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MC34063 Datasheet(PDF) 1 Page - ON Semiconductor |
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MC34063 Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 16 page © Semiconductor Components Industries, LLC, 2000 August, 2000 – Rev. 6 1 Publication Order Number: MC34063A/D MC34063A, MC33063A DC-to-DC Converter Control Circuits 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. • 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 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. http://onsemi.com SO–8 D SUFFIX CASE 751 PDIP–8 P, P1 SUFFIX CASE 626 1 8 1 8 1 8 SOEIAJ–8 M SUFFIX CASE 968 See detailed ordering and shipping information in the package dimensions section on page 11 of this data sheet. ORDERING INFORMATION See general marking information in the device marking section on page 11 of this data sheet. DEVICE MARKING 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 |
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