STMicroelectronics

LD1117V50C

LD1117V50C Description

The LD1117V50C is a linear voltage regulator IC from STMicroelectronics, designed to provide a fixed 5V output with a maximum current of 800mA. It features a low dropout voltage of 1.3V at 800mA, ensuring stable operation even with low input voltages. The device is housed in a through-hole TO220 package, making it suitable for various applications requiring a compact and efficient voltage regulator.

LD1117V50C Features

• Fixed Output Voltage: The LD1117V50C provides a fixed 5V output, simplifying power supply design.
• Low Dropout Voltage: With a dropout voltage of 1.3V at 800mA, the device maintains stable operation with low input voltages.
• High PSRR: The LD1117V50C offers a high power supply rejection ratio (PSRR) of 75dB at 120Hz, minimizing noise coupling from the input to the output.
• Protection Features: The device includes over-current and over-temperature protection, ensuring reliable operation and preventing damage in case of faults.
• RoHS Compliance: The LD1117V50C is compliant with the RoHS3 directive, making it suitable for environmentally friendly applications.
• Moisture Sensitivity Level 1: The device has a moisture sensitivity level of 1, allowing for unlimited storage time in a dry environment.

LD1117V50C Applications

The LD1117V50C is ideal for applications requiring a stable 5V supply with low dropout voltage and high PSRR. Some specific use cases include:

1. Portable Electronics: The LD1117V50C can be used in battery-powered devices, such as smartphones and tablets, to provide a stable power supply.
2. Industrial Control Systems: The device can be used in industrial control systems to provide a stable power supply for microcontrollers and other sensitive components.
3. Telecommunications Equipment: The LD1117V50C can be used in telecommunications equipment to provide a stable power supply for signal processing and control circuits.

Conclusion of LD1117V50C

The LD1117V50C is a reliable and efficient linear voltage regulator, offering a fixed 5V output with low dropout voltage and high PSRR. Its RoHS compliance, moisture sensitivity level 1, and protection features make it suitable for a wide range of applications, including portable electronics, industrial control systems, and telecommunications equipment. While the device is currently marked as obsolete, it remains a popular choice for its unique features and advantages over similar models.