The UPC78M15H is a three-terminal positive voltage regulator manufactured by NEC. It is designed to provide a stable and regulated +15V output voltage from a higher input voltage. This regulator is commonly used in various electronic circuits to ensure a consistent power supply for sensitive components.

Applications

• Power supplies for microcontrollers
• Linear regulators in electronic circuits
• Voltage regulation in audio amplifiers
• Power management in industrial equipment
• Instrumentation and measurement devices
• Battery chargers
• Post-regulation for switching power supplies

Features

• Fixed +15V output voltage
• Output current up to 500mA
• Internal short-circuit current limiting
• Thermal overload protection
• Output transistor safe-area compensation
• Requires only a few external components

Benefits

• Provides a stable and regulated +15V power supply
• Protects the regulator and connected circuits from damage due to overcurrent
• Prevents the regulator from overheating and shutting down
• Ensures reliable operation over a wide range of input voltages and load conditions
• Simplified circuit design and reduced component count

Additional Details

The UPC78M15H voltage regulator provides a cost-effective and reliable solution for voltage regulation in a variety of applications. It operates by comparing its output voltage to an internal reference voltage and adjusting the output current to maintain the desired voltage level. The internal short-circuit current limiting feature protects the regulator from damage in the event of an output short circuit. The thermal overload protection feature shuts down the regulator if its internal temperature exceeds a safe limit. The output transistor safe-area compensation feature ensures that the regulator operates within its safe operating area, even under demanding load conditions. The UPC78M15H typically requires only input and output capacitors for stable operation. This regulator is often available in a TO-220 package for easy mounting and heat sinking.

It is important to consult the manufacturer's datasheet for specific operating conditions and recommended external components. Correct heat sinking is essential to prevent overheating, especially at higher output currents.