The LP2950CN-3.3/TR is a low dropout (LDO) voltage regulator manufactured by Exar Corporation. It's designed to provide a stable 3.3V output with a minimal voltage drop, making it ideal for battery-powered and portable applications where efficiency is key. Its low quiescent current further enhances efficiency, prolonging battery life. The regulator is packaged in a through-hole format, typically a TO-92 package.

Applications

• Microcontroller Power: Provides a clean and stable 3.3V supply for microcontrollers in embedded systems.
• Battery-Powered Devices: Used in portable devices like handheld meters, wireless sensors, and remote controls to extend battery life.
• Low-Voltage Logic Supplies: Powers low-voltage digital circuits, ensuring stable operation.
• Post-Regulation: Used after switching regulators to reduce ripple and noise, improving the performance of sensitive circuits.
• Instrumentation: Provides stable power for analog and digital components in test and measurement equipment.

Features

• 3.3V Fixed Output: Delivers a precise and stable 3.3V output voltage.
• Low Dropout Voltage: Maintains regulation with a low input-to-output voltage difference, maximizing efficiency.
• Low Quiescent Current: Minimizes current draw in standby mode, conserving battery power.
• Short Circuit Protection: Protects the regulator from damage in the event of a short circuit.
• Thermal Overload Protection: Shuts down the regulator if it overheats, preventing damage.
• Reverse Battery Protection: Prevents damage if the battery is connected with incorrect polarity.

Benefits

• Extended Battery Life: Low quiescent current and low dropout voltage significantly reduce power consumption, leading to longer battery life in portable devices.
• Improved System Reliability: Built-in protection features prevent damage from short circuits, overheating, and reverse battery connections.
• Stable and Clean Power: Provides a consistent 3.3V output, ensuring reliable operation of connected components.
• Simplified Circuit Design: Requires minimal external components, making integration easier.
• Cost-Effective: Offers a reliable solution at a reasonable cost.

Additional Details

The LP2950CN-3.3/TR is a popular choice for many applications due to its simplicity, reliability, and efficiency. It is easy to use and requires only a few external components to function. Its robust protection features make it a durable solution for various environments. The through-hole package allows for easy prototyping and breadboarding.

Technical Specifications:

• Output Voltage: 3.3V
• Dropout Voltage: Typically 380mV at 100mA
• Quiescent Current: Typically 75μA
• Operating Temperature Range: -40°C to +125°C
• Package Type: TO-92