GENERAL DESCRIPTION

The ML4813 is a PWM controller designed for use in a discontinuous flyback or buck-boost type power factor correction (PFC) system for low power, low cost applications.

FEATURES

■ Precision buffered 5V reference

■ Extra op-amp for output voltage instrumentation amplifier

■ Overcurrent comparator for switch protection

■ Soft start and under-voltage lockout for easy low surge off-line starting

■ 1A peak current Totem-pole output drive

■ Overvoltage comparator eliminates output runaway due to load removal

■ Large oscillator amplitude for better noise immunity