The UA78P05SC is a programmable output voltage regulator manufactured by Fairchild/ON Semiconductor. This regulator allows users to adjust the output voltage via external resistors, offering flexibility in a variety of applications. It provides a positive output voltage and is designed for applications requiring stable and adjustable regulated power.

Applications

• Adjustable power supplies for prototyping
• Voltage trimming in electronic circuits
• Battery chargers
• On-card regulation where precise voltage is needed
• Post regulation for switching power supplies requiring fine tuning

Features

• Programmable output voltage (positive)
• Output current up to 1A
• Internal thermal overload protection
• Internal short-circuit current limiting
• Output transistor safe-area compensation
• Available in various packages

Benefits

• Adjustable and regulated output voltage for versatile applications
• Protection against thermal overload and short circuits
• Simplified circuit design with minimal external components
• Reliable operation in various environments
• Cost-effective solution for adjustable voltage regulation

Additional Details

The UA78P05SC allows the user to set the output voltage through an external resistor divider network, providing a flexible approach for a range of voltage requirements. Input and output capacitors are recommended to improve stability and transient response. The regulator is designed to withstand variations in input voltages and operating temperatures. Internal protection prevents damage from overloads and short circuits. Refer to the manufacturer's datasheet for detailed electrical characteristics, formulas for setting output voltage, thermal considerations, and recommended operating conditions. Package type impacts thermal performance.

This programmable voltage regulator is suitable for applications where an exact voltage needs to be set or adjusted in the field, or during the design process. Its robust design and flexibility make it a popular choice for various power supply applications. The UA78P05SC offers a cost-effective solution for adjustable regulated power in a broad range of electronic circuit designs.