KA378R05TSTU

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

The KA378R05TSTU is a low-dropout voltage regulator manufactured by ON Semiconductor, formerly Fairchild. It provides a fixed 5V output with a maximum current of 3A. The device operates within an input voltage range up to 35V and features a dropout voltage below 0.5V at full load. Key electrical characteristics include overcurrent protection, thermal shutdown at 150°C, and an output disable function controlled via the Vdis pin. It is housed in a TO-220F-4L package suitable for various electronic equipment requiring stable power sources.

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

• Integrated overcurrent, thermal shutdown, and short-circuit protection mechanisms
• Features an external output disable control pin for power management
• Low dropout voltage performance under full rated current conditions

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

• General purpose AC switching power supplies
• Electronic equipment requiring constant voltage power sources
• Systems needing peak current protection capabilities

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

Verify the exact part number suffix against the official ON Semiconductor database, as legacy Fairchild nomenclature may differ from current ordering systems. Confirm package availability and lead times directly with authorized distributors. Ensure compliance with RoHS standards and check for any recent product change notifications regarding the integration of Fairchild products into the ON Semiconductor portfolio before finalizing procurement.

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

Select this component when a fixed 5V output with high current capability is required. Consider the TO-220F-4L package for applications necessitating heatsinking due to power dissipation limits. Evaluate the need for the disable function if system power management requires remote control of the output state. Ensure input voltage remains within the specified absolute maximum ratings to prevent device damage.

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

This regulator belongs to the KA378 series of low-dropout voltage regulators. Originally developed by Fairchild Semiconductor, the product line has been integrated into ON Semiconductor's portfolio. The KA378R05 variant specifically targets applications requiring robust protection features alongside stable 5V regulation, distinguishing it from standard linear regulators through its comprehensive safety circuitry.

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

Check ON Semiconductor's cross-reference tool for parametrically similar parts. Verify that potential substitutes match the 3A output current, 5V fixed output, and TO-220F-4L package dimensions. Ensure replacement devices offer comparable thermal shutdown and overcurrent protection specifications.