Texas Instruments

LP5951MG-3.0

LP5951MG-3.0 Description

The LP5951MG-3.0 is a linear regulator designed by Texas Instruments, offering a fixed output voltage of 3V and a maximum output current of 150mA. This single regulator device is optimized for low power consumption, with a maximum supply current of 70 µA and a quiescent current of 55 µA. The regulator is designed to operate efficiently within an input voltage range up to 5.5V, making it suitable for applications where power efficiency and low dropout voltage are critical. The dropout voltage is maximized at 0.35V when delivering 150mA, ensuring high efficiency even at low input voltages.

LP5951MG-3.0 Features

• Output Type: Fixed at 3V, providing a stable and reliable power source.
• Input Voltage Range: Up to 5.5V, allowing for flexibility in power supply options.
• Output Current: Capable of delivering up to 150mA, suitable for a wide range of low-power applications.
• Low Dropout Voltage: Maximum of 0.35V at 150mA, ensuring high efficiency and minimal power loss.
• Low Quiescent Current: 55 µA, contributing to overall power savings.
• Control Features: Includes an enable function, allowing for dynamic control of the regulator's operation.
• Protection Features: Over current, over temperature, and short circuit protection ensure robustness and reliability.
• Mounting Type: Surface mount, suitable for compact and space-constrained designs.
• Package: Tape & Reel (TR), facilitating easy handling and integration into automated assembly processes.
• Performance: High PSRR (Power Supply Rejection Ratio) ranging from 60dB to 50dB across frequencies from 100Hz to 10kHz, ensuring minimal noise and ripple in the output voltage.

LP5951MG-3.0 Applications

The LP5951MG-3.0 is ideal for applications requiring a stable and efficient power supply with low power consumption. Its low dropout voltage and low quiescent current make it particularly suitable for battery-powered devices and portable electronics. Specific use cases include:

• Battery-Powered Devices: Ideal for applications where battery life is critical, such as handheld devices and wearables.
• Portable Electronics: Suitable for compact designs where space and power efficiency are paramount.
• Low-Power Systems: Applicable in systems requiring minimal power consumption, such as IoT devices and sensors.
• Medical Devices: Its reliability and protection features make it suitable for medical equipment where consistent power supply is essential.

Conclusion of LP5951MG-3.0

The LP5951MG-3.0 from Texas Instruments stands out as a highly efficient and reliable linear regulator, offering a fixed 3V output with a maximum current of 150mA. Its low dropout voltage and low quiescent current make it an excellent choice for applications where power efficiency and minimal power loss are crucial. The inclusion of over current, over temperature, and short circuit protection ensures robustness and reliability, making it suitable for a wide range of low-power applications. Despite being marked as obsolete, the LP5951MG-3.0 remains a valuable component for specific use cases, particularly in battery-powered and portable electronic devices.