Texas Instruments

LP5951MFX-1.5

LP5951MFX-1.5 Description

The LP5951MFX-1.5 is a fixed-output linear regulator designed by Texas Instruments, offering a robust and efficient solution for power management applications. This regulator is part of the Power Management Integrated Circuit (PMIC) category and is housed in a compact SOT23-5 package, making it ideal for space-constrained designs. The LP5951MFX-1.5 provides a fixed output voltage of 1.5V and can deliver a maximum output current of 150mA. It features a maximum input voltage of 5.5V and boasts a low dropout voltage of 0.35V at 150mA, ensuring high efficiency even under low input-to-output voltage differentials.

LP5951MFX-1.5 Features

• Output Type: Fixed at 1.5V, ensuring stable power supply for sensitive electronic components.
• Input Voltage Range: Up to 5.5V, providing flexibility in power source selection.
• 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, enhancing efficiency and extending battery life in portable devices.
• Low Quiescent Current: Only 55 µA, minimizing power consumption during standby or low-load conditions.
• Control Features: Includes an enable function, allowing precise control over the regulator's operation.
• Protection Features: Over current, over temperature, and short circuit protection ensure reliable operation and safeguard against potential faults.
• Mounting Type: Surface mount, compatible with modern PCB assembly processes.
• Package: Tape & Reel (TR), facilitating automated production and handling.
• Moisture Sensitivity Level (MSL): Level 1 (Unlimited), suitable for a variety of manufacturing environments.

LP5951MFX-1.5 Applications

The LP5951MFX-1.5 is well-suited for a variety of applications where a stable and efficient power supply is critical. Its low dropout voltage and low quiescent current make it ideal for battery-powered devices, such as portable electronics, handheld devices, and wearable technology. The fixed 1.5V output is particularly beneficial for applications requiring a precise voltage level, such as powering microcontrollers, sensors, and other low-power peripherals. The enable function allows for dynamic power management, making it suitable for systems that require power sequencing or sleep mode operation.

Conclusion of LP5951MFX-1.5

The LP5951MFX-1.5 from Texas Instruments is a versatile and efficient linear regulator, offering a fixed 1.5V output with a maximum current of 150mA. Its low dropout voltage and low quiescent current make it an excellent choice for battery-powered applications, ensuring extended battery life and efficient power management. The inclusion of enable control and comprehensive protection features further enhances its reliability and flexibility. Despite being marked as obsolete, the LP5951MFX-1.5 remains a valuable component for designers seeking a compact, high-performance power management solution.