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SMPS

UC3844 Current-Mode PWM Controller
UC3844 Current-Mode PWM Controller

UC3844 Current-Mode PWM Controller

The UC3844 is a fixed frequency current-mode PWM controller. This IC is specially designed for Off-Line and DC to DC converter applications with minimum external components.  
VIPER22A SMPS Controller IC
VIPER22A SMPS Controller IC

VIPER22A SMPS Controller IC

The VIPER22A is a Popular SMPS controller IC form STMicroelectronics that has been extensively used in AC to DC Converters in offline power circuit designs.
VIPER12A SMPS Buck Regulator IC
VIPER12A SMPS Buck Regulator IC

VIPER12A SMPS Buck Regulator

The VIPER12A is a SMPS controller IC that consists of a PWM controller with a power MOSFET. It can take in AC voltage from 85V to 265V and convert to low level voltage like 5V with output current from 10mA to 200mA.