Texas Instruments

LP3875ET-3.3  

Linear & Switching Voltage Regulators

LP3875ET-3.3 Description

The LP3875ET-3.3 is a fixed output linear regulator designed by Texas Instruments, offering a robust and reliable solution for power management applications. This regulator is part of the Power Management Integrated Circuits (PMIC) category and is housed in a Through Hole package, specifically a TO-220-5 tube. It provides a fixed output voltage of 3.3V with a maximum output current capability of 1.5A. The LP3875ET-3.3 is designed to operate with an input voltage range up to 7V, ensuring compatibility with a wide array of power sources.

LP3875ET-3.3 Features

• Output Type: Fixed, ensuring a stable and consistent 3.3V output.
• Input Voltage Range: Up to 7V, providing flexibility in power source selection.
• Output Current: Capable of delivering up to 1.5A, suitable for a variety of demanding applications.
• Low Dropout Voltage: A maximum dropout voltage of 0.55V at 1.5A, enhancing efficiency and performance in low-voltage applications.
• Enable Control Feature: Allows for dynamic control of the regulator's operation, enabling power-saving modes and precise control over power delivery.
• Protection Features: Over Current, Over Temperature, and Short Circuit protections ensure the longevity and reliability of the device in various operating conditions.
• Low Quiescent Current: Only 5 mA, minimizing power consumption during standby or low-load conditions.
• High Power Supply Rejection Ratio (PSRR): Ranging from 73dB to 57dB at 120Hz, ensuring excellent noise rejection and stable output voltage.
• Moisture Sensitivity Level (MSL): Level 1 (Unlimited), making it suitable for a wide range of environmental conditions.
• Product Status: Although marked as Obsolete, the LP3875ET-3.3 remains a viable option for existing designs and legacy systems.

LP3875ET-3.3 Applications

The LP3875ET-3.3 is ideal for applications requiring a stable 3.3V supply with high current capabilities. Its low dropout voltage and high PSRR make it particularly suitable for applications where input voltage fluctuations are common. Some specific use cases include:

• Embedded Systems: Providing a stable power supply for microcontrollers, sensors, and other low-voltage components.
• Communication Equipment: Ensuring reliable power delivery in routers, switches, and other networking devices.
• Industrial Control Systems: Offering robust power management for PLCs, motor controllers, and other industrial applications.
• Consumer Electronics: Powering devices such as set-top boxes, gaming consoles, and other consumer products that require a stable and efficient power supply.

Conclusion of LP3875ET-3.3

The LP3875ET-3.3 from Texas Instruments is a versatile and reliable linear regulator designed for applications requiring a stable 3.3V output with high current capabilities. Its low dropout voltage, high PSRR, and comprehensive protection features make it an excellent choice for a wide range of power management needs. Despite its obsolete status, the LP3875ET-3.3 remains a valuable component for maintaining the functionality of existing systems and ensuring the stability and efficiency of power delivery in various electronic applications.

LP3875ET-3.3 Documents

Download datasheets and manufacturer documentation for LP3875ET-3.3