The UC3844A series of high performance fixed frequency current mode controllers are specifically designed for off–line and dc–to–dc converter applications offering the designer a cost effective solution with minimal external components. This integrated circuit features an oscillator, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.

● Output Deadtime Adjustable from 50 to 70

● Current Mode Operation to 500 kHz

● Automatic Feed Forward Compensation

● Latching PWM for Cycle–By–Cycle Current Limiting

● Internally Trimmed Reference with Undervoltage Lockout

● High Current Totem Pole Output

● Undervoltage Lockout with Hysteresis

● Low Startup and Operating Current