RT8725

® RT8725 Single-Phase BLDC Fan Driver IC General Description The RT8725 is a single-phase driver IC for fan motors. Rotation speed is controlled by PWM input signal. The RT8725 provides several protection features including standby mode, thermal shutdown, lock protection, overcurrent protection and under-voltage protection. The Builtin smart force start-up function overcomes and avoids wrong status when electrical noise occurs during startup. In the standby and thermal shutdown mode, the supply current is less than 100μA. The rotation frequency is generated by FG output. Ordering Information RT8725 Package Type QU : UDFN-8L 2x3 (U-Type) Note : Lead Plating System G : Green (Halogen Free and Pb Free) Richtek products are : ` RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. ` Suitable for use in SnPb or Pb-free soldering processes. Features z Low Supply Current z Smart Force Start-up Function z PWM Supply Voltage Control Fan Speed z Built-in Motor Lock Protection and Automatic Restart z Built-in Thermal Shutdown z Built-in Over-Current Protection z Built-in Frequency Generator with FG Output Signal z RoHS Compliant and Halogen Free Applications z Single Phase Fan Motor for Notebook or PC Pin Configurations (TOP VIEW) OUT2 VCC H+ H- 1 2 3 4 GND 8 GND 7 OUT1 6 PWM 9 5 FG UDFN-8L 2x3 Marking Information 0A : Product Code 0AW W : Date Code Simplified Application Circuit Optional Supply D1 Voltage D2 Hall RT8725 VCC OU...