UC3844 - High Perfomance Current Mode Controllers
Product Code: Components-Mixed-UC3844
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The UC3843 is fixed frequency current-mode PWM controller. They are specially designed for Off-Line ..
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- Current Mode Operation to 500 kHz Output Switching Frequency
- Output Deadtime Adjustable from 50% to 70%
- Automatic Feed Forward Compensation
- Latching PWM for Cycle−By−Cycle Current Limiting
- Internally Trimmed Reference with Undervoltage Lockout
- High Current Totem Pole Output
- Input Undervoltage Lockout with Hysteresis
The UC3844, UC3845 series are high performance fixed frequency current mode controllers. They are specifically designed for Off−Line and DC−to−DC converter applications offering the designer a cost effective solution with minimal external components. These integrated circuits feature 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.
The UCX844 has UVLO thresholds of 16 V (on) and 10 V (off),ideally suited for off−line converters.
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