STMicroelectronics L7909 Voltage Regulator

The L7909 from STMicroelectronics is a robust and reliable negative voltage regulator designed to offer local on-card regulation. This linear voltage regulator is part of the L79 series, which is well-known for providing a wide range of fixed output voltages, making them suitable for a variety of applications. The L7909 specifically provides a fixed output voltage of -9V, which can be utilized in electronic circuits requiring a stable negative voltage supply.

Key Features

• Output Voltage: -9V with a precision of 4% at 25°C.
• Output Current: Up to 1.5A, making it capable of handling moderate power requirements.
• Thermal Overload Protection: Ensures the device remains safe even under conditions of excessive power dissipation.
• Short Circuit Protection: Offers safety and reliability by protecting the device and the load from damage due to short circuits.
• No External Components Required: This voltage regulator is designed to work without the need for external devices, simplifying circuit design.
• TO-220 Package: A commonly used package that is easy to install and handle in various circuit boards.

Applications

The L7909 voltage regulator is versatile and can be used in a multitude of applications, including:

• Power supplies for negative voltage circuits
• Instrumentation and control systems
• Automotive applications
• Consumer electronics
• Audio and video equipment

Quality and Reliability

STMicroelectronics is known for its commitment to quality, and the L7909 is no exception. It is designed to meet the stringent requirements of the most demanding applications, ensuring performance and reliability. With its built-in protection features and robust design, the L7909 is a solid choice for designers looking for a negative voltage regulator solution.