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MC33063A Datasheet Preview

MC33063A Datasheet

1.5-A Peak Boost/Buck/Inverting Switching Regulators

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MC33063A, MC34063A
SLLS636N – DECEMBER 2004 – REVISED JANUARY 2015
MC3x063A 1.5-A Peak Boost/Buck/Inverting Switching Regulators
1 Features
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
• Blood Gas Analyzers: Portable
• Cable Solutions
• HMIs (Human Machine Interfaces)
• Telecommunications
• Portable Devices
• Consumer & Computing
• Test & Measurement
3 Description
The MC33063A and MC34063A devices are easy-to-
use ICs containing all the primary circuitry needed for
building simple DC-DC converters. These devices
primarily consist of an internal temperature-
compensated 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.
The MC33063A device is characterized for operation
from –40°C to 85°C, while the MC34063A device is
characterized for operation from 0°C to 70°C.
Device Information(1)
PART NUMBER PACKAGE (PIN)
BODY SIZE
SOIC (8)
4.90 mm × 3.91 mm
MC3x063A
SON (8)
4.00 mm × 4.00 mm
PDIP (8)
9.81 mm × 6.35 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Simplified Schematic
Drive 8
Collector
Ipk
Sense
7
SQ
Q2
R
100 W
Q1
Ipk
Oscillator CT
1 Switch
Collector
2 Switch
Emitter
VCC
6
Comparator 5
Inverting Input
+
1.25-V
Reference
Regulator
3 Timing
Capacitor
4
GND
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




etcTI

MC33063A Datasheet Preview

MC33063A Datasheet

1.5-A Peak Boost/Buck/Inverting Switching Regulators

No Preview Available !

MC33063A, MC34063A
SLLS636N – DECEMBER 2004 – REVISED JANUARY 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Simplified Schematic............................................. 1
5 Revision History..................................................... 2
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ...................................... 4
7.2 ESD Ratings.............................................................. 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 4
7.5 Electrical Characteristics—Oscillator ........................ 4
7.6 Electrical Characteristics—Output Switch................. 5
7.7 Electrical Characteristics—Comparator .................... 5
7.8 Electrical Characteristics—Total Device ................... 5
7.9 Typical Characteristics .............................................. 6
8 Detailed Description .............................................. 7
8.1 Overview ................................................................... 7
8.2 Functional Block Diagram ......................................... 7
8.3 Feature Description................................................... 7
8.4 Device Functional Modes.......................................... 7
9 Application and Implementation .......................... 8
9.1 Application Information.............................................. 8
9.2 Typical Application .................................................... 9
10 Power Supply Recommendations ..................... 17
11 Layout................................................................... 17
11.1 Layout Guidelines ................................................. 17
11.2 Layout Example .................................................... 17
12 Device and Documentation Support ................. 18
12.1 Related Links ........................................................ 18
12.2 Trademarks ........................................................... 18
12.3 Electrostatic Discharge Caution ............................ 18
12.4 Glossary ................................................................ 18
13 Mechanical, Packaging, and Orderable
Information ........................................................... 18
5 Revision History
Changes from Revision M (January 2011) to Revision N
Page
• Added Applications, Device Information table, Pin Functions table, ESD Ratings table, Thermal Information table,
Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply
Recommendations section, Layout section, Device and Documentation Support section, and Mechanical,
Packaging, and Orderable Information section. ..................................................................................................................... 1
• Deleted Ordering Information table. ....................................................................................................................................... 1
2 Submit Documentation Feedback
Copyright © 2004–2015, Texas Instruments Incorporated
Product Folder Links: MC33063A MC34063A


Part Number MC33063A
Description 1.5-A Peak Boost/Buck/Inverting Switching Regulators
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