Texas Instruments

LP2989AIMX-1.8  

Linear & Switching Voltage Regulators

LP2989AIMX-1.8 Description

The LP2989AIMX-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 500mA. This device is part of the Power Management Integrated Circuit (PMIC) category and is housed in an 8-pin SOIC package suitable for surface-mount applications. Despite its obsolete status, the LP2989AIMX-1.8 remains a reliable choice for applications requiring a low dropout voltage and high power supply rejection ratio (PSRR).

LP2989AIMX-1.8 Features

• Output Type: Fixed at 1.8V, ensuring a consistent power supply for sensitive electronic components.
• Input Voltage Range: Capable of handling input voltages up to 16V, providing flexibility in power source selection.
• Output Current: Delivers up to 500mA, sufficient for a wide range of low-power applications.
• Low Dropout Voltage: With a maximum dropout voltage of 0.65V at 500mA, the LP2989AIMX-1.8 maintains efficiency even at low input-to-output voltage differentials.
• High PSRR: Achieves 60dB at 1kHz, effectively filtering out noise from the input power supply to ensure clean output voltage.
• Enable Control Feature: Includes an enable pin, allowing for dynamic control of the regulator’s operation, which can be useful in power management systems.
• Protection Features: Equipped with over-current, over-temperature, and short-circuit protection, enhancing reliability and safeguarding against potential faults.
• Low Quiescent Current: Consumes only 175 µA in quiescent mode, minimizing power loss during standby conditions.
• Moisture Sensitivity Level: MSL 1 (Unlimited), making it suitable for a variety of manufacturing environments without additional moisture protection.
• Packaging: Available in a tape and reel (TR) package, facilitating automated assembly processes.

LP2989AIMX-1.8 Applications

The LP2989AIMX-1.8 is well-suited for applications where a stable and efficient power supply is crucial. Its low dropout voltage and high PSRR make it ideal for battery-powered devices, where maintaining a consistent output voltage as the battery discharges is essential. The enable control feature allows for dynamic power management, making it suitable for systems that require power sequencing or sleep modes. Additionally, its robust protection features ensure reliable operation in environments where over-current or short-circuit conditions may occur.

Conclusion of LP2989AIMX-1.8

The LP2989AIMX-1.8 from Texas Instruments is a versatile and reliable fixed-output linear regulator, offering a stable 1.8V output with a maximum current of 500mA. Its low dropout voltage and high PSRR make it an excellent choice for battery-powered applications and systems requiring clean power supply. The inclusion of an enable control feature and comprehensive protection mechanisms further enhance its functionality and reliability. Despite its obsolete status, the LP2989AIMX-1.8 remains a valuable component for applications needing efficient and stable power regulation.

LP2989AIMX-1.8 Documents

Download datasheets and manufacturer documentation for LP2989AIMX-1.8

Datasheets :

LP2989 Datasheet