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  • The MC34063A/E series is a monolithic control circuit which delivers the main functions for DC-DC voltage converting.

    The device contains an internal temperature compensated reference, comparator, duty cycle controlled oscillator with an active current limit circuit, driver and high current output switch. Output voltage is adjustable through two external resistors with a 2% reference accuracy.
    Employing a minimum number of external components, the MC34063A/E device series is designed for step-down, step-up and voltage-inverting applications.

    Key Features

    • Output switch current in excess of 1.5 A
    • 2 % reference accuracy
    • Low quiescent current: 2.5 mA (typ.)
    • Operating from 3 V to 40 V
    • Frequency operation to 100 kHz
    • Active current limiting

Circuit Diagram

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Technical Documentation

    • Description Version Size Action
      DS1157
      DC-DC converter control circuits
      12.0
      941.9 KB
      PDF
      DS1157

      DC-DC converter control circuits

    • Description Version Size Action
      TN1224
      Mounting instructions for SMD (surface mounting device) packages
      2.2
      1.06 MB
      PDF
      TN1224

      Mounting instructions for SMD (surface mounting device) packages

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
MC34063ACD-TR
Active
SO-8 Industrial Ecopack2 (**)
MC34063ACN
Active
DIP-8 Industrial Ecopack2

MC34063ACD-TR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2 (**)

MC34063ACN

Package:

DIP-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DIP-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

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min
max
MC34063ACD-TR Available at 11 distributors

Distributor availability ofMC34063ACD-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 11503 1 Order Now
COMPEL EUROPE 13310 1 Order Now
RS COMPONENTS EUROPE 4856 5 Order Now
AVNET AMERICA 5000 0 Order Now
FUTURE WORLDWIDE 5000 2500 Order Now
ARROW EUROPE 12500 0 Order Now
Newark Element14 AMERICA 13 0 Order Now
ARROW AMERICA 2500 2500 Order Now
MOUSER WORLDWIDE 11757 1 Order Now
Farnell Element14 EUROPE 8382 1 Order Now
RUTRONIK EUROPE 2500 2500 Order Now

Distributor reported inventory date: 2020-08-04

Distributor Name

DIGIKEY

Stock

11503

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

13310

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

4856

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

5000

Min.Order

2500

Region

WORLDWIDE Order Now

ARROW

Stock

12500

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

13

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

2500

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

11757

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

8382

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

2500

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-04

Buy now
Active
EAR99 NEC Tape And Reel SO-8 0 70 CHINA 0.219 / 1k
MC34063ACN Available at 6 distributors

Distributor availability ofMC34063ACN

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2723 1 Order Now
RS COMPONENTS EUROPE 1612 1 Order Now
FUTURE WORLDWIDE 3575 1 Order Now
ARROW EUROPE 7898 0 Order Now
MOUSER WORLDWIDE 2222 1 Order Now
ANGLIA Live EUROPE 6580 1 Order Now

Distributor reported inventory date: 2020-08-02

Distributor Name

DIGIKEY

Stock

2723

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1612

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

3575

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

7898

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

2222

Min.Order

1

Region

WORLDWIDE Order Now

ANGLIA Live

Stock

6580

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-02

Buy now
Active
EAR99 NEC Tube DIP-8 0 70 CHINA 0.326 / 1k

MC34063ACD-TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.219 / 1k

Distributor availability ofMC34063ACD-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 11503 1 Order Now
COMPEL EUROPE 13310 1 Order Now
RS COMPONENTS EUROPE 4856 5 Order Now
AVNET AMERICA 5000 0 Order Now
FUTURE WORLDWIDE 5000 2500 Order Now
ARROW EUROPE 12500 0 Order Now
Newark Element14 AMERICA 13 0 Order Now
ARROW AMERICA 2500 2500 Order Now
MOUSER WORLDWIDE 11757 1 Order Now
Farnell Element14 EUROPE 8382 1 Order Now
RUTRONIK EUROPE 2500 2500 Order Now

Distributor reported inventory date: 2020-08-04

Distributor Name

DIGIKEY

Stock

11503

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

13310

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

4856

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

5000

Min.Order

2500

Region

WORLDWIDE Order Now

ARROW

Stock

12500

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

13

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

2500

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

11757

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

8382

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

2500

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-04

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-8

Operating Temperature (°C)

(min)

0

(max)

70

Budgetary Price (US$)* / Qty

0.219 / 1k

Country of Origin

CHINA

MC34063ACN

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.326 / 1k

Distributor availability ofMC34063ACN

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2723 1 Order Now
RS COMPONENTS EUROPE 1612 1 Order Now
FUTURE WORLDWIDE 3575 1 Order Now
ARROW EUROPE 7898 0 Order Now
MOUSER WORLDWIDE 2222 1 Order Now
ANGLIA Live EUROPE 6580 1 Order Now

Distributor reported inventory date: 2020-08-02

Distributor Name

DIGIKEY

Stock

2723

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1612

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

3575

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

7898

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

2222

Min.Order

1

Region

WORLDWIDE Order Now

ANGLIA Live

Stock

6580

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-02

ECCN (EU)

NEC

Packing Type

Tube

Package

DIP-8

Operating Temperature (°C)

(min)

0

(max)

70

Budgetary Price (US$)* / Qty

0.326 / 1k

Country of Origin

CHINA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors