The LD1117L-5.0 is a low dropout (LDO) positive voltage regulator from UTC (Unisonic Technologies Co., Ltd.). It provides a fixed 5.0V output voltage and is designed for applications where a stable and regulated voltage supply is needed, even when the input voltage is close to the output voltage.

Applications

• Post regulation for switching power supplies.
• Battery chargers.
• Power management in portable devices.
• Microprocessor power supply.
• Logic power supply.

Features

• Low Dropout Voltage: Maintains regulation with a small difference between input and output voltages.
• Fixed Output Voltage: Delivers a stable 5.0V output.
• Over Temperature Protection: Prevents damage from overheating.
• Short Circuit Protection: Protects the regulator and connected circuits from short circuits.
• Thermal Shutdown Function: Disables the regulator when the junction temperature exceeds a safe threshold.
• Current Limiting: Limits the output current to prevent overloads.

Benefits

• Stable 5.0V Output: Provides a reliable voltage supply for sensitive components.
• High Efficiency: Low dropout design minimizes power loss.
• Enhanced Reliability: Protection features prevent damage and ensure stable operation.
• Simplified Design: Requires few external components, simplifying circuit design.
• Compact Size: Available in various packages for space-constrained applications.

Additional Details

The LD1117L-5.0 is commonly available in SOT-223, TO-252, and TO-220 packages. Input and output capacitors are needed for stable operation, with specific values outlined in the datasheet. The datasheet contains crucial information regarding electrical characteristics, application circuits, and thermal considerations. Proper heatsinking may be required depending on the load current and ambient temperature.