KA78R09CTSTU

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

The KA78R09CTSTU is a low-dropout voltage regulator manufactured by onsemi, designed to provide a fixed 9V output. It supports an output current of 1A and operates with an input voltage range from 11.5V to 35V. The device features a maximum dropout voltage of 500mV at full load. It includes built-in protection mechanisms such as overcurrent protection, thermal shutdown, and overvoltage protection. The component is housed in a TO-220-4 package suitable for through-hole mounting.

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

• Provides stable 9V fixed output with 1A current capability
• Integrated overcurrent and thermal shutdown protection
• Includes overvoltage protection and short circuit protection
• Features an output disable function for system control

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

• Electronic equipment requiring constant voltage power sources
• Power supply circuits needing low dropout regulation
• Systems utilizing TO-220 full-mold packages

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

Verify the specific suffix CTSTU against official onsemi documentation to confirm pinout and packaging details. Ensure compatibility with existing thermal management designs given the 15W power dissipation rating. Confirm availability status as distribution channels may vary. Cross-reference with the KA78RXXC series datasheet for complete electrical characteristics and absolute maximum ratings before integration.

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

Select this component when a fixed 9V output is required with high current capacity. The low dropout characteristic allows operation with minimal input-to-output voltage difference. Consider the TO-220-4 package for adequate heat dissipation. Verify that the application benefits from the integrated protection features, particularly overcurrent and thermal shutdown, which enhance system reliability under fault conditions.

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

This part belongs to the KA78RXXC series of low-dropout voltage regulators. It shares functional similarities with other devices in the family, offering 1A output capability in various fixed voltage options. The series is characterized by its robust protection features and suitability for general-purpose electronic equipment power supplies.

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

The KA78R33CTSTU is a similar device within the same series but provides a 3.3V output instead of 9V. Other parts in the KA78RXXC family offer different fixed voltages (e.g., 5V, 8V, 12V, 15V) while maintaining the same 1A output and protection features. Ensure the replacement matches the required output voltage.