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DRV5015A3QDBZR

Automotive latch Hall sensor, 3.5mT BOP, push-pull, SOT-23-3, AEC-Q100

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Pieza del fabricante：

DRV5015A3QDBZR

Paquete：

SOT-23-3 (2.90 x 1.30 x 1.00 mm)

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Descripción

Productos

The DRV5015A3QDBZR from Texas Instruments is an automotive-qualified digital-latch Hall effect sensor in a SOT-23-3 package. With a 3.5 mT operate point and 2.5 mT release point (AD version), it provides a latching output for rotary encoding and brushless DC motor commutation applications.

Especificaciones

Magnetic Response Latching (bipolar switch)
Operate Point (BOP) 3.5 mT (typ)
Release Point (BRP) -2.5 mT (typ)
Output Type Push-pull (CMOS)
Tensión de alimentación 2.7 V to 5.5 V
Supply Current 3.5 mA (typ)
Bandwidth 30 kHz
Temperatura de funcionamiento -40°C to +125°C
Paquete SOT-23-3

Características

  • Automotive AEC-Q100 qualified
  • Latching output requires alternating N/S poles to toggle
  • High-sensitivity 3.5 mT operate point
  • Push-pull CMOS output for direct MCU interface
  • Wide 2.7 V to 5.5 V supply range
  • 30 kHz bandwidth for high-speed rotary encoding

Aplicaciones

  • BLDC motor commutation
  • Rotary encoder position sensing
  • Speed and position measurement
  • Automotive seat position detection
  • Industrial proximity sensing

The DRV5015A3QDBZR from Texas Instruments is an automotive-qualified latching Hall effect sensor in a compact SOT-23-3 surface-mount package. The AD version features a 3.5 mT typical operate point (BOP) with a -2.5 mT typical release point (BRP), requiring alternating north and south magnetic poles to toggle the output. This latching behavior is essential for rotary encoding and BLDC motor commutation where the sensor must maintain its output state until the opposite polarity field is detected. The push-pull CMOS output directly interfaces with microcontroller GPIO pins without external pull-up resistors. The device is AEC-Q100 Grade 0 qualified for automotive applications, operating from -40°C to +125°C. The 30 kHz bandwidth supports high-speed motor commutation at up to several thousand RPM. The wide 2.7 V to 5.5 V supply range enables direct connection to 3.3 V or 5 V automotive logic rails.

The DRV5015A3QDBZR uses a planar Hall effect element that generates a voltage proportional to the perpendicular component of the magnetic field. The Hall voltage is amplified and compared against two threshold levels: a positive threshold (BOP = 3.5 mT) and a negative threshold (BRP = -2.5 mT). When the south pole of a magnet approaches and the field exceeds BOP, the output switches high. The output remains high even when the field drops below BOP, due to the latching (bistable) architecture. The output only switches low when the north pole approaches and the field exceeds BRP in the negative direction. This alternating BOP/BRP switching creates the latching behavior essential for detecting multi-pole ring magnets in rotary encoders. The internal band-gap reference provides stable thresholds over temperature, and the chopper-stabilized amplifier minimizes offset drift.

Pin Nombre Función
1 VCC Supply voltage input (2.7 V to 5.5 V)
2 GND Ground connection
3 OUT Push-pull CMOS output; high when B > BOP, low when B < BRP
  • BLDC Motor Commutation: Detecting rotor magnet pole positions for electronic commutation in brushless DC motor drives
  • Rotary Encoder: Multi-pole ring magnet detection for incremental position encoding in automotive and industrial applications
  • Speed Measurement: Rotational speed sensing using multi-pole magnets in transmission and wheel speed sensors
  • Seat Position Detection: Automotive seat track position sensing using magnet strip with alternating poles
  • Flow Meter: Impeller rotation detection in fluid flow meters with embedded magnets
Modelo Fabricante BOP/BRP Salida Auto Paquete Notas
DRV5015A1QDBZR TI 8.5/-5.5 mT Push-pull Yes SOT-23-3 Higher threshold
DRV5015A2QDBZR TI 5.5/-3.5 mT Push-pull Yes SOT-23-3 Medium threshold
AH1806-WG-7 Diodos Inc 3.5/-3.5 mT Push-pull No SOT-23-3 Similar, non-auto
HAL559LK-E8861 Infineon 5/-5 mT Open-drain Yes TSSOP-8 Auto, more features
US1881KUA-AAA-000-BU Melexis 5/-5 mT Open-drain No SOT-23-3 Popular latch alternative
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