LD1117S33CTR

The LD1117S33CTR is a low-dropout (LDO) voltage regulator manufactured by STMicroelectronics. It is designed to provide a stable output voltage of 3.3V with a maximum output current of 800mA. This device is particularly useful in applications where space is limited and efficiency is crucial, such as in portable electronics, microcontroller power supplies, and other battery-operated devices.

Key Features:

1. Output Voltage: The LD1117S33CTR provides a fixed output voltage of 3.3V, making it suitable for powering various digital circuits and components that require this specific voltage level.

2. Dropout Voltage: The LDO features a low dropout voltage, typically around 1.2V at full load, which allows it to maintain regulation even when the input voltage is only slightly above the output voltage. This characteristic is essential for battery-powered applications where maximizing battery life is important.

3. Current Capability: With a maximum output current of 800mA, the LD1117S33CTR can support a wide range of applications, from low-power devices to more demanding circuits.

4. Thermal Protection: The device includes built-in thermal shutdown protection, which prevents damage due to overheating. This feature is crucial for maintaining reliability in various operating conditions.

5. Short-Circuit Protection: The LD1117S33CTR is equipped with short-circuit protection, ensuring that the device can withstand fault conditions without sustaining damage.

6. Package Type: The LD1117S33CTR is available in a compact TO-220 package, which facilitates easy mounting on PCBs and helps in heat dissipation. This package type is advantageous for applications where space is at a premium.

7. Operating Temperature Range: The device 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 LD1117S33CTR can accept input voltages ranging from 4.75V to 15V, providing flexibility in design and allowing it to be used with various power sources.

9. Low Quiescent Current: The LDO features low quiescent current, which is beneficial for battery-operated devices, as it helps to extend battery life by minimizing power consumption when the device is idle.

Applications:

The LD1117S33CTR is widely used in various applications, including:

• Power supplies for microcontrollers and digital circuits
• Battery-powered devices
• Telecommunications equipment
• Automotive electronics
• Consumer electronics

Conclusion:

The LD1117S33CTR from STMicroelectronics is a versatile and reliable LDO voltage regulator that provides a stable 3.3V output with a maximum current of 800mA. Its low dropout voltage, thermal and short-circuit protection, and compact package make it an excellent choice for a wide range of electronic applications, particularly in environments where space and efficiency are critical.