onsemi

L79M05T-E

L79M05T-E Description

The L79M05T-E is a linear regulator IC designed for providing a stable -5V output voltage with a maximum output current of 500mA. Manufactured by onsemi, this regulator is part of the Power Management (PMIC) category and is housed in a Through Hole package, making it suitable for a variety of applications requiring a fixed negative output configuration. The L79M05T-E is known for its robust performance and reliability, offering a Power Supply Rejection Ratio (PSRR) of 50dB at 120Hz, which ensures minimal noise and ripple in the output voltage. This IC is protected against over current and over temperature conditions, enhancing its durability and safety in operation. Despite being marked as obsolete, the L79M05T-E remains a viable option for legacy systems and specific applications where its unique features are advantageous.

L79M05T-E Features

• Output Voltage and Current: The L79M05T-E provides a fixed -5V output voltage with a maximum output current of 500mA, making it suitable for applications requiring a stable and consistent power supply.
• Power Supply Rejection Ratio (PSRR): With a PSRR of 50dB at 120Hz, this regulator effectively minimizes noise and ripple in the output voltage, ensuring high performance in sensitive electronic circuits.
• Protection Features: Over current and over temperature protection features safeguard the IC from potential damage, enhancing its reliability and longevity.
• Output Configuration: The negative output configuration is ideal for applications requiring a negative voltage supply, such as certain analog circuits and power supplies.
• Mounting Type: The Through Hole mounting type facilitates easy integration into printed circuit boards (PCBs) and is compatible with a wide range of manufacturing processes.
• Moisture Sensitivity Level (MSL): With an MSL of 1 (Unlimited), the L79M05T-E is not sensitive to moisture, making it suitable for storage and handling in various environments.
• Regulation and Stability: The single regulator design ensures precise voltage regulation and stability, crucial for maintaining consistent performance in electronic systems.

L79M05T-E Applications

The L79M05T-E is well-suited for a variety of applications that require a reliable and stable negative voltage supply. Some specific use cases include:

• Analog Circuits: Providing a stable -5V supply for operational amplifiers, analog-to-digital converters (ADCs), and other analog components.
• Power Supplies: Used in power supply units where a negative voltage rail is necessary for balanced power distribution.
• Legacy Systems: Ideal for maintaining and upgrading older systems that rely on through-hole components and specific voltage requirements.
• Industrial Equipment: Suitable for industrial applications where robustness and reliability are paramount, and the negative voltage supply is essential for specific components.

Conclusion of L79M05T-E

The L79M05T-E is a reliable and robust linear regulator IC that offers a stable -5V output with a maximum current of 500mA. Its high PSRR, protection features, and negative output configuration make it a valuable component for applications requiring a reliable negative voltage supply. Despite being marked as obsolete, the L79M05T-E remains a suitable choice for legacy systems and specific applications where its unique features are advantageous. Its through-hole mounting type and moisture sensitivity level of 1 (Unlimited) further enhance its versatility and ease of integration. For engineers and designers looking for a dependable power management solution, the L79M05T-E is a proven option that delivers consistent performance and reliability.