Transcription of MC34063A, MC33063A, 1.5 A, Step-Up/Down/ Inverting ...
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Semiconductor Components Industries, LLC, 2003 December, 2003 Rev. 111 Publication Order Number:MC34063A/DMC34063A, MC33063A, A, Step-Up/Down/ Inverting SwitchingRegulatorsThe MC34063A Series is a monolithic control circuit containing theprimary functions required for DC to DC converters. These devicesconsist 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 specificallydesigned to be incorporated in Step Down and Step Up andVoltage Inverting applications with a minimum number of externalcomponents. Refer to Application Notes AN920A/D and AN954/Dfor additional design information. Operation from V to 40 V Input Low Standby Current Current Limiting Output Switch Current to A Output voltage Adjustable Frequency Operation to 100 kHz Precision 2% ReferenceFigure 1.
Voltage−Inverting applications with a minimum number of external ... Step−Down Converter 11a. External NPN Switch 11b. External PNP Saturated Switch 8 7 6 Rsc Vin 1 2 Vout 8 7 6 Rsc Vin 1 2 V Figure 11. External Current Boost Connections for IC Peak Greater than 1.5 A. MC34063A, MC33063A, NCV33063A
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