UC3843BNG | onsemi

High Performance Current Mode Controller, UC3843BNG, ON Semiconductor

The UC3842B, UC3843B series are high performance fixed frequency current mode controllers. They are specifically designed for Off−Line and DC−DC converter applications offering the designer a cost−effective solution with minimal external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, 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.

FEATURES

• Trimmed Oscillator for Precise Frequency Control
• Oscillator Frequency Guaranteed at 250 kHz
• Current Mode Operation to 500 kHz
• Automatic Feed Forward Compensation

Technical Data

• Temperature: 0°C to 70°C
• Output current: 1 A
• Output voltage range: 4.9-5.1 VDC