The L78L09ACU is a fixed output voltage regulator from STMicroelectronics, designed to offer a stable 9V output from a larger input voltage range. This regulator is part of the L78L series, which is widely recognized for its reliability and efficiency in providing linear voltage regulation. The L78L09ACU is an ideal choice for low-power applications that require a consistent 9V power supply.

Key Features

• Output Voltage: Fixed at 9V, which is suitable for a variety of electronic circuits that operate at this standard voltage level.
• Output Current: Capable of delivering up to 100mA of load current, making it suitable for small-scale applications such as powering sensors, microcontrollers, and other low-power devices.
• Input Voltage Range: The device can handle an input voltage range from 11V to 35V, providing flexibility in the choice of power sources.
• Thermal Overload Protection: The regulator includes safety features that shut down the output if the temperature exceeds a certain threshold, preventing damage to the device and the circuit it is powering.
• Short Circuit Protection: In the event of a short circuit, the L78L09ACU automatically limits the current to a safe level to protect both the regulator and the connected components.
• Package Type: The device is available in a TO-92 package, which is a small, through-hole mounting package that is easy to handle and integrate into a wide range of electronic circuits.

Applications

The L78L09ACU voltage regulator is versatile and can be used in various electronic applications, including:

• Battery-powered devices
• Small power supplies
• Home appliances
• DIY electronics projects
• Consumer electronics

With its combination of features, the L78L09ACU from STMicroelectronics provides a reliable and straightforward solution for maintaining a stable 9V supply in a compact and cost-effective package.