[POWER-RAIL]

General Description
PWM controller of high-performance current mode is specially designed for AC/DC transformer with high performance and price ratio, which supplies continuous output power of 12W within the range of wide-voltage between 85V and 265V, the output power of peak value can be up to 18W. The combination of optimized reasonable circuit design and bipolar facture technology with high performance and price ratio economizes the whole cost ultimately. The power controller can be applied to the typical flyback circuit topology so as to form a simple AC/DC transformer.

FEATUREs
● Set-in high-voltage power switch transistor of 700V
   and few peripheral components
● With the modulation of lock pulse width, the testing is
   according to the pulse limit current.
● With the function of output frequency reduction, the non-output
   power consumption can be less than 0.3W.
● Inner-built ramp and anti-feedback compensation function
● The independent upper-limit current testing controller deals with
   over-current and over-load of the controller real-timely.
●  The period emission pole is turned off and it outputs
   by deflected voltage, and the pressure resistance
   of the power transistor is improved.
● Set-in current limit resistance with temperature compensation,
   which makes the current limit precise
● Set-in heat protection circuit
● Startup is accomplished with the magnification
   function of the switch power transistor, and the power
   consumption of startup resistance is reduced more than10 times.
● Few peripheral components
● Low startup and operating current
● VCC over-voltage automatic limit
● Continuous Wide-voltage output power up to 5W,
   and the narrow-voltage output power up to 8W.
● Pb-Free DIP-8L Package