NTE1672

NTE1672 Integrated Circuit Power Supply Control Circuit Description: The NTE1672 is a control circuit in a 16–Lead DIP type package designed for use in switched mode power supplies. This single monolithic chip incorporates all the control and housekeeping (protection) functions required in switched mode power supplies, including an internal temperature compensated reference source, internal Zener references, sawtooth generator, pulse width modulator, output stage, and various protection circuits. Features: D Stabilized Power Supply D Temperature Compensated Reference Source D Sawtooth Generator D Pulse Width Modulator D Remote ON/OFF Switching D Current Limiting D D D D D D Low Supply Voltage Protection Loop Fault Protection Demagnetization/Overvoltage Protection Maximum Duty Cycle Clamp Feed Forward Control External Synchronization Absolute Maximum Ratings: Supply Voltage Forced Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +18V Current Fed Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA Output Transistor (at 20 – 30V Max) Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40mA Collector Voltage (Pin15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VCC +1.4V Maximum Em...