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MC33063A-Q1 1.5A Peak Boost, Buck, Inverting Switching Regulator

1 Features

•AEC-Q100 Qualified With the Following Results:

–Device HBM ESD Classification Level 2

–Device CDM ESD Classification Level C4B

•Functional Safety-Capable

–Documentation available to aid functional safety

system design

•Wide Input Voltage Range: 3V to 40V

•High Output Switch Current: Up to 1.5A

•Adjustable Output Voltage

•Oscillator Frequency: Up to 100kHz

•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.

Package Information

PART NUMBERPACKAGE

(1)

BODY SIZE (NOM)

MC33063A-Q1SOIC (8)4.90mm × 3.91mm

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

the end of the datasheet.

−

+

QS

1.25-V

Reference

Regulator

R

C

T

I

pk

Oscillator

Q2

Q1

Switch

Collector

4

Switch

Emitter

Timing

Capacitor

GND

3

2

18

7

6

5

Comparator

InvertingInput

V

CC

I

pk

Sense

Drive

Collector

100Ω

Simplified Schematic

MC33063A-Q1

SLLS654E – APRIL 2005 – REVISED NOVEMBER 2025

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.

Produktspecifikationer