FAN7602M

绿色电流模式PWM控制器 Green Current Mode PWM Controller

Description

The FAN7602 is a green current mode PWM controller. It is specially designed for off-line adapter application, DVDP, VCR, LCD monitor application, and auxiliary power supplies. The internal high-voltage start-up switch and the burst mode operation reduce the power loss in standby mode.

Because of the internal start-up switch and the burst mode, it is possible to supply 0.5W load, limiting the input power to under 1W when the input line voltage is 265VAC. On no-load condition, the input power is under 0.3W. The maximum power can be limited constantly, regard

less of the line voltage change, using the power limit function. The switching frequency is internally fixed at 65kHz and the frequency modulation technique reduces EMI. The FAN7602 includes various protections for the system reliability and the internalsoft-start prevents the out

put voltage overshoot at start-up.

Features

Green Current Mode PWM Control

Fixed 65kHz Operation with Frequency Modulation

Internal High-Voltage Start-up Switch

Burst Mode Operation

Line Voltage Feed Forward to Limit Maximum Power

Line Under-Voltage Protection

Latch Protection & Internal Soft-Start 10ms Function

Overload Protection

Over-Voltage Protection

Low Operation Current: Typical 1mA

8-pin DIP/SOP