Texas Instruments

LP3872ESX-3.3  

Linear & Switching Voltage Regulators

LP3872ESX-3.3 Description

The LP3872ESX-3.3 is a high-performance linear regulator designed by Texas Instruments, offering a fixed output voltage of 3.3V with a maximum output current of 1.5A. This regulator is part of the Power Management Integrated Circuits (PMIC) category and is housed in a surface-mount DDPAK package, making it suitable for a wide range of applications. The device features a maximum input voltage of 7V and a dropout voltage of 0.55V at 1.5A, ensuring efficient operation even under varying load conditions. The LP3872ESX-3.3 also includes an enable control feature and robust protection mechanisms such as over-current, over-temperature, and short-circuit protection.

LP3872ESX-3.3 Features

• Fixed Output Voltage: The LP3872ESX-3.3 provides a stable 3.3V output, making it ideal for applications requiring a precise and consistent power supply.
• High Current Capability: With a maximum output current of 1.5A, this regulator can support demanding applications that require significant power.
• Low Dropout Voltage: The maximum dropout voltage of 0.55V at 1.5A ensures high efficiency, especially in low-voltage applications.
• Enable Control Feature: The enable pin allows for dynamic control of the regulator, enabling power-saving modes and precise control over power delivery.
• Protection Features: Over-current, over-temperature, and short-circuit protection ensure operation reliable and protect the device from potential damage.
• Low Quiescent Current: The quiescent current of 5 mA minimizes power consumption in standby mode, enhancing overall system efficiency.
• High PSRR: The Power Supply Rejection Ratio (PSRR) ranges from 73dB to 57dB at 120Hz, providing excellent noise rejection and stable output voltage.
• Moisture Sensitivity Level: MSL 3 (168 Hours) ensures the device is suitable for various environmental conditions without compromising performance.

LP3872ESX-3.3 Applications

The LP3872ESX-3.3 is well-suited for a variety of applications where a stable and efficient power supply is critical. Some specific use cases include:

• Consumer Electronics: Ideal for powering devices such as smartphones, tablets, and portable gaming consoles that require a stable 3.3V supply.
• Industrial Equipment: Suitable for industrial control systems, sensors, and actuators that demand reliable power and protection features.
• Telecommunications: Can be used in base stations, routers, and other networking equipment where high efficiency and low noise are essential.
• Automotive Electronics: Applicable in automotive systems such as infotainment units, ECUs, and other electronic modules that require precise voltage regulation.

Conclusion of LP3872ESX-3.3

The LP3872ESX-3.3 from Texas Instruments is a versatile and efficient linear regulator designed to meet the demands of modern electronic systems. Its fixed 3.3V output, high current capability, and low dropout voltage make it an excellent choice for applications requiring stable and efficient power delivery. The inclusion of enable control and comprehensive protection features further enhances its reliability and flexibility. Despite being marked as obsolete, the LP3872ESX-3.3 remains a robust solution for applications that require a reliable and efficient power management solution.

LP3872ESX-3.3 Documents

Download datasheets and manufacturer documentation for LP3872ESX-3.3

Datasheets :

LP3872, LP3875 Datasheet