The LD1117AG-1.2 is a low dropout (LDO) positive voltage regulator manufactured by UTC (Unisonic Technologies Co., Ltd.). It provides a fixed output voltage of 1.2V with a low dropout voltage, making it suitable for applications where the input voltage is close to the desired output voltage. The regulator is designed to deliver a stable and regulated voltage to various electronic components.

Applications

• Microcontroller Power Supply: Providing a stable 1.2V supply for microcontrollers and other digital logic circuits.
• Post Regulation: Regulating the output voltage of switching power supplies.
• Battery-Powered Devices: Ensuring a consistent voltage supply in portable devices.
• Linear Regulation for Sensitive Circuits: Supplying power to analog and RF circuits requiring low noise and stable voltage.
• Power Management in Embedded Systems: Regulating voltage levels for various components within an embedded system.

Features

• Fixed Output Voltage: Provides a precise and stable 1.2V output.
• Low Dropout Voltage: Operates with a small difference between input and output voltage.
• Output Current: Capable of delivering up to 800mA of output current.
• Thermal Overload Protection: Protects the regulator from damage due to excessive heat.
• Short Circuit Protection: Shuts down the regulator in the event of a short circuit.

Benefits

• Stable Voltage Supply: Ensures reliable operation of electronic components.
• Efficient Regulation: Low dropout voltage minimizes power loss and improves efficiency.
• Overload Protection: Protects the regulator and connected components from damage.
• Compact Size: Available in small surface-mount packages, saving board space.
• Easy to Use: Requires minimal external components for operation.

Additional Details

The LD1117AG-1.2 is commonly used in applications where a stable and regulated 1.2V supply is needed. Its low dropout voltage makes it particularly suitable for battery-powered devices and applications where the input voltage is close to the output voltage. The thermal overload and short circuit protection features enhance the reliability and robustness of the regulator.

Technical Specifications:

• Output Voltage: 1.2V
• Output Current: 800mA
• Dropout Voltage: Typically 1.1V at 800mA
• Operating Temperature Range: -40°C to +125°C
• Package: SOT-223