Bardeen Micro BDH8181 Hall effect latched sensor featuring internal bandgap regulator for brushless DC motor
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Product Description
Product Overview
The BDH8181 is a high-sensitivity Hall-effect latched sensor designed for electronic commutation in brushless DC motor applications. This integrated device 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, allowing for a wide operating supply range. The output turns ON with a sufficiently strong north magnetic pole and OFF in the absence of a magnetic field. It is available in TO-92S-3 and SOT-23-3 packages.
Product Attributes
- Brand: Shenzhen Bardeen Microelectronics (BDM)
- Model: BDH8181
- Version: V1.1
- Package Types: TO-92S-3, SOT-23-3
Technical Specifications
| Specification | Details |
|---|---|
| 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. |
| Application | Brushless DC Motor |
| Features | On-chip Hall Sensor, Wide Operating Voltage Range, Internal Bandgap Regulator for Temperature Compensation, Maximum Output Sink Current: 25mA, Operating Temperature: -40C to 125C, ESD Rating: 3000V (Human Body Model), 300V (Machine Model) |
| Operating Voltage Range | 3.5V to 24V |
| Maximum Output Sink Current | 25mA |
| Operating Temperature | -40C to 125C |
| ESD Rating (Human Body Model) | 3000V (Note: Document also shows 4000V in Absolute Maximum Ratings) |
| ESD Rating (Machine Model) | 300V (Note: Document also shows 300V in Absolute Maximum Ratings) |
| Supply Current (ICC Awake) | 2.5mA (Type), 5mA (Max) |
| Output Leakage Current (ILEAK) | 10 A (Max) for B |
| Output Saturation Voltage (VSAT) | 110mV (Type), 300mV (Max) at IOUT = 1.0mA |
| Rise Time (tr) | 0.2 s (Operating) |
| Fall Time (Tf) | 0.2 s (Operating) |
| Magnetic Characteristics: Operating Point (BOP) | -20 Gauss (Type), 50 Gauss (Max) |
| Magnetic Characteristics: Releasing Point (BRP) | -50 Gauss (Min), -20 Gauss (Type) |
| Magnetic Characteristics: Hysteresis (BHYS) | 40 Gauss |
| Absolute Maximum Supply Voltage (VCC) | -5V to 30V |
| Absolute Maximum Output Off Voltage (VCE) | 30V |
| Absolute Maximum Power Dissipation (PD) | 400 mW |
| Absolute Maximum Storage Temperature (TS) | -55C to 150C |
| Absolute Maximum Junction Temperature (TJ) | 125C |
| Pin Description (TO-92S / SOT23-3L) | 1: VCC (Supply voltage), 2: OUT (Output) / 3: GND (Ground pin) |
| Pin Description (TO-92S / SOT23-3L) | 3: GND (Ground pin) / 2: OUT (Output) |
| Pin Description (TO-92S / SOT23-3L) | 2: OUT (Output) / 1: VCC (Supply voltage) |
| Package Dimensions (TO-92S) | Refer to Figure 4 in source document. |
| Package Dimensions (SOT-23-3) | Refer to Figure 4 in source document. |
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