The 78L15L-AB3-R is a three-terminal positive voltage regulator manufactured by UTC (Unisonic Technologies Co., Ltd.). This regulator is designed to provide a stable 15V output voltage from a higher input voltage, making it suitable for a variety of electronic applications requiring a regulated power supply. Its small size and low current capabilities make it ideal for portable and battery-powered devices.

Applications

• Voltage regulation in portable electronic devices
• Power supplies for small microcontrollers and sensors
• Battery-powered equipment requiring a stable 15V supply
• Linear regulators for noise-sensitive circuits
• Post-regulation for switching power supplies
• Instrumentation and measurement equipment
• Educational electronics projects

Features

• Fixed 15V output voltage
• Low quiescent current for energy efficiency
• Internal short-circuit current limiting for protection
• Thermal overload protection to prevent overheating
• Output transistor safe-area compensation
• Available in a small TO-92 package for space-constrained applications

Benefits

• Provides a stable and reliable 15V power supply
• Extends battery life due to low quiescent current
• Protects the regulator and connected circuitry from damage
• Prevents regulator failure due to excessive heat
• Enhances the regulator's reliability and robustness
• Easy to integrate into compact electronic designs

Additional Details

The 78L15L-AB3-R requires a minimum input voltage slightly above 15V to operate correctly (typically around 17-18V). The maximum input voltage is typically around 30V. It can provide an output current of up to 100mA. The regulator includes internal protection features such as short-circuit current limiting and thermal overload protection. These features help to prevent damage to the regulator and the connected circuitry in the event of a fault condition. The TO-92 package makes it easy to mount on printed circuit boards and breadboards. A small heat sink may be required if the regulator is operated at high input voltages or output currents.