onsemi

LM7905CT

LM7905CT Description

The LM7905CT is a fixed-output linear regulator designed to provide a stable -5V output voltage with a maximum output current of 1A. Manufactured by onsemi, this regulator is part of the Power Management Integrated Circuits (PMIC) category and is housed in a Through Hole TO220-3 package. Despite its obsolete status, the LM7905CT remains a reliable choice for applications requiring a negative voltage supply.

LM7905CT Features

• Output Type: Fixed -5V output voltage ensures consistent power supply.
• Current - Output: Capable of delivering up to 1A, making it suitable for moderate power applications.
• Number of Regulators: Single regulator design simplifies circuit design and reduces component count.
• Output Configuration: Negative output configuration is ideal for applications requiring a negative voltage rail.
• Voltage Dropout (Max): A typical dropout voltage of 2V at 1A ensures efficient operation even under high load conditions.
• Operating Temperature: Wide operating temperature range from 0°C to 125°C, suitable for various environmental conditions.
• Current - Quiescent (Iq): Low quiescent current of 6 mA minimizes power consumption in standby mode.
• PSRR: High Power Supply Rejection Ratio (PSRR) of 60dB at 120Hz ensures minimal noise and ripple in the output voltage.
• Protection Features: Over-temperature and short-circuit protection enhance reliability and protect the regulator from damage.
• Moisture Sensitivity Level (MSL): MSL 1 (Unlimited) indicates the device is not sensitive to moisture, suitable for various manufacturing processes.
• Package: Supplied in a Tube package, facilitating easy handling and storage.
• REACH Status: REACH Unaffected, ensuring compliance with environmental regulations.

LM7905CT Applications

The LM7905CT is well-suited for a variety of applications that require a stable -5V power supply. Some specific use cases include:

• Analog Circuits: Provides a stable negative voltage rail for operational amplifiers, analog-to-digital converters (ADCs), and digital-to-analog converters (DACs).
• Power Supplies: Ideal for negative voltage power supplies in laboratory and industrial equipment.
• Audio Equipment: Ensures clean power supply for audio amplifiers and other sensitive audio circuits.
• Telecommunications: Suitable for powering negative voltage circuits in telecommunication systems.
• Medical Devices: Reliable power supply for medical equipment requiring a negative voltage rail.

Conclusion of LM7905CT

The LM7905CT is a robust and reliable linear regulator offering a stable -5V output with a maximum current of 1A. Its low dropout voltage, high PSRR, and protection features make it a versatile choice for a wide range of applications. Despite its obsolete status, the LM7905CT remains a valuable component for engineers and designers seeking a dependable negative voltage regulator. Its compatibility with various operating temperatures and moisture levels ensures it can be used in diverse environments. For applications requiring a negative voltage supply, the LM7905CT is an excellent choice, offering performance and reliability in a compact Through Hole package.