The LP2987AIM-2.8 is a 50 mA, fixed-output, low-dropout (LDO) voltage regulator manufactured by National Semiconductor, now part of Texas Instruments (TI). This regulator is designed to provide a stable and regulated 2.8V output voltage from a higher input voltage, with minimal voltage drop even under load. It's commonly used in portable devices and battery-powered applications where efficiency and low power consumption are critical.

Applications

• Portable Devices: Provides regulated power for handheld devices, such as cell phones and PDAs.
• Battery-Powered Systems: Used in battery-powered equipment to maintain a stable voltage supply.
• Wireless Communication Devices: Regulates voltage in wireless transceivers and modules.
• Microcontroller Power Supplies: Provides a stable voltage supply for microcontrollers and processors.

Features

• Low Dropout Voltage: Maintains regulation with minimal input-to-output voltage difference.
• Fixed 2.8V Output: Provides a stable and regulated output voltage.
• 50mA Output Current: Delivers up to 50mA of output current.
• Low Quiescent Current: Minimizes power consumption when the output is not loaded.

Benefits

• Extended Battery Life: Low dropout voltage and low quiescent current maximize battery runtime.
• Stable Voltage Supply: Ensures reliable operation of sensitive electronic components.
• Simplified System Design: Requires minimal external components.
• Compact Design: Available in small surface-mount packages.

Additional Details

The LP2987AIM-2.8's key specifications include its input voltage range, output voltage accuracy, dropout voltage, and quiescent current. It is crucial to consult the datasheet for detailed electrical characteristics, thermal considerations, and application circuit recommendations. This LDO regulator typically includes built-in protection features such as short-circuit protection and thermal shutdown. The device is available in a variety of packages, such as SOIC (Small Outline Integrated Circuit) or SOT (Small Outline Transistor), depending on the application requirements. Due to National Semiconductor being acquired by TI, sourcing should be done through TI or authorized distributors.