NCP1028P100 p1028p100 DIP 7

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 voltage switch circuit and startup circuit can
function in continuous operation over a wide range of inputs, from
85 Vac to 265 Vac, and thus can be used in any existing power system in
the world. Though inexpensive, these devices include a number of
features such as undervoltage lockout, over−temperature protection,
bandgap reference and leading edge blanking that make them an
excellent value.