Texas Instruments

LP2989IMMX-2.8

LP2989IMMX-2.8 Description

The LP2989IMMX-2.8 is a fixed output linear regulator from Texas Instruments, designed to provide a stable 2.8V output voltage with a maximum output current of 500mA. This regulator is housed in an 8-pin VSSOP package and is suitable for surface mount applications. It features a maximum input voltage of 16V and a dropout voltage of 0.65V at 500mA, ensuring efficient operation even at high input voltages. The regulator also includes an enable control feature, which allows for dynamic power management and reduced power consumption when not in use.

LP2989IMMX-2.8 Features

• Output Type: Fixed at 2.8V, providing a stable voltage supply for sensitive electronic components.
• Input Voltage Range: Capable of handling up to 16V, making it suitable for a wide range of input power sources.
• Output Current: Delivers up to 500mA, sufficient for powering various low-power devices and microcontrollers.
• Dropout Voltage: Low dropout voltage of 0.65V at 500mA ensures high efficiency and minimal power loss.
• Enable Control: Features an enable pin for dynamic power management, allowing the regulator to be turned on and off as needed.
• Protection Features: Includes over-current, over-temperature, and short-circuit protection to safeguard the regulator and connected circuits.
• Low Quiescent Current: Consumes only 175 µA in quiescent mode, minimizing power consumption during standby.
• High PSRR: Achieves 60dB Power Supply Rejection Ratio at 1kHz, ensuring minimal noise and interference in the output voltage.
• Moisture Sensitivity Level: MSL 1 (Unlimited), suitable for a wide range of environmental conditions without additional moisture protection.

LP2989IMMX-2.8 Applications

The LP2989IMMX-2.8 is ideal for applications requiring a stable and efficient power supply. Some specific use cases include:

• Embedded Systems: Provides a reliable power source for microcontrollers and other low-power embedded devices.
• Consumer Electronics: Suitable for portable devices where low power consumption and high efficiency are critical.
• Industrial Equipment: Ideal for powering sensors and control circuits in industrial environments.
• Communication Devices: Ensures stable power delivery for communication modules and IoT devices.
• Battery-Powered Devices: Efficient power management and low dropout voltage make it suitable for battery-operated applications.

Conclusion of LP2989IMMX-2.8

The LP2989IMMX-2.8 from Texas Instruments is a robust and efficient linear regulator designed for applications requiring a stable 2.8V output. Its low dropout voltage, high PSRR, and comprehensive protection features make it a reliable choice for a variety of electronic systems. The enable control feature further enhances its versatility, allowing for dynamic power management and reduced power consumption. Despite being marked as obsolete, the LP2989IMMX-2.8 remains a valuable component for designers seeking a high-performance, low-power regulator.