The LR1116G-25-AA3-D-R is a low dropout (LDO) linear regulator manufactured by UTC (Unisonic Technologies Co., Ltd.). It is designed to provide a stable and regulated output voltage from a higher input voltage. This particular model outputs a fixed 2.5V and is capable of supplying a continuous current of up to 1A. The 'D' in the part number suggests a specific package type, usually a DPAK or similar, suitable for surface mounting and efficient heat dissipation. The 'R' at the end usually indicates tape and reel packaging for automated assembly processes.

Applications

• Power management in portable devices: Such as smartphones, tablets, and wearables, where a stable 2.5V supply is needed for various components.
• Post-regulation for switching power supplies: To reduce ripple and noise in sensitive applications.
• Microcontroller and microprocessor power: Providing a clean and stable voltage source for digital circuits.
• Battery-powered equipment: Extending battery life by efficiently regulating the voltage.
• Industrial control systems: Providing a reliable 2.5V supply for sensors, actuators, and other control elements.

Features

• Low Dropout Voltage: Ensures regulation even with a small difference between input and output voltage, maximizing efficiency.
• Fixed 2.5V Output: Provides a precise and stable voltage supply without the need for external components for adjustment.
• 1A Output Current Capability: Suitable for powering a variety of loads.
• Over-Temperature Protection: Protects the regulator from thermal damage by shutting down the output when the junction temperature exceeds a safe limit.
• Short-Circuit Protection: Prevents damage to the regulator and the load in the event of a short circuit.
• Current Limiting: Limits the output current to a safe level, protecting the regulator and the load.
• Reverse Polarity Protection: Prevents damage if the input voltage is accidentally connected with the wrong polarity. (Check datasheet for specifics)

Benefits

• Improved System Reliability: Stable voltage regulation ensures consistent performance of connected devices.
• Increased Battery Life: High efficiency minimizes power loss and extends the operating time of battery-powered devices.
• Simplified Design: Fixed output voltage simplifies circuit design and reduces the number of external components required.
• Enhanced Protection: Over-temperature, short-circuit, and current limiting features protect the regulator and the load from damage.
• Compact Size: DPAK package allows for space-saving designs.

Additional Details

The LR1116G-25-AA3-D-R operates over a wide input voltage range. The specific range is found in the datasheet. It also typically features a low quiescent current, which further contributes to energy efficiency. The device's thermal resistance is a critical parameter for determining its maximum power dissipation capability. Consult the datasheet to determine the exact operating parameters and application considerations.