STMicroelectronics

LD1117V25

LD1117V25 Description

The LD1117V25 is a fixed output linear regulator designed to provide a stable 2.5V output voltage with a maximum output current of 800mA. Manufactured by STMicroelectronics, this regulator is part of the Power Management Integrated Circuit (PMIC) category and is housed in a TO220AB package, suitable for through-hole mounting. The LD1117V25 features a maximum input voltage of 15V and a dropout voltage of 1.2V at 800mA, ensuring efficient operation even under varying input conditions. With a quiescent current of 10mA and a Power Supply Rejection Ratio (PSRR) of 75dB at 120Hz, the LD1117V25 offers high performance in noise reduction and stability. The device operates within a temperature range of 0°C to 125°C and includes over-current and over-temperature protection features, enhancing its reliability and safety. Despite being marked as obsolete, the LD1117V25 remains unaffected by REACH regulations and is classified under ECCN EAR99 and HTSUS 8542.39.0001. Its moisture sensitivity level is MSL 1, indicating unlimited exposure to moisture, making it suitable for a wide range of applications.

LD1117V25 Features

• Fixed Output Voltage: Provides a stable 2.5V output, ensuring consistent power supply to connected devices.
• High Output Current: Capable of delivering up to 800mA, making it suitable for applications requiring moderate to high current loads.
• Low Dropout Voltage: A maximum dropout voltage of 1.2V at 800mA allows the regulator to maintain efficiency even with low input-to-output voltage differences.
• Over-Current and Over-Temperature Protection: Built-in protection features safeguard the device and connected circuits from damage due to over-current and over-temperature conditions.
• Wide Operating Temperature Range: Functions reliably within a temperature range of 0°C to 125°C, making it suitable for both industrial and consumer applications.
• High PSRR: A Power Supply Rejection Ratio of 75dB at 120Hz ensures minimal noise and ripple on the output voltage, contributing to the stability and performance of the powered devices.
• Through-Hole Mounting: The TO220AB package is designed for through-hole mounting, providing robust mechanical stability and ease of integration into various circuit boards.

LD1117V25 Applications

The LD1117V25 is ideal for a variety of applications where a stable and reliable power supply is required. Some specific use cases include:

• Consumer Electronics: Powering devices such as smartphones, tablets, and portable gaming consoles that require a stable 2.5V supply.
• Industrial Equipment: Providing regulated power to sensors, actuators, and control systems in industrial environments.
• Telecommunications: Supplying power to communication modules and base stations that need a reliable and efficient power source.
• Automotive Electronics: Used in automotive applications where a stable voltage supply is crucial for the operation of electronic control units (ECUs) and other automotive electronics.
• Medical Devices: Ensuring stable power supply to medical equipment such as diagnostic tools and monitoring devices, where reliability and precision are paramount.

Conclusion of LD1117V25

The LD1117V25 is a versatile and reliable linear regulator that offers a stable 2.5V output with a maximum current of 800mA. Its low dropout voltage, high PSRR, and built-in protection features make it an excellent choice for a wide range of applications, from consumer electronics to industrial and automotive systems. Despite being marked as obsolete, the LD1117V25 remains unaffected by REACH regulations and continues to provide high performance and reliability. Its through-hole mounting and wide operating temperature range further enhance its suitability for various applications, making it a valuable component in the electronics industry.