STMicroelectronics

LDF25PT-TR  

Linear & Switching Voltage Regulators

LDF25PT-TR Description

The LDF25PT-TR is a linear regulator IC designed by STMicroelectronics, offering a fixed output voltage of 2.5V and a maximum output current of 1A. This device is housed in a PPAK package, making it suitable for surface-mount applications. Despite being marked as obsolete, the LDF25PT-TR remains a reliable choice for power management in various electronic systems. It features a maximum input voltage of 16V and a dropout voltage of only 0.5V at full load, ensuring efficient power conversion even under varying input conditions. The regulator also includes essential protection features such as over-current, over-temperature, and under-voltage lockout (UVLO), enhancing its robustness and reliability.

LDF25PT-TR Features

• Output Configuration: Fixed 2.5V output voltage, ideal for applications requiring a stable and precise power supply.
• Efficiency: A low dropout voltage of 0.5V at 1A ensures high efficiency, making it suitable for battery-powered devices where input voltage may vary.
• Protection Features: Over-current, over-temperature, and under-voltage lockout (UVLO) protect the device and connected circuits from damage.
• Control Features: Enable and Power Good signals provide additional control and monitoring capabilities.
• Low Quiescent Current: 800 µA ensures minimal power consumption during operation, extending battery life in portable applications.
• Noise Performance: A PSRR of 60dB to 45dB across a frequency range of 120Hz to 100kHz ensures low noise and high performance in sensitive applications.
• Packaging: The PPAK package is suitable for surface-mount technology (SMT), facilitating automated assembly processes.
• Moisture Sensitivity Level: MSL 1 (Unlimited) indicates the device is suitable for storage and handling without special moisture protection.

LDF25PT-TR Applications

The LDF25PT-TR is well-suited for a variety of applications where a stable and efficient power supply is required. Its fixed 2.5V output and 1A current capability make it ideal for powering microcontrollers, sensors, and other low-power electronics. The low dropout voltage and high PSRR make it particularly useful in battery-powered devices where input voltage can fluctuate. The inclusion of enable and power good signals allows for precise control and monitoring, making it suitable for applications requiring high reliability and performance. Specific use cases include:

• Battery-Powered Devices: Ideal for portable electronics where input voltage may vary.
• Microcontroller Power Supplies: Provides a stable power source for low-power microcontrollers and embedded systems.
• Sensor Applications: Ensures reliable power for sensitive sensors requiring low noise and high precision.
• Industrial Control Systems: Suitable for applications requiring robust protection features and high reliability.

Conclusion of LDF25PT-TR

The LDF25PT-TR is a versatile linear regulator IC from STMicroelectronics, offering a fixed 2.5V output and 1A current capability in a compact PPAK package. Despite its obsolete status, it remains a reliable choice for power management in various electronic systems. Its low dropout voltage, high PSRR, and comprehensive protection features make it an excellent choice for battery-powered devices, microcontroller power supplies, and sensitive sensor applications. The inclusion of enable and power good signals further enhances its suitability for applications requiring precise control and monitoring.

LDF25PT-TR Documents

Download datasheets and manufacturer documentation for LDF25PT-TR

Datasheets :

LDF      

PCN Obsolescence/ EOL :

Mult Dev OBS 03/Aug/2021      

HTML Datasheet :

LDF