Texas Instruments

LP3855ES-3.3  

Linear & Switching Voltage Regulators

LP3855ES-3.3 Description

The LP3855ES-3.3 is a fixed output linear voltage regulator designed by Texas Instruments, offering a robust and efficient solution for applications requiring a stable 3.3V supply. This regulator is part of the Linear & Switching Voltage Regulators category and is housed in a DDPAK package, making it suitable for surface mount applications. Despite its obsolete status, the LP3855ES-3.3 remains a reliable choice for specific applications due to its unique features and performance benefits.

LP3855ES-3.3 Features

• Output Type: Fixed at 3.3V, ensuring a consistent and reliable power supply.
• Input Voltage Range: Capable of handling up to 7V, providing flexibility in input power sources.
• Output Current: Delivers a maximum of 1.5A, making it suitable for high-current applications.
• Low Dropout Voltage: With a maximum dropout voltage of 0.38V at 1.5A, the LP3855ES-3.3 maintains high efficiency even at low input-to-output voltage differentials.
• Enable Control Feature: Offers an enable pin for easy control and power management.
• Protection Features: Includes over-current, over-temperature, and short-circuit protection, ensuring robustness and reliability.
• Low Quiescent Current: Consumes only 3 mA in quiescent mode, minimizing power loss in standby conditions.
• High PSRR: Provides a power supply rejection ratio of 73dB to 57dB at 120Hz, ensuring excellent noise immunity and stable output.
• Moisture Sensitivity Level: MSL 3 (168 Hours), suitable for various environmental conditions.
• Mounting Type: Surface mount, ideal for compact and space-constrained designs.
• Package Type: Available in a tube package, facilitating easy handling and integration.

LP3585ES-3.3 Applications

The LP3855ES-3.3 is ideal for a variety of applications where a stable and efficient power supply is crucial. Its high current capability and low dropout voltage make it particularly suitable for:

• Embedded Systems: Providing a reliable power supply for microcontrollers, sensors, and other low-power electronics.
• Communication Equipment: Ensuring stable power for RF modules, modems, and other communication interfaces.
• Industrial Control Systems: Offering robust power management for PLCs, actuators, and other industrial components.
• Consumer Electronics: Suitable for powering devices such as smartphones, tablets, and portable gaming consoles.
• Automotive Electronics: Reliable for in-car electronics, infotainment systems, and other automotive applications.

Conclusion of LP3855ES-3.3

The LP3855ES-3.3 is a versatile and reliable linear voltage regulator that offers a fixed 3.3V output with a maximum current of 1.5A. Its low dropout voltage, high PSRR, and comprehensive protection features make it a robust choice for a wide range of applications. Despite being marked as obsolete, the LP3855ES-3.3 remains a valuable component for specific use cases where its unique features and performance benefits are essential. For applications requiring a stable and efficient power supply, the LP3855ES-3.3 is an excellent solution from Texas Instruments.

LP3855ES-3.3 Documents

Download datasheets and manufacturer documentation for LP3855ES-3.3