KA78R09CYDTU

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

The KA78R09CYDTU is a fixed positive low-dropout (LDO) linear voltage regulator manufactured by onsemi. It provides a stable 9 V output with a maximum current capacity of 1 A. The device operates within an input voltage range of 10 V to 35 V and features a typical dropout voltage of 500 mV at full load. It incorporates internal thermal shutdown and short-circuit protection circuits for enhanced reliability. The component is housed in a compact SOT-223 package, suitable for surface-mount applications requiring efficient power management in space-constrained designs.

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

• Fixed 9 V output voltage regulation
• High current capability up to 1 A
• Integrated thermal overload and short-circuit protection
• Low dropout voltage operation

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

• Battery-powered equipment requiring stable 9 V supply
• General-purpose power management in consumer electronics
• Industrial control systems with 12 V or 24 V input rails

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

Verify the exact suffix 'CYDTU' against official onsemi documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with existing PCB footprints for the SOT-223 package. Confirm end-of-life status and availability through authorized distributors prior to final design approval.

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

Select this component when a fixed 9 V output is required from higher input voltages up to 35 V. Consider the 1 A current rating and thermal performance in the SOT-223 package. Evaluate the dropout voltage characteristics relative to the minimum input voltage in the application circuit.

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

This part belongs to the KA78R series of low-dropout regulators from onsemi. The series offers various fixed output voltages with high current capabilities. The KA78R09CYDTU specifically targets applications needing reliable 9 V regulation in surface-mount form factors.

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

Check for direct pin-compatible replacements within the KA78R series or other LDOs with similar 9 V output and 1 A current ratings. Verify thermal resistance and package dimensions match the existing design constraints.