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MC34063AP1 Folha de dados(PDF) 1 Page - ON Semiconductor |
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MC34063AP1 Folha de dados(HTML) 1 Page - ON Semiconductor |
1 / 13 page © Semiconductor Components Industries, LLC, 2007 February, 2007 − Rev. 19 1 Publication Order Number: MC34063A/D MC34063A, MC33063A, NCV33063A 1.5 A, Step−Up/Down/ Inverting Switching Regulators The MC34063A Series is a monolithic control circuit containing the primary functions required for DC−to−DC converters. These devices consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This series was specifically designed to be incorporated in Step−Down and Step−Up and Voltage−Inverting applications with a minimum number of external components. Refer to Application Notes AN920A/D and AN954/D for additional design information. Features • Operation from 3.0 V to 40 V Input • Low Standby Current • Current Limiting • Output Switch Current to 1.5 A • Output Voltage Adjustable • Frequency Operation to 100 kHz • Precision 2% Reference • Pb−Free Packages are Available Figure 1. Representative Schematic Diagram SQ R Q2 Q1 100 Ipk Oscillator CT Comparator + − 1.25 V Reference Regulator 1 2 3 4 5 6 7 8 Drive Collector Ipk Sense VCC Comparator Inverting Input Switch Collector Switch Emitter Timing Capacitor GND (Bottom View) This device contains 51 active transistors. SOIC−8 D SUFFIX CASE 751 PDIP−8 P, P1 SUFFIX CASE 626 1 8 1 8 See detailed ordering and shipping information in the package dimensions section on page 11 of this data sheet. ORDERING INFORMATION 1 Switch Collector Switch Emitter Timing Capacitor GND Driver Collector Ipk Sense VCC Comparator Inverting Input (Top View) 2 3 45 6 7 8 PIN CONNECTIONS http://onsemi.com x = 3 or 4 A = Assembly Location L, WL = Wafer Lot Y, YY = Year W, WW = Work Week G or G = Pb−Free Package 1 8 3x063AP1 AWL YYWWG 1 8 33063AVP AWL YYWWG 3x063 ALYWA G 1 8 MARKING DIAGRAMS |
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