Texas Instruments

LP3855EMPX-3.3/NOPB  

Linear & Switching Voltage Regulators

LP3855EMPX-3.3/NOPB Description

The LP3855EMPX-3.3/NOPB is a linear voltage regulator designed by Texas Instruments, featuring a fixed output of voltage 3.3V and capable of delivering up to 1.5A of output current. This device is housed in a Surface Mount SOT223-5 package, making it suitable for compact and efficient power management solutions. The regulator operates with an input voltage range up to 7V, ensuring compatibility with a variety of power sources. It offers a low dropout voltage of 0.44V at 1.5A, which enhances efficiency and performance in applications where input voltage is close to the output voltage.

LP3855EMPX-3.3/NOPB Features

• Fixed Output Voltage: The LP3855EMPX-3.3/NOPB provides a stable 3.3V output, making it ideal for applications requiring a consistent power supply.
• High Output Current: 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 0.44V at 1.5A ensures high efficiency, especially in low-headroom applications.
• Enable Control Feature: The regulator includes an enable pin, allowing for dynamic control and power savings when the regulator is not in use.
• Protection Features: Over-current, over-temperature, and short-circuit protections ensure robustness and reliability in various operating conditions.
• Low Quiescent Current: The regulator consumes only 3mA in quiescent mode, minimizing power loss and enhancing overall efficiency.
• High PSRR: The power supply rejection ratio (PSRR) ranges from 73dB to 57dB at 120Hz, providing excellent noise suppression and stable output voltage.
• Compliance and Compatibility: The LP3855EMPX-3.3/NOPB is REACH unaffected and RoHS3 compliant, ensuring environmental sustainability and regulatory compliance.
• Moisture Sensitivity Level: The MSL rating of 1 (Unlimited) makes it suitable for a wide range of manufacturing environments without the need for special handling.

LP3855EMPX-3.3/NOPB Applications

The LP3855EMPX-3.3/NOPB is well-suited for a variety of applications where a reliable and efficient power supply is essential. Its compact size and high current capability make it ideal for:

• Embedded Systems: Providing stable power to microcontrollers, sensors, and other components in embedded systems.
• Consumer Electronics: Powering devices such as smartphones, tablets, and portable gaming consoles.
• Industrial Control Systems: Ensuring reliable power supply in PLCs, automation equipment, and other industrial applications.
• Telecommunications: Supplying power to base stations, routers, and other networking equipment.
• Automotive Electronics: Supporting various electronic systems in vehicles, including infotainment, navigation, and safety systems.

Conclusion of LP3855EMPX-3.3/NOPB

The LP3855EMPX-3./N3OPB from Texas Instruments is a versatile and efficient linear voltage regulator, offering a fixed 3.3V output and a maximum output current of 1.5A. Its low dropout voltage, enable control feature, and comprehensive protection mechanisms make it a reliable choice for a wide range of applications. Despite being marked as obsolete, the LP3855EMPX-3.3/NOPB remains a valuable component for engineers and designers seeking a robust power management solution. Its compliance with REACH and RoHS3 standards ensures it meets environmental and regulatory requirements, making it a sustainable choice for modern electronics.

LP3855EMPX-3.3/NOPB Documents

Download datasheets and manufacturer documentation for LP3855EMPX-3.3/NOPB