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NCP1032BMNTXG Datasheet(PDF) 1 Page - ON Semiconductor |
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NCP1032BMNTXG Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 21 page © Semiconductor Components Industries, LLC, 2014 May, 2014 − Rev. 2 1 Publication Order Number: NCP1032/D NCP1032 Low Power PWM Controller with On-Chip Power Switch and Startup Circuits for Telecom Systems The NCP1032 is a miniature high−voltage monolithic switching converter with on−chip power switch and startup circuits. It incorporates in a single IC all the active power control logic and protection circuitry required to implement, with minimal external components several switching regulator applications, such as a secondary side bias supply or a low power DC−DC converter. This converter is ideally suited for 24 V and 48 V telecom and medical isolated power supply applications. The NCP1032 can be configured in any single−ended topology such as forward or flyback converter. The NCP1032 is targeted for applications requiring up to 3 W. The internal error amplifier allows the NCP1032 to be easily configured for secondary or primary side regulation operation in isolated and non−isolated configurations. The fixed frequency oscillator is optimized for operation up to 1 MHz and is capable of external frequency synchronization, providing additional design flexibility. In addition, the NCP1032 incorporates undervoltage and overvoltage line detectors, programmable cycle−by−cycle current limit, internal soft−start, and thermal shutdown to protect the controller under fault conditions. Features • On Chip High 200 V Power Switch Circuit and Startup Circuit • Internal Startup Regulator with Auxiliary Winding Override • Programmable Oscillator Frequency Operation up to 1 MHz • External Frequency Synchronization Capability • Frequency Fold−down Under Fault Conditions • Trimmed ± 2% Internal Reference • Programmable Cycle−by−Cycle Current Limit • Internal Soft−Start • Active Leading Edge Blanking Circuit • Line Under and Over Voltage Protection • Over Temperature Protection • These are Pb−Free Devices Typical Applications • POE (Power Over Ethernet)/PD. Refer to Application Note AND8247 • Secondary Side Bias Supply for Isolated DC−DC Converters • Stand Alone Low Power DC−DC Converter • Low Power Bias Supply • Low Power Boost Converter • Medical Isolated Power Supplies • Bias Supply for Telecom Systems. Refer to App Note AND8119/D http://onsemi.com MARKING DIAGRAMS 1032 = Specific Device Marking x = A or B A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Package PIN CONNECTIONS (Note: Microdot may be in either location) See detailed ordering and shipping information in the package dimensions section on page 20 of this data sheet. ORDERING INFORMATION WDFN8 MN SUFFIX CASE 511BH 1032x ALYW G G WDFN8 (Top View) GND GND CT VFB COMP VCC VDRAIN CL UV/OV 1 |
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