The LD1117AL-2.5V-A is a low dropout (LDO) voltage regulator manufactured by UTC (Unisonic Technologies Co., Ltd.). This regulator provides a fixed 2.5V output voltage with a low dropout voltage, making it ideal for battery-powered and portable applications. It is designed to deliver a stable and regulated voltage even when the input voltage is close to the output voltage.

Applications

• Battery-Powered Devices: Used in battery-powered devices such as mobile phones, tablets, and portable media players.
• Post Regulation for Switching Regulators: Provides a stable and clean voltage output after a switching regulator.
• Microcontroller Power Supplies: Powers microcontrollers and other digital logic devices requiring a stable 2.5V supply.
• Linear Regulators for Noise Sensitive Applications: Used in applications where low noise and ripple are critical, such as audio and sensor circuits.
• Power Management in Embedded Systems: Provides regulated power for various components in embedded systems.

Features

• Low Dropout Voltage: Ensures regulation even with a small difference between input and output voltage.
• Fixed 2.5V Output: Provides a stable and accurate 2.5V output voltage.
• Overcurrent Protection: Protects the regulator and the load from damage due to excessive current.
• Thermal Overload Protection: Shuts down the regulator to prevent overheating and damage.
• Short Circuit Protection: Protects the regulator from damage due to short circuits.

Benefits

• Extended Battery Life: Low dropout voltage improves efficiency, extending battery life in portable applications.
• Stable Output Voltage: Provides a stable and accurate output voltage, ensuring reliable operation of connected devices.
• Protection Against Overloads and Short Circuits: Built-in protection features prevent damage to the regulator and the load.
• Simplified Design: Requires minimal external components, simplifying the design process.
• Wide Operating Temperature Range: Operates over a wide temperature range, making it suitable for various environments.

Additional Details

The LD1117AL-2.5V-A is typically available in a SOT-223 package. It requires a small output capacitor for stability, typically a ceramic capacitor. Detailed specifications, including input voltage range, output current, and dropout voltage, can be found in the UTC datasheet for this part.