PUCC3801 Current-mode PWM controller Rev.
01 — 10 September 2001 Product data 1.
General description The PUCC3801 is a current-mode Pulse Width Modulated (PWM) controller containing all the control and protection functions necessary to implement an off-line, flyback or forward converter with a minimum number of external components.
2.
Features s Very low start-up supply current; 50 µA typical s Low operating supply current; 1.
2 mA typical s Accurate, internally-trimmed, fixed frequency oscillator (100 kHz).
No external timing components needed s Internal slope compensation.
No external ramp components needed s Built-in over-voltage and under-voltage detection s High-speed over-current trip; ...

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