Texas Instruments DRV5021/DRV5021-Q1 Unipolar Switches
Texas Instruments DRV5021/DRV5021-Q1 2.5V to 5.5V Hall Effect Unipolar Switches operate from a 2.5V to 5.5V power supply and are ideal for high-speed applications. The DRV5021/DRV5021-Q1 senses magnetic flux density and gives a digital output based on predefined magnetic thresholds. The DRV5021/DRV5021-Q1 senses magnetic fields perpendicular to the face of the package.
The open-drain output of the device drives a low voltage when the applied magnetic flux density exceeds the magnetic operating point (BOP) threshold. The output goes to high impedance when the flux density decreases to less than the magnetic release point (BRP) threshold. The separation of BOP and BRP due to hysteresis helps prevent output errors caused by input noise.
System designs are more robust against noise interference using this configuration. The device operates continually across a wide ambient temperature range of –40°C to +125°C. The Texas Instruments DRV5021-Q1 devices are AEC-Q100 qualified for automotive applications.
Features
- Digital unipolar-switch hall sensor
- 2.5V to 5.5V operating VCC range
- Magnetic sensitivity options (BOP, BRP)
- DRV5021A1: 2.9mT, 1.8mT
- DRV5021A2: 9.2mT, 7.0mT
- DRV5021A3: 17.9mT, 14.1mT
- Fast 30kHz sensing bandwidth
- Open-drain output capable of 20mA
- Optimized low-voltage architecture
- Integrated hysteresis to enhance noise immunity
- –40°C to +125°C operating temperature range
- Surface-mount SOT-23 standard industry package
Applications
- Home appliances
- Industrial valves, solenoids
- Limit switches
- General proximity sensing
- Brushed DC motor feedback
- Docking detection
- Door open and close detection
- Pulse counting
Datasheets
Block Diagram
Magnetic Response
Additional Resources
Inilathala: 2019-02-01
| Na-update: 2023-10-30