The LD1117AG-5.0V-A is a low dropout (LDO) linear voltage regulator manufactured by UTC (Unisonic Technologies Co., Ltd.). It is designed to provide a fixed 5.0V output voltage with a low dropout voltage, meaning it can maintain regulation even when the input voltage is only slightly higher than the output voltage. This makes it an efficient choice for a variety of battery-powered and portable applications.

Applications

• Battery-powered systems
• Post-regulation for switching power supplies
• Microprocessor power supplies
• Voltage regulation in consumer electronics
• Linear regulators for various electronic circuits

Features

• Fixed 5.0V Output Voltage: Provides a stable and accurate 5.0V output.
• Low Dropout Voltage: Operates with a minimal difference between input and output voltage.
• Over-Temperature Protection: Protects the regulator from overheating and potential damage.
• Current Limiting: Limits the output current to prevent overloading and short circuits.
• TO-220 Package: Allows for easy heat sinking and thermal management.

Benefits

• Stable and Accurate Voltage: Provides a reliable 5.0V output for sensitive electronic circuits.
• Efficient Power Conversion: Low dropout voltage minimizes power loss and heat generation.
• Enhanced System Reliability: Over-temperature and current limiting protection features prevent damage and ensure robust operation.
• Easy Integration: Standard TO-220 package simplifies mounting and heat sinking.
• Cost-Effective Solution: Provides a reliable and affordable voltage regulation option.

Additional Details

The LD1117AG-5.0V-A requires only a few external components for proper operation, typically input and output capacitors to improve stability and transient response. The dropout voltage is typically specified at a given output current, and it's important to ensure that the input voltage remains above the minimum required level for proper regulation. The datasheet from UTC provides detailed information on electrical characteristics, thermal performance, and application guidelines. The regulator is designed for general-purpose voltage regulation and is suitable for a wide range of electronic devices. It is commonly used in applications where a stable 5.0V supply is needed from a slightly higher input voltage source.