NRND = Not Recommended for New Design
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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 |
RD |
Lock Detect, Shut-Down and Auto Start |
Yes |
Operating Ambient Temperature (°C) |
-40 to 125 |
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 |
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A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.
| PCN # | Issue Date | Implementation Date | Subject |
|---|---|---|---|
| PCN-2770 | 2025-10-30 | 2025-10-30 | Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products |
