KA278R33CTU

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The KA278R33CTU is a fixed positive low-dropout (LDO) voltage regulator manufactured by onsemi, formerly Fairchild Semiconductor. It provides a stable 3.3 V output with a maximum current capacity of 2 A. The device operates within an input voltage range of 4 V to 10 V and features a maximum dropout voltage of 500 mV at full load. It is housed in a TO-220-4 through-hole package, suitable for power dissipation up to 15 W. The unit supports an operating temperature range from -20 °C to +80 °C and includes line regulation of 2.5% and load regulation of 2%.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Provides a fixed 3.3 V regulated output with high current capability up to 2 A
• Features low dropout voltage characteristics for efficient power conversion
• Includes internal protection mechanisms such as thermal shutdown and safe operating area protection

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• General purpose linear power supply circuits
• Battery-powered equipment requiring stable voltage regulation
• Embedded systems and microcontroller power conditioning

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify component authenticity due to the discontinued status of this part number. Confirm that the TO-220-4 package pinout matches the target design requirements. Check datasheet revisions for any changes in electrical characteristics or recommended operating conditions before finalizing procurement specifications.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 3.3 V output is required with up to 2 A load current. Ensure the input voltage remains between 4 V and 10 V to maintain proper regulation. Consider the TO-220-4 package for through-hole mounting and adequate heat dissipation needs within the specified temperature range.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This LDO regulator belongs to the KA278 series of power management integrated circuits. It is designed for applications requiring reliable voltage regulation with minimal external components. The device integrates bipolar technology to deliver consistent performance across varying load and line conditions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative LDO regulators based on pinout, voltage rating, and current capacity.