Texas Instruments

UA78M33CKC

UA78M33CKC Description

The UA78M33CKC is a fixed positive linear voltage regulator designed by Texas Instruments. This regulator is part of the Linear & Switching Voltage Regulators category and is known for its reliable performance and robust design. It features a fixed output voltage of 3.3V and can deliver a maximum output current of 500mA. The regulator operates within an input voltage range up to 25V, making it suitable for a variety of applications requiring stable power supply. The UA78M33CKC is housed in a TO220-3 package and is designed for through-hole mounting, ensuring ease of integration into various electronic circuits. Despite being marked as obsolete, this regulator remains a viable option for many applications due to its proven reliability and performance.

UA78M33CKC Features

• Fixed Output Voltage: The UA78M33CKC provides a stable 3.3V output voltage, ensuring consistent power supply to connected devices.
• High Input Voltage Range: With a maximum input voltage of 25V, this regulator can handle a wide range of input voltages, making it versatile for different power supply scenarios.
• Robust Current Handling: The regulator is capable of delivering up to 500mA of output current, which is sufficient for many low to medium power applications.
• Low Dropout Voltage: The maximum dropout voltage of 2V at 350mA ensures efficient power conversion, even at lower input voltages.
• Protection Features: The UA78M33CKC includes over current, over temperature, and short circuit protection, enhancing its reliability and longevity.
• Wide Operating Temperature Range: The regulator operates reliably within a temperature range of 0°C to 125°C, making it suitable for both industrial and consumer applications.
• High Power Supply Rejection Ratio (PSRR): At 80dB (120Hz), the regulator effectively reduces noise and ripple, ensuring clean power output.
• Compliance and Packaging: The UA78M33CKC is REACH unaffected, ROHS3 compliant, and has a moisture sensitivity level (MSL) of 1 (unlimited), ensuring it meets environmental and safety standards. It is packaged in a tube for convenient handling and storage.

UA78M33CKC Applications

The UA78M33CKC is ideal for applications requiring a stable 3.3V power supply with moderate current capabilities. Some specific use cases include:

• Embedded Systems: Providing a stable power supply for microcontrollers and other embedded devices.
• Consumer Electronics: Suitable for powering low-power devices such as portable gadgets and small appliances.
• Industrial Control Systems: Reliable power supply for sensors, actuators, and other control components.
• Telecommunications: Powering communication modules and other low-power components in networking equipment.
• Automotive Electronics: Ensuring stable power supply for various electronic components in automotive systems.

Conclusion of UA78M33CKC

The UA78M33CKC from Texas Instruments is a reliable and versatile linear voltage regulator that offers a stable 3.3V output with a maximum current of 500mA. Its wide input voltage range, low dropout voltage, and robust protection features make it a suitable choice for a variety of applications. Despite being marked as obsolete, its proven performance and compliance with industry standards ensure it remains a valuable component for many electronic designs. The UA78M33CKC is particularly well-suited for embedded systems, consumer electronics, industrial controls, telecommunications, and automotive electronics, where a stable and efficient power supply is essential.