The UC3842N is a high performance current mode PWM controller for offline and DC-DC converters made by Texas Instruments. It is designed for off-line and DC to DC fixed frequency current mode control with a minimal external parts count. It provides exceptional line and load regulation, low EMI acoustic noise, and low cost implementation. The UC3842N includes features such as Input Under Voltage Lockout (UVLO), Soft Start and Output Over Voltage Protection. Additionally, its integrated 0.68ohm totem-pole MOSFET driver features a reduced dead time up to 90% and low shoot-through current.