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F2970 Datasheet

FOR FAN MOTOR SINGLE-PHASE FULL-WAVE DRIVER  
 
 
 
DESCRIPTION
 
The UTC F2970 is a single-phase full-wave bipolar driver
control IC with excellent efficiency for fan motor.
 
FEATURES
 
 
* Single-phase full-wave drive (16V to 1.2A transistors are built in)
* Speed adjustment function by thermistor input and external signal incorporated
Enables silent and low-vibration variable speed control through direct PWM control with separately-excited upper tR
* Kick-back absorption circuit are built in
* Current limiter function (The limiter value determined with Rf, limit at IO=480mA with RL=1Ω connection,)
* Low-consumption, low-loss, and low-noise drive enabled by the soft switching circuit during phase shift    
* HB incorporated  
* Lock protection and automatic reset functions incorporated
* FG (rotation detection) output
* Regeneration Di incorporated with less external parts
* Thermal shutdown circuit incorporated
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