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Bardeen Micro BDH8181 Hall effect latched sensor featuring internal bandgap regulator for brushless DC motor

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Bardeen Micro BDH8181 Hall effect latched sensor featuring internal bandgap regulator for brushless DC motor

Operating Current : 2.5mA

Operation Points : 2mT

Release Points : 2mT

Operating Temperature : -40℃~+125℃

Voltage - Supply : 3.5V~24V

Description : TO-92S Switches (Solid State) RoHS

Mfr. Part # : BDH8181

Model Number : BDH8181

Package : TO-92S

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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 < \|BRP\| < 0.1
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.

2410121517_Bardeen-Micro--BDH8181_C7434463.pdf

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