Texas Instruments

LM1117LD-2.5

LM1117LD-2.5 Description

The LM1117LD-2.5 is a fixed-output linear regulator designed for high performance and reliability in power management applications. Manufactured by Texas Instruments, this regulator is part of the LM1117 family and offers a stable voltage output of 2.5V with a maximum output current of 800mA. It is designed to operate within an input voltage range up to 15V, ensuring compatibility with a wide range of power sources. The regulator features a low dropout voltage of 1.2V at 800mA, which enhances efficiency and allows for a higher input-to-output voltage difference. The LM1117LD-2.5 is housed in an 8-pin WSON package, which is suitable for surface-mount applications and provides a compact solution for space-constrained designs. Despite its small form factor, the regulator includes essential protection features such as over-current and over-temperature protection, ensuring robustness and reliability in various operating conditions. The device operates within a temperature range of 0°C to 125°C, making it suitable for industrial and automotive applications. Although the LM1117LD-2.5 is now obsolete, it remains a viable option for legacy systems and specific applications where its unique features are required.

LM1117LD-2.5 Features

• Fixed Output Voltage: The LM1117LD-2.5 provides a stable output voltage of 2.5V, ensuring consistent power delivery to sensitive electronic components.
• High Output Current: Capable of delivering up to 800mA, this regulator is suitable for applications requiring moderate to high current loads.
• Low Dropout Voltage: With a dropout voltage of 1.2V at 800mA, the regulator maintains high efficiency even under low input-to-output voltage differences.
• Over-Current and Over-Temperature Protection: These protection features safeguard the regulator and connected components from damage due to excessive current or temperature.
• Compact Surface-Mount Package: The 8-pin WSON package is ideal for surface-mount technology (SMT) and fits well in space-limited designs.
• Wide Operating Temperature Range: The regulator operates reliably from 0°C to 125°C, making it suitable for a variety of environments, including industrial and automotive applications.
• Low Quiescent Current: A quiescent current of 5mA ensures minimal power consumption during operation, enhancing overall system efficiency.
• High Power Supply Rejection Ratio (PSRR): With a PSRR of 75dB at 120Hz, the regulator effectively filters out noise from the power supply, ensuring clean power delivery to sensitive circuits.

LM1117LD-2.5 Applications

The LM1117LD-2.5 is well-suited for a variety of applications where a stable, low-noise power supply is required. Some specific use cases include:

• Embedded Systems: Providing stable power to microcontrollers, sensors, and low other-power devices in embedded systems.
• Telecommunications: Supplying power to RF modules, base stations, and other communication equipment where low noise and high efficiency are critical.
• Automotive Electronics: Suitable for automotive applications due to its wide operating temperature range and robust protection features.
• Industrial Control Systems: Ideal for powering control boards, PLCs, and other industrial equipment that require reliable and stable power.
• Consumer Electronics: Used in devices such as smartphones, tablets, portable and gaming consoles to provide clean power to sensitive components.

Conclusion of LM1117LD-2.5

The LM1117LD-2.5 is a versatile and reliable linear regulator that offers a stable 2.5V output with a maximum current of 800mA. Its low dropout voltage, compact surface-mount package, and robust protection features make it an excellent choice for a wide range of applications, from embedded systems to automotive electronics. Despite being obsolete the, LM1117LD-2.5 remains a valuable component for legacy systems and specific applications where its unique features are essential. For designers seeking a high-performance, low-noise power solution, the LM1117LD-2.5 is a proven and reliable option.