LT1117CST-5#PBF

The LT1117CST-5#PBF is a low dropout (LDO) voltage regulator manufactured by Analog Devices Inc., previously known as Maxim Integrated. This component is designed to provide a stable output voltage with minimal input-output voltage differential, making it suitable for applications where space and efficiency are critical.

Key Features:

1. Output Voltage: The LT1117CST-5#PBF provides a fixed output voltage of 5V, which is ideal for powering various digital circuits and devices that require a stable supply.

2. Low Dropout Voltage: The device features a low dropout voltage of approximately 1.2V at full load, allowing it to maintain regulation even when the input voltage is close to the output voltage. This characteristic is particularly beneficial in battery-powered applications where maximizing battery life is essential.

3. Current Output: The regulator can deliver up to 800mA of output current, making it suitable for a wide range of applications, from powering microcontrollers to driving sensors and other peripherals.

4. Thermal Performance: The LT1117CST-5#PBF is designed with thermal performance in mind, featuring a thermal shutdown mechanism that protects the device from overheating. This ensures reliability and longevity in various operating conditions.

5. Package Type: The component comes in a compact SOT-223 package, which is surface-mountable. This small form factor is advantageous for space-constrained designs, allowing for efficient PCB layout and integration into various electronic devices.

6. Input Voltage Range: The device operates over a wide input voltage range, typically from 4.75V to 15V, providing flexibility in design and compatibility with various power sources.

7. Noise Performance: The LT1117CST-5#PBF features low output noise, which is critical for sensitive applications such as RF circuits and precision analog devices. This helps maintain signal integrity and performance.

8. Protection Features: In addition to thermal shutdown, the regulator includes current limiting to prevent damage under fault conditions, enhancing the overall robustness of the design.

Applications:

The LT1117CST-5#PBF is suitable for a variety of applications, including:

• Powering microcontrollers and digital signal processors (DSPs)
• Supplying power to sensors and actuators in automotive and industrial applications
• Providing regulated voltage in battery-operated devices
• Serving as a power supply for communication equipment and consumer electronics

Conclusion:

Overall, the LT1117CST-5#PBF from Analog Devices Inc./Maxim Integrated is a versatile and reliable low dropout voltage regulator that combines high performance with a compact design. Its features make it an excellent choice for engineers looking to implement efficient power management solutions in their electronic designs.