−

+

Q

S

1.25-V

Reference

Regulator

R

Oscillator

Q2

Q1

Switch

Collector

4

Switch

Emitter

Timing

Capacitor

GND

3

2

1

8

7

6

5

Comparator

Inverting Input

Sense

Drive

Collector

100 W

Product

Folder

Sample &

Buy

Technical

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Software

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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

3 Description

The MC33063A-Q1 device is an easy-to-use IC

1

•

AEC-Q100 Qualified With the Following Results:

containing all the primary circuitry needed for building

–

Device HBM ESD Classification Level 2

simple DC-DC converters. The device primarily

–

Device CDM ESD Classification Level C4B

consists of an internal temperature-compensated

reference, a comparator, an oscillator, a PWM

•

Wide Input Voltage Range: 3 V to 40 V

controller with active current limiting, a driver, and a

•

High Output Switch Current: Up to 1.5 A

high-current output switch. Thus, the device requires

•

Adjustable Output Voltage

minimal external components to build converters in

the boost, buck, and inverting topologies.

•

Oscillator Frequency: Up to 100 kHz

•

Precision Internal Reference: 2%

The

MC33063A-Q1

device

is

characterized

for

operation from –40°C to 125°C.

•

Short-Circuit Current Limiting

•

Low Standby Current

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

2 Applications

MC33063A-Q1

SOIC (8)

4.90 mm × 3.91 mm

Automotive:

Buck,

Boost,

and

Inverting

(1) For all available packages, see the orderable addendum at

Topologies

the end of the datasheet.

Simplified Schematic

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.