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NCP1001

ON Semiconductor
Part Number NCP1001
Manufacturer ON Semiconductor
Description Integrated Off-Line Switching Regulator
Published Nov 23, 2005
Detailed Description NCP1000, NCP1001, NCP1002 Integrated Off- Line Switching Regulator The NCP1000 through NCP1002 series of integrated swi...
Datasheet PDF File NCP1001 PDF File

NCP1001
NCP1001


Overview
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.
Features  Highly Integrated Solution  Operates Over Universal Input Voltage Range (85 Vac to 265 Vac)  On--board 700 V 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  These are Pb--Free Devices* Typical Applications  Cell Phone Chargers  Wall Adapters  On--board AC--DC Converters VCC STARTUP INTERNAL BIAS UVLO & OPTO FAIL--SAFE STARTUP CIRCUIT FEEDBACK INPUT GND + -- PWM PWM CONTROL & POWER SWITCH CIRCUIT COMPARATOR POWER SWITCH CIRCUIT OSCILLATOR Figure 1.
Simplified Block Diagram *For additional information on our Pb--Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.
 Semiconductor Components Industries, LLC, 2010 December, 2010 -- Rev.
12 1 http://onsemi.
com 8 1 PDIP--8 P SUFFIX CASE 626 Pin: 1.
2.
VCC Feedback Input 3, 6--8 Ground 4.
Startup 5.
Power Switch Circuit MARKING DIAGRAM 8 NCP100xP AWL YYWWG 1 x = Device Number 0, 1, ...



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