STMicroelectronics

LD1117F33C

LD1117F33C Description

The LD1117F33C is a fixed output linear voltage regulator designed by STMicroelectronics, offering a stable 3.3V output voltage with a maximum input voltage of 15V. This regulator is capable of delivering up to 800mA of output current, making it suitable for a variety of applications requiring a reliable power supply. The LD1117F33C features a dropout voltage of 1.3V at 800mA, ensuring efficient operation even at lower input-to-output voltage differentials. It is housed in a through-hole TO220AB package, which provides robust mechanical stability and thermal performance.

LD1117F33C Features

• Output Type: Fixed 3.3V output voltage, ideal for applications requiring a stable power supply.
• Input Voltage Range: Supports a maximum input voltage of 15V, providing flexibility in power source selection.
• Output Current: Capable of delivering up to 800mA, suitable for driving moderate to high current loads.
• Dropout Voltage: Low dropout voltage of 1.3V at 800mA, enhancing efficiency and reducing power dissipation.
• Protection Features: Includes over-current and over-temperature protection, ensuring reliable operation under various conditions.
• Mounting Type: Through-hole mounting in a TO220AB package, offering excellent thermal performance and mechanical stability.
• Regulator Count: Single regulator design, simplifying circuit design and reducing component count.
• Output Configuration: Positive output configuration, compatible with a wide range of electronic systems.
• Quiescent Current: Low quiescent current of 10mA, minimizing power consumption during standby.
• PSRR: High power supply rejection ratio (PSRR) of 75dB at 120Hz, ensuring clean output voltage.
• Compliance: ROHS3 compliant and REACH unaffected, meeting environmental and regulatory standards.
• Moisture Sensitivity Level: MSL 1 (Unlimited), suitable for storage and handling in various environments.

LD1117F33C Applications

The LD1117F33C is well-suited for a range of applications where a stable and efficient power supply is required. Its fixed 3.3V output makes it ideal for powering microcontrollers, digital logic circuits, and other low-voltage electronics. The regulator's ability to handle up to 800mA of current allows it to drive moderate to high current loads, such as sensors, actuators, and communication modules. Its low dropout voltage and high PSRR make it particularly useful in applications where input voltage fluctuations are common, ensuring stable and clean power delivery. The through-hole TO220AB package provides robust mechanical and thermal performance, making it suitable for industrial and automotive environments.

Conclusion of LD1117F33C

The LD1117F33C is a reliable and efficient linear voltage regulator designed for applications requiring a stable 3.3V power supply. Its low dropout voltage, high PSRR, and robust protection features make it a superior choice over similar models. The through-hole TO220AB package ensures mechanical stability and thermal performance, making it suitable for demanding environments. While the product is marked as obsolete, its technical specifications and performance benefits continue to make it a viable option for existing designs and applications.