SD6835 DIP8

توضیحات

CURRENT MODE PWM+PFM CONTROLLER WITH BUILT-IN HIGH
VOLTAGE MOSFET

SD6835 is current mode PWM+PFM controller used for SMPS with
built-in high-voltage MOSFET and external sense resistor.
It features low standby power and low start current. In standby
mode, the circuit enters burst mode to reduce the standby power
dissipation.
The switch frequency is 25~67KHz decided by the load with jitter
frequency for low EMI.
Built-in peak current compensation circuit makes the limit peak
current stable even with different input AC voltage. Built-in limit
output power compensation circuit to balance the limit output power
under different AC voltage inputs. Built-in slope compensation
circuit to adapt to more transformer applications. Maximum peak
current compensation during power-on reduces pressure on
transformer to avoid saturation, the peak current compensation will
decrease for balance after power-on. Limit output current can be
adjusted through the resistor connected to CS.
It integrates various protections such as undervoltage lockout,
overvoltage protection, overload protection, leading edge blanking
and thermal shutdown. The circuit will restart until normal if
protection occurs.