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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**
MC34063ECD-TR
Active
SO-8 Industrial Ecopack2 (**)
MC34063ECN
Active
DIP-8 Industrial Ecopack2

MC34063ECD-TR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2 (**)

MC34063ECN

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

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
MC34063ECD-TR Available at 7 distributors

Distributor availability ofMC34063ECD-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 18898 1 Order Now
YOSUN ASIA/PACIFIC 2500 1 Order Now
COMPEL EUROPE 4271 1 Order Now
RS COMPONENTS EUROPE 4900 1 Order Now
AVNET AMERICA 7500 0 Order Now
MOUSER WORLDWIDE 5729 1 Order Now
Farnell Element14 EUROPE 5000 1 Order Now

Distributor reported inventory date: 2020-08-11

Distributor Name

DIGIKEY

Stock

18898

Min.Order

1

Region

WORLDWIDE Order Now

YOSUN

Stock

2500

Min.Order

1

Region

ASIA/PACIFIC Order Now

COMPEL

Stock

4271

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

4900

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

7500

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5729

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

5000

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-11

Buy now
Active
EAR99 NEC Tape And Reel SO-8 0 70 CHINA 0.196 / 1k
MC34063ECN Available at 5 distributors

Distributor availability ofMC34063ECN

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 489 1 Order Now
RS COMPONENTS EUROPE 470 10 Order Now
Newark Element14 AMERICA 38 0 Order Now
MOUSER WORLDWIDE 2585 1 Order Now
Farnell Element14 EUROPE 1945 1 Order Now

Distributor reported inventory date: 2020-08-10

Distributor Name

DIGIKEY

Stock

489

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

470

Min.Order

10

Region

EUROPE Order Now

Newark Element14

Stock

38

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2585

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1945

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-10

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

MC34063ECD-TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.196 / 1k

Distributor availability ofMC34063ECD-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 18898 1 Order Now
YOSUN ASIA/PACIFIC 2500 1 Order Now
COMPEL EUROPE 4271 1 Order Now
RS COMPONENTS EUROPE 4900 1 Order Now
AVNET AMERICA 7500 0 Order Now
MOUSER WORLDWIDE 5729 1 Order Now
Farnell Element14 EUROPE 5000 1 Order Now

Distributor reported inventory date: 2020-08-11

Distributor Name

DIGIKEY

Stock

18898

Min.Order

1

Region

WORLDWIDE Order Now

YOSUN

Stock

2500

Min.Order

1

Region

ASIA/PACIFIC Order Now

COMPEL

Stock

4271

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

4900

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

7500

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5729

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

5000

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-11

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-8

Operating Temperature (°C)

(min)

0

(max)

70

Budgetary Price (US$)* / Qty

0.196 / 1k

Country of Origin

CHINA

MC34063ECN

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.326 / 1k

Distributor availability ofMC34063ECN

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 489 1 Order Now
RS COMPONENTS EUROPE 470 10 Order Now
Newark Element14 AMERICA 38 0 Order Now
MOUSER WORLDWIDE 2585 1 Order Now
Farnell Element14 EUROPE 1945 1 Order Now

Distributor reported inventory date: 2020-08-10

Distributor Name

DIGIKEY

Stock

489

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

470

Min.Order

10

Region

EUROPE Order Now

Newark Element14

Stock

38

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2585

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1945

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-10

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