scenarios.
A4988SETTR-T: A best-selling stepper motor driver supporting full-step, half-step, 1/4, 1/8 and 1/16 microstepping, operating voltage of 8-35V, peak output current of 2A. With built-in converter and overcurrent protection, it requires no complex programming and is easy to debug, making it a standard driver chip for 3D printers, small robots and CNC equipment.
A4950ELJTR-T: Full-bridge DMOS PWM brushed DC motor driver with operating voltage of 8-40V, continuous output current of 2A and peak current of 3.5A. Low on-resistance reduces power consumption, suitable for brushed motor control in household appliance motors, water pumps, fans and small electric tools.
A4931METTR-T: Three-phase brushless DC motor pre-driver supporting N-channel MOSFET driving, with built-in Hall commutation, current control and stall protection. It is suitable for automotive fans, water pumps and industrial brushless motor control, with high integration to simplify peripheral circuits.
A6211GLJTR-T: Dual-channel H-bridge motor driver capable of independently controlling two DC motors or one stepper motor, compact in size and suitable for motor driving in smart home, small toys and portable equipment.
A3979SLPTR-T & A5979GLPTR-T: High-performance stepper motor driver chips supporting high-microstepping driving with stronger output current, suitable for industrial CNC equipment and high-precision servo systems, with better stability and anti-interference than general-purpose drivers.
A8498SLJTR-T: Optimized version of the A4988 stepper motor driver with upgraded heat dissipation and driving performance, suitable for 3D printing and CNC equipment running continuously for a long time, with a lower failure rate.
A1324LLHLX-T & A1324LUA-T: Low-noise linear Hall sensors with output voltage proportional to magnetic field strength, excellent temperature stability, and operating temperature range of -40℃ to 150℃. Suitable for position detection, angle measurement and magnetic field induction scenarios, with compact packages ideal for space-constrained industrial and automotive electronics projects.
A1304ELHLX-T: High-precision linear Hall sensor with optimized sensitivity, suitable for precision position detection, liquid level monitoring and displacement measurement scenarios, featuring high reliability and adaptability to harsh industrial environments.
All the above Allegro MicroSystems chips are high-frequency selections for industrial and electronic projects. Whether for small-batch prototype debugging or large-scale mass production stocking, a stable, genuine and on-time delivery sourcing channel is essential. ICGOODFIND, a professional electronic components procurement platform, specializes in the supply of full-category Allegro chips with formal sources and complete models. It can accurately match every component listed above, and provides complete datasheets and technical selection references to help engineers efficiently complete component procurement, avoid counterfeit products and stock shortages, and safeguard project R&D and mass production.
Overall, Allegro chips cover full-scenario demands from micro-current detection to high-current monitoring, and from small motor driving to industrial-grade motor control. Their performance and reliability have been long-term verified by the market. Coupled with the stable supply capacity of ICGOODFIND, they can perfectly meet the chip selection and procurement needs of various electronic projects.
