The FAN6749 is a highly integrated ultra green-mode PWM controller. It features high voltage startup, low operating current, linearly reducing PWM frequency to 24kHz, proprietary frequency hopping to reduce EMI, two-level over-current protection (OCP), 1400ms delay for normal peak load, two-level OCP, 56ms delay for super peak load, output short-circuit protection (SCP), peak-current mode operation with cycle-by-cycle current limiting, HV pin brown-in/out protection with hysteresis, constant power limit by HV sampling, internal FB open-loop protection (OLP), GATE output maximum voltage clamp: 14.5V, VDD over-voltage protection (OVP), programmable over-temperature protection (OTP), integrated 6ms soft-start function, internal latch circuit (OVP, OTP, OCP, OLP, SCP), internal OTP sensor with hysteresis. It is suitable for general-purpose switched-mode power supplies and flyback power converters, including: power adapters, open-frame SMPS; specifically for SMPS with surge-current output, such as for printer, scanner, motor drivers.