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The AH9281/82 is a one-chip solution for driving two-coil brushless DC motors and fans. Based on the advanced CDMOS process, the IC contains a Hall-effect sensor, dynamic offset correction and powerful output drivers with 1200mA peak output current capability. Specially designed for driving large fans, the device is optimized for low start-up voltage. Frequency Generator or Rotation Detection is available. The open drain output makes easier the connectivity with any external interface such as hardware monitoring or Super I/O IC.
| Average OutputDrive Current (mA) | 600 |
|---|---|
| Frequency Generator (FG) and Rotation Detect | FG |
| Lock Detect, Shut-Down and Auto Start | Yes |
| Operating Ambient Temperature (°C) | -40 to 15 |
| Operating Point Bop Gauss (Max) | 50 |
| Operating Point Bop Gauss (Min) | - |
| Operating Point Bop Gauss (Typ) | 25 |
| Operating Voltage (V) | 2.5 to 16 |
| Peak Output Current (mA) | 1200 |
| Release Point Brp Gauss (Max) | - |
| Release Point Brp Gauss (Min) | -50 |
| Release Point Brp Gauss (Typ) | -25 |
| SupplyCurrent (mA) | 4 |
| Typical Total RDS(ON)(NMOS and PMOS Combined) | 1.7 @ 12V |
| Typical Zener Breakdown Voltage (V) | 35 |
