The LM1117-1.8 is a low dropout (LDO) voltage regulator produced by Cystech Electronics Corp. It's designed to provide a stable 1.8V output voltage from a higher input voltage, even when the input voltage is close to the output voltage. LDO regulators are essential in many electronic devices for providing clean and stable power to sensitive components.

Applications

• Post regulators for switching power supplies
• Battery chargers
• Microcontroller power supplies
• Portable electronics
• Hard disk drives
• Wireless devices

Features

• Low dropout voltage (typically 1.1V at 800mA)
• Output current of 800mA
• Fixed output voltage of 1.8V
• Thermal shutdown protection
• Current limiting protection
• Available in SOT-223 and TO-252 packages
• Stable with low ESR ceramic capacitors

Benefits

• Provides a stable and accurate 1.8V output voltage, ensuring reliable operation of downstream components.
• Low dropout voltage allows for efficient operation even with low input voltages, extending battery life in portable applications.
• Thermal shutdown and current limiting protect the regulator and downstream components from damage due to overtemperature or overcurrent conditions.
• Stable with ceramic capacitors, which are smaller and more cost-effective than other types of capacitors.
• Simple to use, requiring only a few external components.
• Reduces noise and ripple compared to direct connection to a power source.

Additional Details

The LM1117-1.8 requires a minimum input voltage slightly above 1.8V to operate correctly. Input and output capacitors are recommended for stability. The datasheet provides detailed information on recommended capacitor values and other design considerations. It's crucial to observe thermal considerations based on the package being used.