KA7805ETSTU

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

The KA7805ETSTU is a three-terminal positive voltage regulator from the KA78XXE series, manufactured by ON Semiconductor. It provides a fixed output voltage of 5 V with a tolerance of ±4% at 25°C. The device supports an output current up to 1 A and operates within a temperature range of -40°C to +125°C. It utilizes a TO-220 package with dual gauge pins for through-hole mounting. Key electrical characteristics include a maximum input voltage of 35 V, a typical dropout voltage of 2 V at 1 A, and a quiescent current of approximately 8 mA.

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

• Integrated thermal overload protection prevents damage during overheating conditions.
• Built-in short-circuit protection limits current flow during output faults.
• Output transistor safe operating area protection ensures stability under varying load conditions.

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

• DC power supplies
• Local regulation for on-card distribution
• Regulators for battery chargers

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

Verify the specific ordering suffix 'ST' against the manufacturer's current documentation, as Fairchild part numbers were transitioned to ON Semiconductor nomenclature. Confirm that the component matches the KA78XXE series specifications rather than the KA78XXAE series, which has different operating temperature ranges. Ensure the package type corresponds to the TO-220 form factor listed in the datasheet.

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

Select this component when a fixed 5 V output is required with high current capability up to 1 A. The wide operating temperature range makes it suitable for industrial environments. Consider the thermal resistance values if heat sinking is necessary to maintain performance above standard ratings. Verify input voltage requirements do not exceed the absolute maximum rating of 35 V.

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

This regulator belongs to the KA78XXE family of three-terminal positive regulators. These devices are designed for general-purpose linear regulation applications. The series offers multiple fixed output voltages, allowing flexibility in power supply design. The TO-220 package facilitates easy mounting and heat dissipation for higher current loads.

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

KA7805ETU

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

What is the maximum input voltage for the KA7805ETSTU?

The maximum input voltage is 35 V for output voltages ranging from 5 V to 18 V.

Does the device include protection features?

Yes, it includes internal current limiting, thermal shut-down, and safe operating area protection.