Texas Instruments

LP5951MF-1.8

LP5951MF-1.8 Description

The LP5951MF-1.8 is a fixed-output linear voltage regulator designed by Texas Instruments, offering a stable 1.8V output with a maximum output current of 150mA. This regulator is housed in a compact SOT23-5 package, making it suitable for surface-mount applications. It features a low dropout voltage of 0.35V at 150mA, ensuring efficient power conversion even at low input voltages. The LP5951MF-1.8 also boasts a low quiescent current of 55 µA, contributing to its high efficiency and suitability for low-power applications.

LP5951MF-1.8 Features

• Output Type: Fixed 1.8V output voltage.
• Input Voltage Range: Up to 5.5V, providing 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: 0.35V at 150mA, ensuring efficient operation at low input-to-output voltage differentials.
• Low Quiescent Current: 55 µA, minimizing power consumption in standby or low-load conditions.
• 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, compatible with modern PCB assembly techniques.
• Package: Tape & Reel (TR), facilitating automated assembly processes.
• Regulator Count: Single regulator, simplifying design and reducing component count.
• Output Configuration: Positive, providing a straightforward power supply solution.
• Power Supply Rejection Ratio (PSRR): 60dB to 50dB across the frequency range of 100Hz to 10kHz, ensuring clean output voltage.
• Moisture Sensitivity Level (MSL): Level 1 (Unlimited), suitable for various environmental conditions.
• Product Status: Obsolete, but still available for legacy designs and existing applications.
• REACH Status: REACH Unaffected, ensuring compliance with environmental regulations.

LP5951MF-1.8 Applications

The LP5951MF-1.8 is ideal for applications requiring a stable 1.8V supply with low power consumption and efficient operation. Its low dropout voltage and low quiescent current make it particularly suitable for battery-powered devices, portable electronics, and IoT devices. The enable function allows for dynamic power management, making it a versatile choice for applications where power efficiency is critical. The regulator's compact size and surface-mount package also make it suitable for space-constrained designs.

Conclusion of LP5951MF-1.8

The LP5951MF-1.8 is a robust and efficient linear voltage regulator designed for applications requiring a stable 1.8V supply. Its low dropout voltage, low quiescent current, and enable function provide significant advantages over similar models, making it an ideal choice for low-power and portable applications. Despite its obsolete status, the LP5951MF-1.8 remains a reliable option for existing designs and legacy systems, ensuring continued support and availability.