Product overview
Description
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.
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All 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
All resources
Resource title | Version | Latest update |
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Product Specifications (1)
Resource title | Version | Latest update | ||
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13.0 | 15 Jan 2025 | 15 Jan 2025 |
Technical Notes & Articles (1)
Resource title | Version | Latest update | ||
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2.4 | 11 Jul 2023 | 11 Jul 2023 |
Brochures (1)
Resource title | Version | Latest update | ||
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6.0 | 30 Jul 2024 | 30 Jul 2024 |
EDA Symbols, Footprints and 3D Models
STMicroelectronics - MC34063AC
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Symbols

Footprints

3D models
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 |
Marketing Status
Package
SO-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 | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | ||||||||||||||||||||||||||||||||||||||||||||||
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min | max | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
MC34063ACD-TR | | | Available at 7 distributors Distributor availability of MC34063ACD-TR
Distributor reported inventory date: 3/9/2025 | | | | Buy from Distributor | | ||||||||||||||||||||||||||||||||||||||||||||||||||
MC34063ACN | | | Available at 3 distributors Distributor availability of MC34063ACN
Distributor reported inventory date: 3/8/2025 | | | | Buy from Distributor | |
MC34063ACD-TR Active
Part Number:
MC34063ACD-TR
Operating Temperature (°C)
Min:
Max:
Farnell Element14
Stock
2330Min.Order
1MOUSER
Stock
5622Min.Order
1FUTURE
Stock
2500Min.Order
2500AVNET
Stock
5000Min.Order
0DIGIKEY
Stock
4537Min.Order
1Newark Element14
Stock
134Min.Order
0YOSUN
Stock
190Min.Order
1Distributor reported inventory date: 3/9/2025
Stock
Min.Order
MC34063ACN Active
Part Number:
MC34063ACN
Operating Temperature (°C)
Min:
Max:
ANGLIA Live
Stock
190Min.Order
1MOUSER
Stock
1036Min.Order
1DIGIKEY
Stock
1440Min.Order
1Distributor reported inventory date: 3/8/2025
Stock
Min.Order
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors