Description

The AH284 is a single-chip solution for driving two-coil brushless direct current (BLDC) fans and motors. The device includes a Hall-effect sensor, dynamic offset correction and two complementary open-drain output drivers with internal Zener diode protection.

Features

• Single-chip Solution

• Operating Voltage: 3.8V to 20V

• Built-in Hall Sensor and Input Amplifier

• Rotor Lock Protection (Lock detection, output shutdown and automatic re-start)

• Built-in Zener Protection for Output Driver

• Average Output Current up to 500mA

• Packages: SIP-4 and SOT89-5

• Green Molding Compound

• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

• Halogen and Antimony Free. “Green” Device (Note 3)

Applications

• Two-coil BLDC Cooling Fans

• Low to Medium Voltage, Low Power BLDC Motors