KA34063AD

Voltage Regulators - DC DC Switching Regulators Overview

The KA34063AD is a monolithic DC-DC switching regulator IC manufactured by onsemi, housed in an 8-SOIC surface-mount package. It supports buck, boost, and inverting topologies with an adjustable output voltage. The device operates within an input voltage range of 3 V to 40 V and provides a switch current capability of 1.5 A. Internal switching frequency ranges from 100 Hz to 100 kHz. The component functions across a commercial temperature range of 0°C to 70°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a temperature-compensated reference, error amplifier, and Darlington transistor switch for efficient power conversion.
• Supports flexible circuit configurations including step-up, step-down, and inverting voltage regulation modes.
• Features internal frequency control allowing operation up to 100 kHz for compact external component sizing.

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered equipment requiring efficient voltage regulation
• General-purpose DC-to-DC conversion circuits
• Offline switcher applications

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix designation carefully as the KA34063AD part number indicates end-of-life status according to manufacturer documentation. Confirm that replacement components such as the MC34063 series meet all electrical and thermal requirements for the intended design. Ensure compatibility with existing PCB footprints and validate regulatory compliance standards before finalizing procurement decisions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring a single-inductor solution for multiple voltage rails or polarity inversion. Consider the 1.5 A peak switch current limit when determining load requirements. Evaluate the need for external Schottky diodes and inductors compatible with the 100 kHz maximum switching frequency to optimize efficiency and size constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the KA34063 family of switching regulators, which are industry-standard controllers for low-cost power supply designs. The KA34063AD variant specifically denotes the SOIC-8 surface-mount package version. It serves as a direct functional equivalent to other widely used 34063-series controllers from various manufacturers.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include MC34063ACD-TR and MC34063ECD-TR from STMicroelectronics. These alternatives offer pin-compatible replacements for designs transitioning from the discontinued KA34063AD.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum switch current capability of the KA34063AD?

The internal Darlington switch can handle a peak current of 1.5 A.

Does the KA34063AD support negative output voltages?

Yes, the device supports inverting topology configurations to generate negative output voltages.