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MC34063A Dataheets PDF



Part Number MC34063A
Manufacturers ON Semiconductor
Logo ON Semiconductor
Description Inverting Regulator
Datasheet MC34063A DatasheetMC34063A Datasheet (PDF)

Inverting Regulator - Buck, Boost, Switching 1.5 A MC34063A, MC33063A, SC33063A, NCV33063A 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−I.

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Inverting Regulator - Buck, Boost, Switching 1.5 A MC34063A, MC33063A, SC33063A, NCV33063A 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 • NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable • These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant Drive 8 Collector S Q Q2 1 Switch Collector Ipk 7 Sense R 100 Ipk Oscillator CT Q1 2 Switch Emitter 6 VCC Comparator 5 Inverting Input Comparator + - 1.25 V Reference Regulator (Bottom View) 3 Timing Capacitor 4 GND This device contains 79 active transistors. Figure 1. Representative Schematic Diagram DATA SHEET www.onsemi.com 8 1 SOIC−8 D SUFFIX CASE 751 MARKING DIAGRAMS 8 3x063 ALYWA G 1 8 3x063V ALYWA G 1 8 1 PDIP−8 P, P1 SUFFIX CASE 626 8 3x063AP1 AWL YYWWG 1 8 33063AVP AWL YYWWG 1 x A L, WL Y, YY W, WW G or G = 3 or 4 = Assembly Location = Wafer Lot = Year = Work Week = Pb−Free Package ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 12 of this data sheet. © Semiconductor Components Industries, LLC, 2016 1 May, 2023 − Rev. 26 Publication Order Number: MC34063A/D MC34063A, MC33063A, SC33063A, NCV33063A Switch Collector 1 Switch Emitter 2 Timing 3 Capacitor GND 4 8 Driver Collector 7 Ipk Sense (Top View) 6 VCC Comparator 5 Inverting Input ÇÇ Switch Collector ÇÇ Switch Emitter ÇÇ Timing Capacitor ÇÇÇÇ GND EP Flag ÇDriver Collector ÇIpk Sense ÇVCC ÇComparator ÇInverting Input (Top View) Figure 2. Pin Connections MAXIMUM RATINGS Rating Symbol Value Unit Power Supply Voltage Comparator Input Voltage Range Switch Collector Voltage Switch Emitter Voltage (VPin 1 = 40 V) Switch Collector to Emitter Voltage Driver Collector Voltage Driver Collector Current (Note 1) Switch Current Power Dissipation and Thermal Characteristics VCC 40 Vdc VIR −0.3 to + 40 Vdc VC(switch) 40 Vdc VE(switch) 40 Vdc VCE(switch) 40 Vdc VC(driver) 40 Vdc IC(driver) 100 mA ISW 1.5 A Plastic Package, P, P1 Suffix TA = 25°C Thermal Resistance SOIC Package, D Suffix PD RqJA 1.25 W 115 °C/W TA = 25°C Thermal Resistance Thermal Resistance DFN Package TA = 25°C Thermal Resistance Operating .


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