The LP2950-3.3 is a micropower voltage regulator manufactured by First Components International. It is specifically designed for use in battery-powered systems and other applications where low dropout and minimal power consumption are critical. The device features a very low quiescent current (typically 75 μA) and a low dropout voltage, making it suitable for extending battery life in portable devices.

Applications:

• Battery-powered systems
• Portable computers
• Cordless telephones
• Radio control systems
• Solar-powered systems
• Instrumentation

Features:

• 3.3V Output Voltage: Provides a stable 3.3V output.
• Low Dropout Voltage: Typically 50 mV at light loads and 380 mV at 100 mA.
• Low Quiescent Current: Typically 75 μA.
• High Accuracy: Output voltage trimmed to ±0.5% accuracy.
• Short Circuit Protection: Protects the regulator from damage due to short circuits.
• Reverse Battery Protection: Prevents damage if the battery is connected with reversed polarity.
• Thermal Overload Protection: Shuts down the regulator in case of overheating.
• Logic-Controlled Shutdown: Reduces power consumption further when not actively regulating.

Benefits:

• Extended Battery Life: Low quiescent current and low dropout voltage minimize power consumption, extending battery life in portable applications.
• Stable Output Voltage: High accuracy and load regulation ensure a stable and reliable output voltage for sensitive electronic circuits.
• Robust Protection: Short circuit, reverse battery, and thermal overload protection features safeguard the regulator and connected components from damage.
• Simplified Design: Requires minimal external components, simplifying circuit design and reducing board space.
• Reduced Power Dissipation: Low dropout voltage minimizes power dissipation, improving overall system efficiency.

Technical Specifications:

The LP2950-3.3 comes in various package options. It typically operates over a temperature range of -40°C to +125°C. The input voltage range is typically from 3.6V to 30V, but it's essential to consult the datasheet for absolute maximum ratings. The output current capability is typically up to 100mA. An external capacitor is usually recommended for output stability.