Supply original LD1117S50CTR, PMIC - Voltage Regulators - Linear, by STMicroelectronics

The LD1117S50CTR is a low-dropout (LDO) voltage regulator manufactured by STMicroelectronics. It is designed to provide a stable output voltage of 5.0V with a maximum output current of 800mA. This device is particularly useful in applications where a reliable power supply is required, such as in microcontrollers, sensors, and other electronic devices.

Key Features:

1. Output Voltage: The LD1117S50CTR provides a fixed output voltage of 5.0V, making it suitable for powering various digital circuits and components that require a stable voltage supply.

2. Current Rating: It can deliver up to 800mA of output current, which is sufficient for many low to medium power applications.

3. Low Dropout Voltage: The LDO has a low dropout voltage of around 1.2V at full load, which means it can maintain regulation even when the input voltage is only slightly higher than the output voltage. This feature is particularly beneficial in battery-powered applications where maximizing battery life is crucial.

4. Thermal Protection: The LD1117S50CTR includes built-in thermal shutdown protection, which prevents the device from overheating and ensures safe operation under high load conditions.

5. Short-Circuit Protection: It also features short-circuit protection, which helps to safeguard the device and the connected load in the event of a fault condition.

6. Package Type: The device is available in a TO-220 package, which provides good thermal performance and allows for easy heat dissipation. This package is suitable for applications where space is not a critical constraint.

7. Operating Temperature Range: The LD1117S50CTR operates over a wide temperature range, typically from -40°C to +125°C, making it suitable for industrial and automotive applications.

8. Input Voltage Range: The input voltage range for the LD1117S50CTR is typically from 6V to 15V, allowing it to be used with various power supply sources.

9. Capacitor Requirements: The device requires a minimum output capacitor for stability, typically around 10µF, which helps to filter out noise and improve transient response.

Applications:

The LD1117S50CTR is widely used in various applications, including:

• Power supply circuits for microcontrollers and digital signal processors.
• Battery-powered devices where low dropout and efficiency are essential.
• Automotive electronics requiring robust voltage regulation.
• Consumer electronics, such as audio equipment and portable devices.

Conclusion:

Overall, the LD1117S50CTR from STMicroelectronics is a versatile and reliable LDO voltage regulator that provides a stable 5.0V output with a good balance of performance features, making it an excellent choice for a wide range of electronic applications. Its combination of low dropout voltage, thermal protection, and ease of use makes it a popular choice among engineers and designers.