This is a single-phase full-wave fan motor driver
The BD6971FS is a single‑phase full‑wave motor driver designed for fan motors. It features speed control via DC/PWM input, a current‑limit circuit, and PWM soft‑switching drive.
The document lists absolute maximum ratings, operating conditions, electrical characteristics, package dimensions, pin assignments, and cautions for safe use, including protection against reverse polarity and thermal overload.
| Supply voltage (absolute max) | 20 V |
|---|---|
| Operating supply voltage range | 3.5 to 17.0 V |
| Power dissipation (max) | 812.5 mW |
| Operating temperature range | -40 to +100 °C |
| Maximum output current | 1.0 A |
| Reference current ability | 5 mA |
The absolute maximum supply voltage is 20 V.
The device can operate from –40 °C to +100 °C.
The driver can source up to 1.0 A of output current.
Avoid reverse polarity; use a protection diode if needed.