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NCP5211ADR2 Datasheet(PDF) 1 Page - ON Semiconductor |
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NCP5211ADR2 Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 16 page © Semiconductor Components Industries, LLC, 2003 December, 2003 − Rev. 3 1 Publication Order Number: NCP5211A/D NCP5211A Low Voltage Synchronous Buck Controller The NCP5211A is a low voltage synchronous buck controller. It contains all required circuitry for a synchronous buck converter using external N−Channel MOSFETs. High current internal gate drivers are capable of driving low RDS(on) NFETs for better efficiency. The NCP5211A is in a 14 pin package to minimize PCB area. The NCP5211A provides overcurrent protection, undervoltage lockout, soft start and built in adaptive nonoverlap. The NCP5211A is adjustable over a frequency range of 150 kHz to 750 kHz. This gives the designer more flexibility to make efficiency and component size compromises. The NCP5211A will operate on a single supply or a separate boost supply. Features • Switching Regulator Controller − N−Channel Synchronous Buck Design − 1.0 Amp Gate Drive Capability − 200 ns Transient Response − Programmable Operating Frequency of 150 kHz−750 kHz − 0.8 V 1% Internal Reference − Lossless Inductor Sensing Overcurrent Protection − Cycle−by−Cycle Short Circuit Protection − Programmable Soft Start − 40 ns GATE Rise and Fall Times (3.3 nF Load) − 70 ns Adaptive FET Nonoverlap Time − Differential Remote Sense Capability • System Power Management − Operation with a Conversion Rail of 5.0 V or 12 V − Undervoltage Lockout − On/Off Control Through Use of the COMP Pin − Max Duty Cycle Clamped to 70% for Forward Converter Control Applications • Set Top Devices • Forward Converters • Buck Converters • Point of Load Regulation MARKING DIAGRAM B = Assembly Location WL = Wafer Lot Y = Year WW = Work Week 1 GATE(L) PGND SGND VFB GATE(H) IS+ IS− ROSC VCC PIN CONNECTIONS VC BST LGND VFFB COMP SOIC−14 D SUFFIX CASE 751A 1 14 NCP5211A BWLYWW http://onsemi.com Device Package Shipping† ORDERING INFORMATION NCP5211AD SO−14 55 Units/Rail NCP5211ADR2 SO−14 2500 Tape & Reel †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D. |
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