SKU: SENS-2778
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Allegro MicroSystems ACS758LCB-050B-PFF-T Hall Current Sensor Module - 50A Bidirectional

₹350.00 (Inclusive of all taxes)
Out of Stock

The MCU-758 module integrates the Allegro MicroSystems ACS758LCB-050B Hall-effect linear current sensor IC, providing bidirectional DC current sensing up to ±50A. It operates from a 3V to 5V supply and outputs an analog voltage proportional to the measured current, making it compatible with Arduino, Raspberry Pi, and other 3.3V/5V microcontroller systems.

Features

  • Bidirectional DC current sensing up to ±50 Amperes.
  • Based on the monolithic Allegro MicroSystems ACS758LCB-050B Hall-effect IC for high reliability.
  • Operates from a single 3V to 5V DC supply with low 13.5mA quiescent current.
  • Provides a ratiometric analog voltage output centered at VCC/2 with 40mV/A sensitivity.
  • Compact module form factor (37mm x 18mm) for easy integration into power monitoring systems.

Out of stock

Description

This sensor module utilizes a Hall-effect integrated circuit (IC) to measure current flow through its integrated conductor path. The ACS758 IC provides galvanic isolation between the current path and the sensor electronics, enhancing safety and reducing noise. The output is a linear, analog voltage that is factory-trimmed for accuracy, with a quiescent output of VCC/2 when no current is applied.

The module is designed for robust operation across an industrial temperature range of -40°C to 150°C. Its monolithic construction and optimized internal magnetic circuit result in extremely stable performance with nearly zero magnetic hysteresis, ensuring repeatable measurements in both forward and reverse current directions for applications like battery charge/discharge monitoring and motor control.

Key Features

  • High-reliability, monolithic Hall-effect sensor IC from Allegro MicroSystems MicroSystems.
  • Bidirectional measurement capability (±50A) with linear analog voltage output.
  • Wide operating supply voltage range of 3V to 5V DC for flexible system integration.
  • Factory-trimmed sensitivity and quiescent output voltage for high accuracy.
  • Excellent temperature stability and nearly zero magnetic hysteresis.
  • Compact and durable module design with easy-to-access screw terminals for current connections.
  • Integrated conductor provides low power loss and inherent isolation.
  • Optimized performance-to-cost ratio for power monitoring and control applications.

Applications

  • Battery management systems (BMS) for monitoring charge and discharge currents.
  • Motor drive and control systems for torque and overload protection.
  • Power supply unit (PSU) and inverter output current monitoring.
  • Solar charge controller and renewable energy system analytics.
  • Industrial automation and robotics for actuator power feedback.

Technical Specifications

Manufacturer Part NumberACS758LCB-050B-PFF-T
Sensor TypeHall-Effect Linear Current Sensor
Current Detection Range±50 A (Bidirectional)
Sensitivity (Vsens)40 mV/A
Supply Voltage (VCC)3 V - 5 V DC
Quiescent Output Voltage (VOUT(Q))VCC / 2
Quiescent Current13.5 mA (Typical)
Output Current Capability3 mA
Operating Temperature-40°C to 150°C
Storage Temperature-65°C to 165°C
LinearityExcellent (Inherent to IC)
Module Dimensions37 mm x 18 mm (Approx.)
Module Weight8.8 g

Frequently Asked Questions

What is the output signal of this ACS758 current sensor module?

The module provides a linear analog voltage output. With a 5V supply, the output sits at 2.5V (VCC/2) with zero current. The voltage increases or decreases linearly from this midpoint at a rate of 40mV per Ampere of current flow, allowing measurement of both positive and negative (bidirectional) currents up to ±50A.

How do I connect and power this module with an Arduino?

Connect the module's VCC pin to Arduino's 5V pin and GND to GND. The module's VOUT pin connects to any Arduino analog input pin (e.g., A0). The high-current path (IP+ and IP-) must be connected in series with the load you wish to measure. Ensure your power supply can handle the additional ~13.5mA quiescent current of the sensor.

What is the difference between the 050B and other ACS758 model variants?

The '050B' suffix denotes this specific variant's sensing range of ±50A. Other common variants include '100B' for ±100A and '200B' for ±200A, each with proportionally different sensitivity values (e.g., 20mV/A for 100B). All share the same core architecture, package, and electrical interface, allowing easy scaling of current range within a design.

Can this sensor measure AC current?

The ACS758 IC is fundamentally a DC sensor. However, it can measure low-frequency AC signals if the output is sampled fast enough by your ADC to reconstruct the waveform. For standard 50/60Hz mains AC measurement, it is suitable, but ensure your sampling rate is at least twice the AC frequency (Nyquist rate) and that the current does not exceed the ±50A peak rating.

Package Includes

  • 1 x MCU-758 Hall Current Sensor Module (based on ACS758LCB-050B-PFF-T)

Additional Information

Weight 0.0088 kg
Dimensions 3.7 × 1.8 cm