NCP1000 Datasheet - ON Semiconductor

NCP1000 Integrated Off-Line Switching Regulator

Pin Function Description 1 VCC Positive input supply voltage. This pin is connected to an external capacitor for energy storage. The startup circuit sources current out of this pin to initially charge the capacitor. When the voltage reaches the upper threshold limit of the undervoltage lockout ci.

NCP1000, NCP1001, NCP1002 Integrated Off- Line Switching Regulator The NCP1000 through NCP1002 series of integrated switching regulators, combine a fixed frequency PWM controller with an integrated high voltage power switch circuit. This chip allows for simple design and minimal parts count for very low cost applications which utilize an ac input. This chip is designed to power a single ended topology, typically a discontinuous mode flyback, with secondary side sensing. The internal high voltag.

NCP1000 Features

* such as undervoltage lockout, over

* temperature protection, bandgap reference and leading edge blanking that make them an excellent value. Features

* Highly Integrated Solution

* Operates Over Universal Input Voltage Range (85 Vac to 265 Vac)

* On

* board 700 V Power Switch

NCP1000_ONSemiconductor.pdf