The LM1117MDT-3.3/TR is a low-dropout (LDO) linear regulator that provides a fixed 3.3V output voltage with a maximum output current of 800mA. Manufactured by HGSEMI, this regulator is designed for applications requiring a stable and efficient 3.3V supply. The '/TR' suffix typically indicates that the device is supplied in tape and reel packaging for automated assembly. The 'MDT' indicates the package type, likely a SOT-223 package.

Applications:

• Microcontroller Power Supply: Provides a stable 3.3V supply for microcontrollers.
• FPGA Power Supply: Suitable for powering FPGAs requiring a 3.3V rail.
• Post Regulation for Switching Supplies: Used to provide a clean and stable 3.3V source after a switching regulator.
• Battery-Powered Devices: Ideal for use in battery-powered devices due to its low dropout voltage.
• USB Power Supply: Often used to derive 3.3V from a 5V USB supply.

Features:

• Fixed 3.3V Output Voltage: Provides a stable 3.3V output without the need for external resistors.
• 800mA Output Current: Provides sufficient current for a wide range of applications.
• Low Dropout Voltage: Operates with a low difference between input and output voltage, maximizing efficiency.
• Current Limiting: Protects the regulator and load from overcurrent conditions.
• Thermal Shutdown: Shuts down the regulator in case of excessive temperature.
• SOT-223 Package: Surface-mount package for efficient PCB assembly.

Benefits:

• Stable Voltage Supply: Provides a stable and reliable 3.3V source.
• Ease of Use: Simple to implement with minimal external components.
• Protection: Built-in protection features prevent damage to the regulator and load.
• Efficiency: Low dropout voltage maximizes efficiency, especially in battery-powered applications.
• Automated Assembly: Tape and reel packaging facilitates automated assembly.

Technical Specifications:

The LM1117MDT-3.3/TR operates with an input voltage range typically up to 15V, but this can vary based on specific manufacturer specs. The output voltage is fixed at 3.3V. The device features a low dropout voltage, typically around 1.1V at 800mA. It includes internal current limiting and thermal shutdown protection. Consult the datasheet for precise specifications and application guidelines.