onsemi

L78MR05R-E

L78MR05R-E Description

The L78MR05R-E is a linear voltage regulator designed by onsemi, a leading manufacturer in the power management integrated circuit (PMIC) category. This regulator is specifically engineered to provide a stable 5V output with a maximum output current of 500mA. It operates within an input voltage range up to 20V, making it suitable for a variety of applications where a fixed positive output configuration is required. The L78MR05R-E is housed in a TO220-5H package and is available in a tube packaging format. It features a Power Supply Rejection Ratio (PSRR) of 80dB to 77dB at 120Hz, ensuring minimal noise and ripple in the output voltage.

L78MR05R-E Features

• Fixed Output Voltage: The L78MR05R-E provides a stable 5V output, making it ideal for applications requiring a consistent power supply.
• High Input Voltage Range: With a maximum input voltage of 20V, this regulator can handle a wide range of input voltages, enhancing its versatility.
• High PSRR: The regulator boasts a PSRR of 80dB to 77dB at 120Hz, ensuring high performance in environments with significant power supply noise.
• Over Current and Over Temperature Protection: These protection features safeguard the regulator and connected circuits from damage due to excessive current or temperature.
• Reset Control Feature: The reset feature allows for controlled power-up and power-down sequences, enhancing system reliability.
• Through Hole Mounting: The through-hole mounting type ensures robust mechanical stability and ease of integration into printed circuit boards.
• Moisture Sensitivity Level (MSL) 1: The L78MR05R-E has an MSL rating of 1, indicating it is not sensitive to moisture, which is beneficial for applications in humid environments.
• REACH Compliance: The regulator is REACH unaffected, ensuring it meets environmental and safety standards.

L78MR05R-E Applications

The L78MR05R-E is well-suited for a variety of applications where a reliable and stable power supply is crucial. Some specific use cases include:

• Consumer Electronics: Ideal for powering devices such as smartphones, tablets, and other portable electronics that require a stable 5V supply.
• Industrial Equipment: Suitable for industrial control systems, sensors, and actuators that need a reliable power source.
• Telecommunications: be Can used in communication devices and infrastructure where a consistent power supply is essential.
• Automotive: Applicable in automotive electronics, such as infotainment systems and electronic control units, where robustness and reliability are paramount.
• Medical Devices: Suitable for medical equipment that requires a stable power supply to ensure accurate and reliable operation.

Conclusion of L78MR05R-E

The L78MR05R-E is a robust and versatile linear voltage regulator that offers a stable 5V output with a maximum current of 500mA. Its high PSRR, over current and over temperature protection, and reset control feature make it a reliable choice for a wide range of applications. The through-hole mounting and moisture sensitivity level 1 rating further enhance its durability and ease of integration. Despite being marked as obsolete, the L78MR05R-E remains a valuable component for applications requiring a stable and reliable power supply. Its compliance with REACH standards ensures it meets environmental and safety requirements, making it a responsible choice for modern electronics.