onsemi

MC79L05ABPRA

MC79L05ABPRA Description

The MC79L05ABPRA is a linear voltage regulator designed by onsemi, offering a fixed negative output voltage of -5V with a maximum output current of 100mA. This regulator is housed in a TO92-3 package, making it suitable for through-hole mounting. Despite being marked as obsolete, the MC79L05ABPRA remains a reliable choice for applications requiring a stable negative voltage supply. The regulator features a maximum dropout voltage of 1.7V at 40mA, ensuring efficient operation even under varying load conditions. It also boasts a high power supply rejection ratio (PSRR) of 49dB at 120Hz, which helps in maintaining output voltage stability against fluctuations in the input supply.

MC79L05ABPRA Features

• Output Type: Fixed negative output voltage of -5V.
• Output Current: Capable of delivering up to 100mA.
• Number of Regulators: Single regulator.
• Output Configuration: Negative.
• Voltage Dropout: Maximum of 1.7V at 40mA (typical), ensuring efficient operation under varying loads.
• PSRR: 49dB at 120Hz, providing excellent noise rejection and stable output voltage.
• Protection Features: Equipped with over-temperature and short-circuit protection, enhancing reliability and safety.
• Moisture Sensitivity Level (MSL): Level 1 (unlimited), suitable for a wide range of environmental conditions.
• Mounting Type: Through-hole, facilitating easy integration into various circuit designs.
• Package: Tape & Reel (TR), ensuring convenient handling and storage.
• Product Status: Obsolete, but still available for legacy systems and specific applications.
• REACH Status: REACH unaffected, complying with environmental and safety regulations.

MC79L05ABPRA Applications

The MC79L05ABPRA is ideal for applications requiring a stable negative voltage supply, such as:

• Analog Circuits: Providing a clean and stable -5V supply for operational amplifiers, analog-to-digital converters (ADCs), and other sensitive analog components.
• Power Supplies: Used in power supply units where a negative voltage rail is necessary.
• Medical Equipment: Ensuring reliable operation in medical devices that require precise voltage regulation.
• Industrial Control Systems: Offering stable power for control circuits and sensors in industrial environments.
• Telecommunications: Providing stable power for communication modules and interfaces.

Conclusion of MC79L05ABPRA

The MC79L05ABPRA, despite being marked as obsolete, remains a robust and reliable choice for applications requiring a stable -5V supply. Its high PSRR, low dropout voltage, and built-in protection features make it a versatile regulator suitable for a wide range of applications. While newer alternatives may offer additional features, the MC79L05ABPRA's proven performance and compatibility with legacy systems ensure it continues to be a valuable component in the electronics industry.