The FAN7602C is a green current-mode PWM controller manufactured by Fairchild Semiconductor Corporation. It is specially designed for offline adapter applications, DVDP, VCR, LCD monitor applications and auxiliary power supplies. The device has an internal high-voltage startup switch and burst mode operation, which can reduce the power loss in standby mode. Therefore, when the input line voltage is 265VAC and the load is 0.5W, the input power is less than 1W. Under no-load condition, the input power is under 0.15W. Using the power limit function, the maximum power can be limited constantly, regardless of the line voltage change. The switching frequency is not fixed and it has random frequency fluctuation. The FAN7602C includes various system-related protections, including undervoltage protection, overload protection, overvoltage protection and overtemperature protection.
The FAN7602C is a green current-mode PWM controller designed specifically for off-line adapter applications, such as DVD players, VCRs, LCD monitors, and auxiliary power supplies. Key features include random frequency fluctuation for low EMI, an internal high-voltage startup switch, and burst mode operation to reduce power loss in standby mode. The device also incorporates line voltage feedforward to limit maximum power and includes various protection mechanisms for system reliability.
| Operating Supply Current | 1.0 mA Typical |
|---|---|
| Operating Frequency | 73 kHz Max |
| Maximum Duty Cycle | 80 % |
| Power Dissipation | 1.2 W |
| Output Sinking Current | 600 mA |
The device is designed for off-line adapter applications including DVD players, VCRs, LCD monitors, and auxiliary power supplies.
It uses an internal high-voltage startup switch and burst mode operation to reduce power loss.