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MC34063ACD

MC34063ACD

On Semiconductor
Widely available low-cost boost controller for lower-power designs or where minimal BOM cost is a priority; good for simple, lower-current boost tasks.
Active3,238 in stock
Datasheet Digi-Key Compare Prices

Overview

The MC34063ACD is a versatile monolithic control circuit designed for DC-DC converter applications. It can be configured for buck or boost topologies, making it suitable for a wide range of power conversion needs. This device offers a cost-effective solution for lower-power designs where BOM cost is a primary consideration.

Why Choose This Part

Engineers choose the MC34063ACD for its low cost and widespread availability, making it ideal for budget-sensitive projects. Its ability to operate in both buck and boost configurations provides flexibility for various power supply designs. The active current limiting and 2% reference accuracy contribute to a robust and reliable power conversion solution.

Applications

Battery-Powered Devices
Efficiently steps up or down voltages in portable, battery-operated equipment to meet specific rail requirements.
Automotive Auxiliary Power
Provides regulated power for non-critical automotive subsystems and accessories where simple voltage conversion is needed.
Industrial Control Systems
Generates isolated or boosted voltages for sensors, actuators, or low-power control logic in industrial environments.
LED Driving
Can be adapted to drive strings of LEDs with a regulated current, offering a simple and low-cost solution for lighting applications.
Distributed Power Systems
Used as a point-of-load converter to create localized voltage rails from a main bus in distributed power architectures.

Key Specifications

Function Step-Up, Step-Down
Topology Buck, Boost
Output Type Adjustable
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Current - Output 1.5A (Switch)
Number of Outputs 1
Output Configuration Positive or Negative
Frequency - Switching 33kHz
Operating Temperature 0degC ~ 70degC (TA)
Synchronous Rectifier No
Voltage - Input (Max) 40V
Voltage - Input (Min) 3V
Voltage - Output (Max) 38V
Supplier Device Package 8-SOIC
Voltage - Output (Min/Fixed) 1.25V

Getting Started

To get started with the MC34063ACD, engineers typically use standard schematic capture and PCB layout tools. The datasheet provides comprehensive application circuits for buck and boost configurations, detailing component selection. Prototyping can be done on a breadboard or custom PCB, using common passive components to realize the power stage.

MC34063 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Sw. Freq Temp Range Voltage - Output (Max) Stock
MC34063ACD (this part) 33k 0degC ~ 70degC (TA) 38V 3,238
MC34063EBD-TR (STMicroelectronics) Tape & Reel 33k -40degC ~ 125degC .. 38V 18,130
MC34063ADR (Texas Instruments) 100k 0degC ~ 70degC (TA) 40V 88,763
MC34063ADR2G (onsemi) 100k 0degC ~ 70degC (TA) 40V 7,456
Also available as: MC34063A

Also Consider

TPS61040 TITexas Instruments - For higher efficiency and smaller form factor in boost applications, this device offers a more integrated solution with a higher switching frequency.
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