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MC33063A-Q1 Datasheet

Inverting Switching Regulator

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MC33063A-Q1
SLLS654C – APRIL 2005 – REVISED DECEMBER 2014
MC33063A-Q1 1.5-A Peak Boost, Buck, Inverting Switching Regulator
1 Features
1 AEC-Q100 Qualified With the Following Results:
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C4B
• 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
Automotive: Buck, Boost, and Inverting
Topologies
3 Description
The MC33063A-Q1 device is an easy-to-use IC
containing all the primary circuitry needed for building
simple DC-DC converters. The device primarily
consists 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 device requires
minimal external components to build converters in
the boost, buck, and inverting topologies.
The MC33063A-Q1 device is characterized for
operation from –40°C to 125°C.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
MC33063A-Q1
SOIC (8)
4.90 mm × 3.91 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
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
Inverting Input
5
+
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.




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MC33063A-Q1 Datasheet Preview

MC33063A-Q1 Datasheet

Inverting Switching Regulator

No Preview Available !

MC33063A-Q1
SLLS654C – APRIL 2005 – REVISED DECEMBER 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Oscillator Characteristics .......................................... 5
6.6 Output Switch Characteristics................................... 5
6.7 Comparator Characteristics ...................................... 5
6.8 Total Device Characteristics ..................................... 5
6.9 Typical Characteristics .............................................. 6
7 Detailed Description .............................................. 7
7.1 Overview ................................................................... 7
7.2 Functional Block Diagram ......................................... 7
7.3 Feature Description................................................... 7
7.4 Device Functional Modes.......................................... 9
8 Application and Implementation ........................ 10
8.1 Application Information .......................................... 10
8.2 Typical Applications ............................................... 10
9 Power Supply Recommendations...................... 18
10 Layout................................................................... 19
10.1 Layout Guidelines ................................................. 19
10.2 Layout Example .................................................... 19
11 Device and Documentation Support ................. 22
11.1 Trademarks ........................................................... 22
11.2 Electrostatic Discharge Caution ............................ 22
11.3 Glossary ................................................................ 22
12 Mechanical, Packaging, and Orderable
Information ........................................................... 22
4 Revision History
Changes from Revision B (September 2008) to Revision C
Page
• Added the ESD Ratings table, Feature Description section, Device Functional Modes section, Application and
Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation
Support section, and Mechanical, Packaging, and Orderable Information section ............................................................... 1
2 Submit Documentation Feedback
Copyright © 2005–2014, Texas Instruments Incorporated
Product Folder Links: MC33063A-Q1


Part Number MC33063A-Q1
Description Inverting Switching Regulator
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