KA278R12CYDTU

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

The KA278R12CYDTU is a fixed-output low-dropout voltage regulator providing a nominal 12 V output with a maximum continuous current of 2 A. It operates within an input voltage range of 13 V to 29 V and maintains a dropout voltage below 0.5 V at full load. The device features integrated peak current protection, thermal shutdown, overvoltage protection, and short-circuit protection. It includes an output disable function controlled by the fourth pin. The component is housed in a TO-220F 4L package with forming leads and supports an operating temperature range from -20°C to +80°C.

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

• Integrated peak current protection, thermal shutdown, overvoltage protection, and short-circuit protection for enhanced reliability.
• Dedicated output disable function allows external control of the regulator state via the fourth pin.
• Low dropout characteristic ensures stable regulation with minimal input-to-output voltage differential.

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

• Constant voltage power sources for various electronic equipment
• Power supply stages requiring built-in overload and thermal protection
• Systems utilizing external logic signals to enable or disable regulated outputs

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

Verify that the specific ordering suffix matches the required tape-and-reel packaging format (Forming) rather than standard rail packing. Confirm compatibility with the updated ON Semiconductor nomenclature system, as legacy Fairchild part numbers containing underscores may have been converted to dashes during integration. Ensure the procurement channel provides traceability documentation consistent with manufacturer standards.

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

Select this component when a fixed 12 V output is required alongside robust internal protection mechanisms. The inclusion of a dedicated disable pin makes it suitable for applications necessitating active power management control. Verify that the application's thermal environment remains within the specified junction temperature limits given the package's thermal resistance characteristics.

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

This regulator belongs to the KA278RXXC series, which encompasses fixed-output variants including 3.3 V, 5 V, and 12 V options. The series shares common architectural features such as the TO-220 full-mold package and identical protection circuitry across different voltage ratings. The KA278RA05C variant represents the adjustable counterpart within the same family.

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

KA278R12CTU