Texas Instruments

LP3988IMF-3.3

LP3988IMF-3.3 Description

The LP3988IMF-3.3 is a fixed output linear voltage regulator designed by Texas Instruments, offering a stable 3.3V output voltage with a maximum output current of 150mA. This regulator is housed in a compact SOT23-5 package, making it suitable for surface mount applications. The LP3988IMF-3.3 features a low dropout voltage of 0.15V at 150mA, ensuring efficient operation even at low input voltages, down to a maximum input voltage of 6V. It also boasts a low quiescent current of 120 µA, which is ideal for battery-powered and low-power applications.

LP3988IMF-3.3 Features

• Output Type: Fixed at 3.3V, providing a stable voltage supply for various electronic circuits.
• Input Voltage Range: Up to 6V, allowing for flexibility in power source selection.
• Output Current: Capable of delivering up to 150mA, suitable for powering small to medium-sized devices.
• Low Dropout Voltage: 0.15V at 150mA, ensuring efficient operation at low input voltages.
• Low Quiescent Current: 120 µA, minimizing power consumption in standby mode.
• Control Features: Includes enable and power good functionalities, providing precise control over the regulator's operation.
• Protection Features: Over-temperature and short-circuit protection, enhancing reliability and safety.
• Output Configuration: Positive, ensuring compatibility with a wide range of electronic systems.
• Supply Current: Maximum of 200 µA, contributing to overall power efficiency.
• Power Supply Rejection Ratio (PSRR): 65dB to 45dB across the frequency range of 1kHz to 10kHz, ensuring high performance in noisy environments.

LP3988IMF-3.3 Applications

The LP3988IMF-3.3 is ideal for a variety of applications where a stable 3.3V supply is required. Its low dropout voltage and low quiescent current make it particularly well-suited for battery-powered devices, portable electronics, and low-power systems. Specific use cases include:

• Battery-Powered Devices: Ideal for applications where battery life is critical, such as handheld devices, wearable technology, and remote sensors.
• Portable Electronics: Suitable for powering small electronic devices that require a stable 3.3V supply, such as MP3 players, GPS units, and digital cameras.
• Low-Power Systems: Applicable in systems where power efficiency is paramount, such as IoT devices, smart meters, and embedded systems.
• Medical Devices: Can be used in low-power medical equipment, ensuring reliable operation and long battery life.

Conclusion of LP3988IMF-3.3

The LP3988IMF-3.3 from Texas Instruments is a versatile and efficient linear voltage regulator, offering a stable 3.3V output with a maximum current of 150mA. Its low dropout voltage and low quiescent current make it an excellent choice for battery-powered and low-power applications. The inclusion of enable and power good control features, along with over-temperature and short-circuit protection, ensures reliable and safe operation. While the product is now obsolete, its unique features and performance benefits continue to make it a valuable component for specific applications in the electronics industry.