Brushless DC motor Hall effect sensor Bardeen Micro BDH8181 with internal bandgap voltage regulator
Product Overview
The BDH8181 is a high-sensitivity integrated Hall-effect latched sensor designed for the electronic commutation of brushless DC motor applications. It features an on-chip Hall voltage generator, a comparator for Hall voltage amplification, and a Schmitt trigger for noise rejection and open-collector output. An internal bandgap regulator ensures temperature-compensated supply voltage across a wide operating range. The device activates its output when exposed to a magnetic field of sufficient strength and deactivates it in the absence of a field. Available in TO-92S-3 and SOT-23-3 packages, the BDH8181 is suitable for various brushless DC motor applications.
Product Attributes
- Brand: Shenzhen Bardeen Microelectronics (BDM)
- Model: BDH8181
- Package Types: TO-92S-3, SOT-23-3
- Sensitivity: High
- Switching Type: Latch
Technical Specifications
| Specification | Details | Unit |
|---|---|---|
| Product Description | Integrated Hall-effect latched sensor for electronic commutation of brushless DC motor applications. Includes on-chip Hall voltage generator, comparator, Schmitt trigger, and open-collector output. Internal bandgap regulator for temperature compensation. Output ON with sufficient north pole strength, OFF in absence of magnetic field. | - |
| Model Number | BDH8181 | - |
| Version | V1.1 | - |
| On-chip Hall Sensor | Yes | - |
| Wide Operating Voltage Range | 3.5 to 24 | V |
| Internal Bandgap Regulator | Yes | - |
| Maximum Output Sink Current | 25 | mA |
| Operating Temperature | -40 to 125 | C |
| ESD Rating (Human Body Model) | 3000 (Note: Document also lists 4000V in Absolute Maximum Ratings) | V |
| ESD Rating (Machine Model) | 300 (Note: Document also lists 300V in Absolute Maximum Ratings) | V |
| Application | Brushless DC Motor | - |
| Supply Voltage (Recommended Operating) | 3.5 to 24 | V |
| Operating Temperature (Recommended Operating) | -40 to 125 | C |
| Supply Current (Typical, Awake) | 2.5 | mA |
| Supply Current (Maximum, Awake) | 5 | mA |
| Output Leakage Current (Max) | 10 | A |
| Output Saturation Voltage (Typical, IOUT=1.0mA) | 110 | mV |
| Output Saturation Voltage (Maximum, IOUT=1.0mA) | 300 | mV |
| Rise Time (Operating) | 0.2 | s |
| Fall Time (Operating) | 0.2 | s |
| Operating Point (BOP, Typical) | -20 | Gauss |
| Operating Point (BOP, Maximum) | 50 | Gauss |
| Releasing Point (BRP, Typical) | -50 | Gauss |
| Releasing Point (BRP, Minimum) | -20 | Gauss |
| Hysteresis (BHYS) | 40 | Gauss |
| Supply Voltage (Absolute Maximum) | -5 to 30 | V |
| Output Off Voltage (Absolute Maximum) | 30 | V |
| Output Sink Current (Continuous, Absolute Maximum) | 25 | mA |
| Power Dissipation (Absolute Maximum) | 400 | mW |
| Storage Temperature (Absolute Maximum) | -55 to 150 | C |
| Junction Temperature (Absolute Maximum) | 125 | C |
| ESD (Machine Model, Absolute Maximum) | 300 | V |
| ESD (Human Body Model, Absolute Maximum) | 4000 | V |
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