LD1117 Voltage Regulator by STMicroelectronics

The LD1117 from STMicroelectronics is a robust and reliable low drop voltage regulator capable of delivering up to 800mA of output current. Designed to provide a variety of fixed and adjustable output voltages, it is a versatile component suitable for a wide range of applications. This linear voltage regulator is particularly well-suited for battery-powered devices, consumer electronics, and personal computers, providing a stable and precise voltage supply.

Key Features

• Low Dropout Performance: The LD1117 offers a low dropout performance, which ensures efficiency by minimizing the difference between the input and output voltage, allowing the regulator to operate effectively even when the supply voltage is very close to the output voltage.
• Adjustable and Fixed Output: It comes in both adjustable and fixed versions, with fixed output voltages of 1.8V, 2.5V, 3.3V, and 5V, as well as an adjustable variant that can be set to a desired voltage using external resistors.
• Current and Thermal Limiting: The device includes internal current limiting and thermal shutdown features, which protect the regulator and the application circuit from damage due to overcurrent and overheating conditions.
• Wide Range of Applications: It is suitable for various applications including on-card regulation for elimination of noise and distribution problems associated with single-point regulation.

Applications

The LD1117 is a versatile component used in a variety of applications, such as:

• Consumer Electronics
• Portable and Battery-powered Equipment
• Personal Computers and Laptops
• Adjustable Power Supplies
• Embedded Systems

Package Options and Part Numbers

STMicroelectronics offers the LD1117 in several package options, including TO-220, TO-252 (DPAK), and SO-8. This variety of packages allows for flexibility in design and ensures compatibility with different mounting and space requirements. The product is also available in different part numbers depending on the output voltage option and package type.

For detailed specifications, application notes, and additional resources, designers and engineers are encouraged to consult the official STMicroelectronics datasheets and product guides for the LD1117 series.