KA34063ADSTF

Voltage Regulators - DC DC Switching Regulators Overview

The KA34063ADSTF is a monolithic DC-to-DC converter subsystem manufactured by Fairchild Semiconductor, now part of onsemi. It operates within an input voltage range of 3V to 40V and supports adjustable output configurations for buck, boost, or inverting topologies. The device integrates a temperature-compensated bandgap reference, a comparator, and a current-limited switch capable of delivering up to 1.5A. It functions at switching frequencies between 100Hz and 100kHz and is housed in an 8-SOIC package with a wide operating temperature range of 0°C to 70°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a temperature-compensated bandgap reference and internal comparator for precise regulation
• Features a high-current internal switch rated for 1.5A continuous operation
• Supports versatile DC-to-DC conversion topologies including step-down, step-up, and inverting circuits
• Includes built-in current limiting and thermal shutdown protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered systems requiring efficient voltage regulation
• Simple DC-to-DC converter designs for industrial control
• Power supply stages in embedded electronics
• Inverting power supply applications for analog circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity through authorized distributors as the part may be obsolete. Confirm package integrity and pin alignment against the 8-SOIC specification. Check manufacturing date codes for potential lifecycle restrictions. Ensure compatibility with RoHS standards if required for specific regulatory environments. Validate supplier documentation against official onsemi datasheets.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for cost-effective single-output switching regulator designs. Consider the 1.5A internal switch limit when sizing external components. Evaluate the 100kHz maximum frequency for trade-offs between efficiency and passive component size. Ensure input voltage stays within the 3V to 40V operational window. Verify thermal management requirements for the SOIC package under load.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the KA34063 family of switching regulators, which are widely used for basic power conversion tasks. It serves as a direct equivalent to industry-standard MC34063 devices. The part represents a legacy solution from Fairchild Semiconductor, now managed by onsemi. It is designed for general-purpose power management rather than high-efficiency multi-phase applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include MC34063ACD-TR, MC34063ECD-TR, and MC34063ABD-TR from STMicroelectronics. These alternatives offer pin-compatible replacements with similar electrical characteristics. Verify that any substitute maintains the same 1.5A switch current rating and 40V input tolerance.