三相無傳感器正弦波180度 風扇驅(qū)動器 芯麥GC5845替代Allegro A4945 瑞盟MS39545
- 品牌：???芯麥
- 型號：???GC5845 A4945 MS39545
Chip description：
The GC5845 and GC5849 is a three phase motor driver incorporate sinusoidal drive to minimize audible noise and vibration for medium power fans. A speed input is provided to control motor speed. This allows system cost savings by eliminating an external variable power supply.
Alternatively, power supply modulation down to 4 V can be used to adjust motor speed。
Chip features：
? 180° sinusoidal drive for low audible noise
? High efficiency control algorithm Support
? Sensorless operation
? Analog speed input (GC5845)
? PWM speed input (GC5849)
? Wide supply voltage range: 4~20V
? FG speed output
? Lock detection
? Thermal breakdown protection,
Over current protection，
Short circuit protection
? Soft start
? eSOP8 Package
Chip application：
? CPU cooling Fans
? VGA cooling Fans
? Water Pump Motor
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