The AH287 is a high voltage Hall-effect smart fan motor controller with features such as on-chip Hall sensor, rotor-locked shutdown, automatic restart, and built-in Zener protection for the output driver.
The Anachip AH287 is a high voltage Hall-effect smart fan motor controller designed for brushless DC fans. It integrates an on-chip Hall sensor with automatic restart functions to handle rotor lockouts, protecting the motor from damage caused by blocked rotors.
The device operates within a supply voltage range of 3.8V to 28V and is available in SIP-4L and SOT89-5L packages. It includes built-in Zener protection for output drivers and features automatic recovery circuits that attempt to restart the motor until the blockage is removed.
| Supply Voltage | 3.8V ~ 28V |
|---|---|
| Output Current (SIP4/SOT89-5) | 400 mA |
| Operating Temperature | -40 ~ 100 °C |
| Storage Temperature | -55 ~ 150 °C |
| Output Zener-breakdown Voltage | 42V to 65V (Max) |
The AH287 is available in SIP-4L and SOT89-5L packages.
The typical operate point (Bop) is 30 Gauss, and the typical release point (Brp) is -30 Gauss.