44608P75

MC44608 Few External Components Reliable and Flexible SMPS Controller The MC44608 is a high performance voltage mode controller designed for off--line converters. This high voltage circuit that integrates the startup current source and the oscillator capacitor, requires few external components while offering a high flexibility and reliability. The device also features a very high efficiency standby management consisting of an effective Pulsed Mode operation. This technique enables the reduction of the standby power consumption to approximately 1.0 W while delivering 300 mW in a 150 W SMPS. General Features  Integrated Startup Current Source  Lossless Off--Line Startup  Direct Off--Line Operation  Fast Startup  Flexibility  Duty Cycle Control  Undervoltage Lockout with Hysteresis  On Chip Oscillator Switching Frequency 40 or 75  Secondary Control with Few External Components  These are Pb--Free Devices* Protections  Maximum Duty Cycle Limitation  Cycle by Cycle Current Limitation  Demagnetization (Zero Current Detection) Protection  “Over VCC Protection” Against Open Loop  Programmable Low Inertia Over Voltage Protection Against Open Loop  Internal Thermal Protection SMPS Controller  Pulsed Mode Techniques for a Very High Efficiency Low Power Mode  Lossless Startup  Low dV/dT for Low EMI Radiations *For additional information on our Pb--Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manua...