Description
The AH2984 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. It is optimized for low start-up voltage.
To help protect the motor coils, the AH2984 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.
The AH2984 is available in SIP4 and SOT89-5L packages.

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
• Packages: SIP-4L and SOT89-5L
• “Green” Molding Compound

APPLICATIONs
• Two-coil BLDC Cooling Fans
• Low Voltage/ Low Power BLDC Motors