Texas Instruments

LP3872ES-1.8

LP3872ES-1.8 Description

The LP3872ES-1.8 is a high-performance linear regulator designed by Texas Instruments, offering a fixed output voltage of 1.8V and a maximum output current of 1.5A. This device is part of the Power Management Integrated Circuits (PMIC) category and is housed in a DDPAK package, making it suitable for surface mount applications. The regulator is designed to operate efficiently with a maximum input voltage of 7V and features a low dropout voltage of 0.55V at full load, ensuring high efficiency even under low input-to-output voltage differentials.

LP3872ES-1.8 Features

• Output Type: Fixed at 1.8V, providing a stable power supply for sensitive electronic components.
• Input Voltage Range: Supports a maximum input voltage of 7V, making it versatile for various power supply configurations.
• Output Current: Capable of delivering up to 1.5A, suitable for applications requiring moderate to high current loads.
• Low Dropout Voltage: With a maximum dropout voltage of 0.55V at 1.5A, the LP3872ES-1.8 ensures high efficiency and minimal power loss.
• Enable Control Feature: Includes an enable pin, allowing for dynamic control of the regulator's operation, which is beneficial for power management in complex systems.
• Protection Features: Equipped with over-current, over-temperature, and short-circuit protection, ensuring robustness and reliability in demanding environments.
• Low Quiescent Current: Features a quiescent current of only 5 mA, contributing to energy efficiency and prolonged battery life in portable devices.
• High PSRR: Offers a high power supply rejection ratio (PSRR) ranging from 73dB to 57dB at 120Hz, ensuring clean and stable output voltage even with noisy input sources.
• Moisture Sensitivity Level: MSL 3 (168 Hours), making it suitable for use in environments with varying humidity levels.
• Mounting Type: Surface mount, ideal for compact and high-density PCB designs.

LP3872ES-1.8 Applications

The LP3872ES-1.8 is ideal for a variety of applications where a stable and efficient power supply is required. Some specific use cases include:

• Consumer Electronics: Ideal for powering sensitive components in devices such as smartphones, tablets, and portable media players.
• Industrial Equipment: Suitable for powering sensors, microcontrollers, and other low-power circuits in industrial control systems.
• Telecommunications: Provides a reliable power source for base stations, routers, and other communication equipment.
• Automotive Electronics: Can be used in automotive infotainment systems, electronic control units (ECUs), and other automotive applications requiring stable power.
• Medical Devices: Ensures stable power delivery for medical equipment such as diagnostic devices, monitoring systems, and portable medical instruments.

Conclusion of LP3872ES-1.8

The LP3872ES-1.8 from Texas Instruments stands out as a reliable and efficient linear regulator, offering a fixed 1.8V output with a maximum current of 1.5A. Its low dropout voltage and high PSRR make it particularly advantageous in applications where efficiency and stability are paramount. The inclusion of enable control and comprehensive protection features further enhances its versatility and reliability. While marked as "Not For New Designs," the LP3872ES-1.8 remains a valuable component for existing systems and applications requiring a robust and efficient power management solution.