MC34063ABD-TR

Voltage Regulators - DC DC Switching Regulators Overview

The MC34063ABD-TR is a monolithic DC-DC converter control circuit from STMicroelectronics, housed in an 8-pin SOIC surface-mount package. It supports input voltages from 3 V to 40 V and delivers an output current exceeding 1.5 A. The device operates at switching frequencies up to 100 kHz and provides adjustable output voltage ranging from 5 V to 28 V. It functions within an operating temperature range of -40 °C to +85 °C. The integrated high-current output switch eliminates the need for external pass transistors, simplifying design for buck, boost, and inverting topologies.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-current output switch capable of delivering over 1.5 A without external components
• Includes active current limiting circuitry to protect against overload conditions
• Features an internal temperature-compensated reference with 2% accuracy for stable regulation

Voltage Regulators - DC DC Switching Regulators Applications

• Step-down (buck) DC-DC conversion circuits
• Step-up (boost) DC-DC conversion circuits
• Voltage-inverting power supply designs

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'TR' confirms tape-and-reel packaging when sourcing. Confirm the 'ABD' designation aligns with the required industrial temperature grade (-40°C to +85°C). Ensure the SOIC-8 footprint matches your PCB layout constraints. Cross-reference the manufacturer part number directly with official STMicroelectronics documentation to avoid counterfeit or obsolete variants.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring a minimal external component count and robust current handling. The fixed 100 kHz switching frequency allows for smaller passive filters compared to lower-frequency alternatives. Consider the 8-pin SOIC package size relative to available board space. Verify that the 1.5 A switch current rating meets peak load requirements including transient spikes.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the MC34063 family of DC-DC converter controllers, widely recognized for their versatility in basic power conversion tasks. The MC34063ABD-TR specifically denotes the industrial temperature variant packaged in reels for automated assembly. It serves as a cost-effective solution for low-to-medium power isolated and non-isolated converters.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

MC33063ADR is a documented substitute from Texas Instruments offering similar functionality.