KA278R33CTU

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

The KA278R33CTU is a low-dropout voltage regulator from the KA278RXXC-Series, manufactured by onsemi. It provides a fixed 3.3 V output with a maximum current of 2 A. The device operates within an input voltage range of 4 V to 10 V and supports an operating temperature range of -20°C to +80°C. Key electrical parameters include a dropout voltage of 0.5 V at full load, line regulation of 2.5%, and load regulation of 2%. It features a quiescent current of 10 mA and utilizes a TO-220F 4L through-hole package.

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

• Integrated over-current protection, thermal shutdown, and short-circuit protection for enhanced reliability.
• Includes an output disable function controlled via the dedicated Vdis pin.
• Low dropout voltage performance ensures efficient operation under varying load conditions.

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

• Power supply circuits in various electronic equipment
• Battery-powered systems requiring stable voltage regulation
• General-purpose linear voltage regulation

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

Verify component authenticity due to potential counterfeiting risks. Purchase only from authorized distributors or directly from onsemi to ensure traceability and compliance with quality standards. Confirm that the part number matches the specific suffix requirements for your application, as nomenclature may have changed following corporate integrations.

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 capability. Ensure the input voltage remains between 4 V and 10 V to maintain proper regulation. Consider the TO-220F package for through-hole mounting and adequate heat dissipation, especially if power dissipation approaches the rated limits without a heatsink.

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

This regulator belongs to the KA278RXXC-Series, which includes variants for 3.3 V, 5 V, and 12 V outputs. The series is designed for applications needing robust protection features and low dropout characteristics. The KA278R33CTU specifically targets the 3.3 V rail generation in consumer and industrial electronics.

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

Check the official onsemi website for updated part numbers, as Fairchild Semiconductor orderable part numbers may have been modified to remove underscores during integration. Verify compatibility with existing circuit designs before substitution.