Texas Instruments

LP2992IM5-1.8

LP2992IM5-1.8 Description

The LP2992IM5-1.8 is a fixed-output linear regulator designed by Texas Instruments, offering a stable 1.8V output voltage with a maximum output current of 250mA. This regulator is housed in a compact SOT23-5 package, making it suitable for surface-mount applications. It features a maximum input voltage of 16V and a dropout voltage of 0.85V at full load, ensuring efficient operation even at lower input voltages. The LP2992IM5-1.8 also includes an enable control feature, allowing for dynamic power management and improved system efficiency.

LP2992IM5-1.8 Features

• Fixed Output Voltage: The LP2992IM5-1.8 provides a stable 1.8V output, ideal for applications requiring a precise and consistent power supply.
• High Efficiency: With a dropout voltage of 0.85V at 250mA, this regulator maintains high efficiency even when the input voltage is close to the output voltage.
• Low Quiescent Current: The regulator consumes only 95 µA of quiescent current, making it suitable for low-power and battery-operated devices.
• Enable Control: The enable feature allows for dynamic power control, enabling the regulator to be turned on and off as needed, which can significantly reduce power consumption in standby modes.
• Protection Features: The LP2992IM5-1.8 includes over-current, over-temperature, and short-circuit protection, ensuring robust operation and reliability in various operating conditions.
• Low Noise and High PSRR: The regulator offers a power supply rejection ratio (PSRR) of 45dB at 1kHz, making it suitable for noise-sensitive applications.
• Compact Packaging: The SOT23-5 package is ideal for space-constrained designs, providing a small footprint while maintaining high performance.

LP2992IM5-1.8 Applications

The LP2992IM5-1.8 is well-suited for a variety of applications where a stable and efficient power supply is required. Some specific use cases include:

• Consumer Electronics: Ideal for portable devices such as smartphones, tablets, and wearables, where low power consumption and small form factor are critical.
• Industrial Equipment: Suitable for low-power industrial sensors and controllers, providing reliable power in harsh environments.
• Medical Devices: Applicable in medical equipment where low noise and high reliability are essential, such as portable diagnostic devices and wearable health monitors.
• Telecommunications: Useful in low-power communication modules and IoT devices, ensuring stable power supply for consistent performance.

Conclusion of LP2992IM5-1.8

The LP2992IM5-1.8 from Texas Instruments is a versatile and efficient linear regulator that offers a stable 1.8V output with a maximum current of 250mA. Its low dropout voltage, low quiescent current, and enable control feature make it an excellent choice for low-power applications. The inclusion of over-current, over-temperature, and short-circuit protection ensures reliable operation in various conditions. The regulator's compact SOT23-5 package and high PSRR make it suitable for space-constrained and noise-sensitive designs. While it is marked as "Not For New Designs," the LP2992IM5-1.8 remains a reliable option for existing projects and applications requiring a stable and efficient power supply.