STMicroelectronics

L78L09CD13TR

L78L09CD13TR Description

The L78L09CD13TR is a linear voltage regulator designed and manufactured by STMicroelectronics. It is categorized under Linear & Switching Voltage Regulators and is known for its fixed output type and positive output configuration. This device is specifically designed to provide a stable 9V output with a maximum current of 100mA. Despite being classified as obsolete, it remains REACH unaffected and complies with the RoHS3 directive, making it suitable for environmentally conscious applications.

L78L09CD13TR Features

• Voltage Regulation: The L78L09CD13TR offers a fixed output voltage of 9V, ensuring consistent power supply to connected devices.
• Input Voltage Range: It can handle input voltages up to 30V, providing flexibility in various power supply scenarios.
• Output Current: Capable of delivering a continuous 100mA output current, making it suitable for low to medium power requirements.
• Efficiency and Power Consumption: With a maximum supply current of 6 mA and a quiescent current of 5.5 mA, it is energy-efficient.
• Protection Features: It includes over current, over temperature, and short circuit protection, enhancing the reliability and safety of the system.
• PSRR and Noise Performance: The 44dB PSRR at 120Hz ensures minimal noise interference, crucial for sensitive applications.
• Temperature Range: It operates within a wide temperature range of 0°C to 125°C, making it suitable for both indoor and outdoor applications.
• Moisture Sensitivity Level: With an MSL of 1, it is suitable for environments with unlimited reflow cycles.
• Mounting Type: Surface Mount technology allows for compact and efficient PCB design.

L78L09CD13TR Applications

The L78L09CD13TR is ideal for applications requiring a stable and reliable 9V power supply with low to medium current demands. Some specific use cases include:

• Portable Electronics: Powering low-power circuits in portable devices such as digital cameras, remote controls, and small handheld gadgets.
• Industrial Control Systems: Providing stable power to microcontrollers and sensors in industrial control panels and automation systems.
• Telecommunications: Used in base stations and other communication equipment where a stable 9V supply is necessary.

Conclusion of L78L09CD13TR

While the L78L09CD13TR is now considered obsolete, it remains a reliable choice for applications that can benefit from its fixed 9V output and robust protection features. Its compliance with environmental regulations and ability to operate in a wide temperature range make it a suitable option for legacy systems and applications where a stable and efficient power supply is crucial. Despite being from an older generation of voltage regulators, its performance benefits and unique features continue to make it a viable option in specific applications.