STMicroelectronics

LF80CPT-TR

LF80CPT-TR Description

The LF80CPT-TR is a linear voltage regulator designed by STMicroelectronics, offering a fixed output voltage of 8V and a maximum output current of 500mA. This regulator is housed in a PPAK package, making it suitable for surface mount applications. Despite its obsolescence, the LF80CPT-TR remains a reliable choice for applications requiring a stable power supply with minimal voltage dropout and robust protection features.

LF80CPT-TR Features

• Fixed Output Voltage: The LF80CPT-TR provides a stable 8V output, ensuring consistent power delivery to connected devices.
• Low Dropout Voltage: With a maximum dropout voltage of 0.7V at 500mA, this regulator efficiently maintains output voltage even when the input voltage is close to the output voltage.
• High PSRR: The regulator boasts a power supply rejection ratio (PSRR) of 72dB to 57dB across a frequency range of 120Hz to 10kHz, effectively filtering out noise from the input supply.
• Low Quiescent Current: Consuming only 1.5mA in quiescent mode, the LF80CPT-TR minimizes power loss during idle periods.
• Protection Features: Over-current and over-temperature protection ensure the regulator operates safely under various conditions, safeguarding both the regulator and connected circuits.
• Enable Control Feature: The enable feature allows for dynamic control of the regulator's operation, enhancing flexibility in power management.
• Compliance and Packaging: The LF80CPT-TR is REACH unaffected, RoHS3 compliant, and available in a tape & reel (TR) package, ensuring it meets environmental and manufacturing standards.

LF80CPT-TR Applications

The LF80CPT-TR is ideal for a variety of applications where a stable and efficient power supply is crucial. Its low dropout voltage and high PSRR make it particularly suitable for battery-powered devices and systems where input voltage fluctuations are common. The regulator's robust protection features and low quiescent current also make it a reliable choice for applications requiring high reliability and minimal power consumption. Specific use cases include:

• Battery-Powered Devices: The low dropout voltage ensures efficient operation even as the battery voltage drops.
• Portable Electronics: The regulator's small form factor and surface design mount make it ideal for compact, portable devices.
• Industrial Control Systems: The high PSRR and protection features ensure stable and reliable power supply in demanding industrial environments.

Conclusion of LF80CPT-TR

The LF80CPT-TR, despite being obsolete, remains a valuable component for applications requiring a stable 8V output and efficient power management. Its low dropout voltage, high PSRR, and robust protection features set it apart from similar models, making it a reliable choice for a variety of applications. While newer alternatives may offer additional features, the LF80CPT-TR continues to provide a proven solution for stable power delivery in environments demanding.