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RT8720A Datasheet

Part Number RT8720A
Manufacturers Richtek
Logo Richtek
Description Single-Phase Full-Wave Fan Motor Driver
Datasheet RT8720A DatasheetRT8720A Datasheet (PDF)

® RT8720A Single-Phase Full-Wave Fan Motor Driver General Description The RT8720A is a single-phase driver IC for fan motors. Rotation speed is controlled by supply voltage modulation and PWM input signal. The RT8720A provides several protection features including lock protection, thermal shutdown, over-current protection and under-voltage protection. In thermal shutdown mode, the supply current is less than 100μA. The rotation frequency is generated by FG output. Ordering Information RT8720.

  RT8720A   RT8720A






Part Number RT8720B
Manufacturers Richtek
Logo Richtek
Description Single-Phase Full-Wave Fan Motor Driver
Datasheet RT8720A DatasheetRT8720B Datasheet (PDF)

® RT8720B Single-Phase Full-Wave Fan Motor Driver General Description The RT8720B is a single-phase driver IC for fan motors. Rotation speed is controlled by supply voltage modulation. In the supply voltage control application, the fan speed slope is adjustable by the external voltage input. The RT8720B provides several protection features including lock protection, thermal shutdown, over-current protection and under-voltage protection. In thermal shutdown mode, the supply current is less than.

  RT8720A   RT8720A







Single-Phase Full-Wave Fan Motor Driver

® RT8720A Single-Phase Full-Wave Fan Motor Driver General Description The RT8720A is a single-phase driver IC for fan motors. Rotation speed is controlled by supply voltage modulation and PWM input signal. The RT8720A provides several protection features including lock protection, thermal shutdown, over-current protection and under-voltage protection. In thermal shutdown mode, the supply current is less than 100μA. The rotation frequency is generated by FG output. Ordering Information RT8720A Package Type QU : UDFN-8SL 2x2 (U-Type) Lead Plating System G : Green (Halogen Free and Pb Free) Note : 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. Marking Information 1U : Product Code 1UW W : Date Code Features  Low Supply Current  PWM Supply Voltage Control Fan Speed  Supply Voltage Speed Control  Smart Force Start-up Function  Built-in Lock Protection  Built-in Thermal Shutdown  Built-in Over-Current Protection  Built-in Frequency Generator with FG Output Signal  Include Hall Bias Circuit  RoHS Compliant and Halogen Free Applications  Single-Phase Fan Motor for Notebook or PC Pin Configurations (TOP VIEW) OUT2 H+ HB H- 1 2 3 4 GND 8 OUT1 7 VCC 6 PWM 9 5 FG UDFN-8SL 2x2 Simplified Application Circuit Supply Voltage Optional D1 D2 RT8720A VCC OUT2 C1 Pull-High Voltage PWM Control Signal RFG OUT1 FG H+ HB PWM HGND Singl.


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