NCP1000: Integrated Off-Line Switching Regulator

Datasheet: Integrated Off-Line Switching Regulator Rev. 10 (208.0kB)

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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 start-up 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.

特性
Highly Integrated Solution
Operates Over Universal Input Voltage Range (85 Vac to 265 Vac)
On-board 700 Volt Power Switch Circuit
Minimal External Parts Required
Input Undervoltage Lockout with Hysteresis
Very Low Standby Current
No Minimum Load Requirement
Opto Fail-safe Shutdown Circuit
Pb-Free Packages are Available

应用
Cell Phone Chargers Wall Adapters On-board AC-DC Converters

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