onsemi

L78LR05E-MA-E

L78LR05E-MA-E Description

The L78LR05E-MA-E is a linear regulator IC designed for power management applications, featuring a fixed output voltage of 5V and a maximum output current of 150mA. Manufactured by onsemi, this device is housed in a TP5HFA surface-mount package, making it suitable for compact and space-constrained designs. Despite its obsolete status, the L78LR05E-MA-E remains a reliable choice for applications requiring a stable power supply. It offers a maximum input voltage of 20V and a dropout voltage of 2.2V at 40mA, ensuring efficient operation even under varying load conditions. The regulator is equipped with over-current and over-temperature protection features, enhancing its reliability and safety in operation. Additionally, it boasts a high power supply rejection ratio (PSRR) of 79dB at 120Hz, which helps in minimizing noise and ripple in the output voltage. The L78LR05E-MA-E is REACH unaffected and RoHS3 compliant, aligning with environmental standards and ensuring its suitability for a wide range of applications.

L78LR05E-MA-E Features

• Fixed Output Voltage: Provides a stable 5V output, ideal for powering various electronic components and systems.
• High Input Voltage Range: Capable of handling input voltages up to 20V, offering flexibility in power supply design.
• Low Dropout Voltage: With a maximum dropout voltage of 2.2V at 40mA, the regulator maintains efficiency even at lower input-to-output voltage differentials.
• Over-Current and Over-Temperature Protection: Ensures safe operation by protecting the device from excessive current and temperature, enhancing reliability.
• High PSRR: A power supply rejection ratio of 79dB at 120Hz helps in reducing noise and ripple, ensuring clean power delivery.
• Surface-Mount Packaging: The TP5HFA package is suitable for surface-mount technology, facilitating compact and efficient PCB designs.
• Environmental Compliance: REACH unaffected and RoHS3 compliant, making it suitable for environmentally conscious applications.
• Reset Control Feature: Provides a reset function, useful for system initialization and fault recovery.

L78LR05E-MA-E Applications

The L78LR05E-MA-E is well-suited for a variety of applications where a stable and reliable power supply is crucial. Its fixed 5V output and 150mA current capability make it ideal for powering microcontrollers, sensors, and other low-power electronic devices. The regulator's high input voltage range and low dropout voltage ensure it can operate efficiently in systems with varying input voltage levels, such as battery-powered devices or those using unregulated power supplies. The over-current and over-temperature protection features make it a robust choice for applications in harsh environments or those requiring high reliability. Specific use cases include:

• Consumer Electronics: Ideal for powering small gadgets and peripherals that require a stable 5V supply.
• Industrial Control Systems: Suitable for powering sensors and actuators in industrial environments where reliability and noise reduction are critical.
• Automotive Applications: Can be used in automotive electronics where a stable power supply is essential for proper operation.
• Medical Devices: Provides a reliable power source for medical equipment that requires low noise and high reliability.

Conclusion of L78LR05E-MA-E

The L78LR05E-MA-E is a versatile linear regulator IC that offers a stable 5V output and a maximum current of 150mA. Its high input voltage range, low dropout voltage, and robust protection features make it a reliable choice for a wide range of applications. Despite being marked as obsolete, its performance benefits and environmental compliance ensure it remains a suitable option for new designs. The combination of its high PSRR, surface-mount packaging, and reset control feature further enhances its appeal in modern electronic systems.