The KA78L12 is a three-terminal positive regulator available in the TO-92 package. It is designed for a wide range of applications. This device is designed with thermal overload protection.

Applications

• Power management in electronic circuits
• Voltage regulation in consumer electronics
• Regulation for logic systems
• Battery chargers
• Linear power supplies

Features

• Output Current up to 100mA
• No External Components Required
• Internal Thermal Overload Protection
• Internal Short Circuit Current Limiting
• Output Voltage Tolerance of ±5%

Benefits

• Provides a stable and regulated 12V output voltage.
• Simplified circuit design due to minimal external components.
• Protects the regulator from overheating and damage due to excessive power dissipation.
• Prevents damage to the regulator and connected circuitry during short circuit conditions.
• Ensures a consistent output voltage within a specified range.

Additional Details

The KA78L12 requires a minimum input voltage of approximately 14.5V to ensure proper regulation. The maximum input voltage should not exceed 30V. It's commonly used in applications where a tightly regulated 12V supply is needed from a higher voltage source. The device operates over a temperature range of -40°C to +125°C. The quiescent current is typically around 1.7mA. A small bypass capacitor (e.g., 0.1uF) is often recommended at the input and output for improved stability.