The LM78L05MK/TR is a three-terminal positive voltage regulator manufactured by HGSEMI. It provides a fixed 5V output voltage and is part of the LM78Lxx series, known for their low current output capability. This regulator is suitable for applications that require a stable 5V power source with low current consumption, such as small electronic devices and battery-powered systems.

Applications

• Power supplies for low-power microcontrollers: Regulating voltage for low-power microcontroller circuits.
• Voltage regulation in small electronic devices: Providing stable voltage for portable electronic devices.
• Battery-powered systems: Maintaining a constant voltage for battery-powered applications.
• Logic circuits power supply: Powering digital logic circuits requiring 5V.
• DIY electronics projects: Simple 5V power source for various hobbyist projects.

Features

• Output Voltage: Fixed 5V output.
• Output Current: Delivers up to 100mA output current.
• Internal Thermal Overload Protection: Shuts down the regulator in case of excessive temperature.
• Short Circuit Current Limiting: Protects the regulator and the load from damage during short circuits.
• Output Transistor Safe-Area Compensation: Ensures stable operation under varying load conditions.
• SOT-89 Package: Compact surface-mount package.

Benefits

• Stable Output Voltage: Provides a consistent 5V output, ensuring reliable operation of connected devices.
• Simplified Power Supply Design: Requires few external components, reducing design complexity and cost.
• Enhanced System Reliability: Built-in protection features safeguard the regulator and the load.
• Small Package Size: Ideal for compact electronic devices.
• Easy to Use: Simple three-terminal configuration allows for quick and straightforward implementation.

Additional Details

The LM78L05MK/TR requires a minimum input voltage of approximately 7V to maintain proper regulation. A heat sink is generally not required due to its low current output. The device is commonly available in a SOT-89 surface-mount package. Bypass capacitors at the input and output are recommended for stability and noise reduction. Refer to the manufacturer's datasheet for detailed specifications and application guidelines.