Datasheet Texas Instruments MC34063A — Ficha de datos

MC34063A, MC33063A, SC34063A, SC33063A, 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 http://onsemi.com MARKING DIAGRAMS
8 3x063 ALYWA G 8 1 SOIC-8 D SUFFIX CASE 751 1 8 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
8 1 Drive 8 Collector S Q 7 R 100 Ipk Oscillator CT 6 VCC Comparator + Comparator 5 Inverting Input (Bottom View) This device contains 79 active transistors. 1.25 V Reference Regulator 4 GND 3 1 Timing Capacitor x A L, WL Y, YY W, WW G or G Q2 Q1 2 Switch Emitter 1 Switch Collector 1 8 3x063V ALYWA G 3x063AP1 AWL YYWWG PDIP-8 P, P1 SUFFIX CASE 626 1 8 33063AVP AWL YYWWG 1 Ipk Sense DFN8 CASE 488AF 33063 ALYWA G = 3 or 4 = Assembly Location = Wafer Lot = Year = Work Week = Pb-Free Package Figure 1. Representative Schematic Diagram ORDERING INFORMATION
See detailed ordering and shipping information in the package dimensions section on page 12 of this data sheet. © Semiconductor Components Industries, LLC, 2010 August, 2010 -Rev. 23 1 Publication Order Number: MC34063A/D MC34063A, MC33063A, SC34063A, SC33063A, NCV33063A Switch Collector Switch Emitter Timing Capacitor GND 2 3 4 (Top View) 7 6 5 Ipk Sense VCC Comparator Inverting Input Switch Emitter Timing Capacitor GND EP Flag (Top View) Figure 2. Pin Connections MAXIMUM RATINGS
Rating 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 Plastic Package, P, P1 Suffix TA = 25°C Thermal Resistance SOIC Package, D Suffix TA = 25°C Thermal Resistance DFN Package TA = 25°C Thermal Resistance Operating Junction Temperature Operating Ambient Temperature Range MC34063A, SC34063A MC33063AV, NCV33063A MC33063A, SC33063A Storage Temperature Range Tstg P …

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SLLS636N – DECEMBER 2004 – REVISED JANUARY 2015 MC3x063A 1.5-A Peak Boost/Buck/Inverting Switching Regulators
1 Features 3 Description The MC33063A and MC34063A devices are easy-touse ICs containing all the primary circuitry needed for
building simple DC-DC converters. These devices
primarily consist of an internal temperaturecompensated reference, a comparator, an oscillator,
a PWM controller with active current limiting, a driver,
and a high-current output switch. Thus, the devices
require minimal external components to build
converters in the boost, buck, and inverting
topologies. 1 Wide Input Voltage Range: 3 V to 40 V
High Output Switch Current: Up to 1.5 A
Adjustable Output Voltage
Oscillator Frequency Up to 100 kHz
Precision Internal Reference: 2%
Short-Circuit Current Limiting
Low Standby Current 2 Applications The MC33063A device is characterized for operation
from –40°C to 85°C, while the MC34063A device is
characterized for operation from 0В°C to 70В°C. Blood Gas Analyzers: Portable …