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AH2985 - TWO PHASE HALL-EFFECT SMART FAN MOTOR CONTROLLER

General Description

The AH2985 is a single-chip solution for driving two-coil brushless direct current (BLDC) fans and motors.

The device includes a Halleffect sensor, dynamic offset correction and two complementary open-drain output drivers with internal Zener diode protection.

Key Features

  • Single-Chip Solution.
  • Operating Voltage: 2.5V to 15V.
  • Built-in Hall Sensor and Input Amplifier.
  • Rotor Lock Protection (Lock Detection, Output Shutdown and Automatic re-Start).
  • Built-in Reverse Voltage Protection Diode.
  • Built-in Zener Protection for Output Drivers.
  • Average Output Current up to 500mA.
  • Package: TO94.
  • “Green” Molding Compound.
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2).
  • Halogen and Antimony Free. “Green” Device (Not.

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📁 Similar Datasheet

Part Number Description Manufacturer
AH2984 TWO PHASE HALL-EFFECT SMART FAN MOTOR CONTROLLER Diodes Incorporated
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AH291 Low Voltage Hall-Effect Smart Fan Motor Controller ETC
AH291 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Diodes Incorporated
AH292 Low Voltage Hall-Effect Smart Fan Motor Controller ETC

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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NEW PRODUCT AH2985 TWO PHASE HALL-EFFECT SMART FAN MOTOR CONTROLLER Description The AH2985 is a single-chip solution for driving two-coil brushless direct current (BLDC) fans and motors. The device includes a Halleffect sensor, dynamic offset correction and two complementary open-drain output drivers with internal Zener diode protection. It is optimized for low start-up voltage. To help protect the motor coils, the AH2985 provides Rotor Lock Protection which shuts down output drives if rotor lock is detected. The device automatically re-starts when the rotor lock is removed. Over temperature shutdown provides thermal protection for the device. Pin Assignments (Top View) AH2985 The AH2985 is available in TO94 package.