Monolithic Power Systems (MPS) MCQ1823 Linear Hall-Effect Current Sensor
Monolithic Power Systems (MPS) MCQ1823 Linear Hall-Effect Current Sensors are automotive-grade hall-effect current sensor ICs for AC or DC sensing. The differential Hall array cancels out homogeneous or gradient stray magnetic fields.
The primary conductor’s low resistance (0.6mΩ) allows large currents to flow close to an integrated circuit that contains high-accuracy Hall sensors. A magnetic field is generated by the current, which is sensed at two different points by the integrated Hall transducers. This magnetic field difference between these two points is then converted into a voltage proportional to the applied current. The device uses a spinning current technique for a low, stable offset.
The MCQ1823 integrates fast over-current detection (OCD), making monitoring system over-current (OC) events simple. Its small footprint reduces board area and makes this device well-suited for space-constrained applications. The Monolithic Power Systems (MPS) MCQ1823 is available in an ultra-small TQFN-12 (3mm x 3mm) package and is AEC-Q100 qualified.
Features
- Available in AEC-Q100 Grade 1
- 3.3V or 5V single supply options
- Immune to all external gradient magnetic fields by differential sensing
- 0.6mΩ internal conductor resistance
- ±2.5% total accuracy
- 5A to 50A bidirectional or unidirectional range
- 120kHz bandwidth
- Custom Over-Current Detection (OCD) from 50% to 240% of IPMAX
- Fast OCD with 1µs response time
- Output Voltage (VOUT) proportional to AC or DC currents
- Ratiometric or absolute VOUT options
- Factory-trimmed for accuracy
- Available in a TQFN-12 (3mm x 3mm) package
Applications
- Motor control
- Audio driver current control
- Automotive systems
- Load detection and management
- Switch-mode power supplies
- Over-current fault protection
Typical Application
