onsemi

MC33063ADR2

MC33063ADR2 Description

The MC33063ADR2 from onsemi is a versatile DC-DC switching voltage regulator IC designed for buck, boost, and inverting converter topologies. Housed in an 8-pin SOIC package, it supports adjustable output voltage (1.25V to 40V) with a wide input voltage range (3V to 40V), making it suitable for diverse power supply designs. Capable of delivering up to 1.5A switch current, it operates at a fixed switching frequency of 100kHz, balancing efficiency and component size. Though marked as obsolete, it remains a reliable choice for legacy systems due to its robust performance and flexibility in positive or negative output configurations.

MC33063ADR2 Features

• Adjustable Output: Configurable from 1.25V to 40V via external resistors.
• High Input Voltage Tolerance: Supports up to 40V, ideal for automotive or industrial applications.
• Multi-Topology Support: Functions in buck, boost, and inverting modes.
• Compact & Reliable: Surface-mount SOIC package with MSL 1 (Unlimited) moisture sensitivity.
• Integrated Switching Transistor: Eliminates the need for an external switch in many designs.
• Low Minimum Input Voltage: Operates down to 3V, enabling battery-powered applications.

MC33063ADR2 Applications

• Automotive Systems: Power management in 12V/24V battery-based systems.
• Industrial Controls: Voltage conversion for PLC modules, sensors, and actuators.
• Portable Electronics: Efficient power delivery in battery-operated devices.
• LED Drivers: Constant-current supply for LED arrays.
• Legacy Equipment Maintenance: Replacement for obsolete power modules in medical or military hardware.

Conclusion of MC33063ADR2

The MC33063ADR2 stands out for its versatility, wide voltage range, and compact design, making it a pragmatic choice for engineers needing adjustable, high-efficiency power conversion. While newer alternatives exist, its proven reliability and multi-topology support ensure continued relevance in industrial, automotive, and portable applications. For legacy designs or cost-sensitive projects, this IC remains a practical, high-performance solution.