Texas Instruments

LP3964ESX-3.3

LP3964ESX-3.3 Description

The LP3964ESX-3.3 is a linear regulator IC designed by Texas Instruments, offering a fixed output voltage of 3.3V and a maximum output current of 800mA. This device is part of the Power Management (PMIC) category and is housed in a surface-mount DDPAK package. The LP3964ESX-3.3 is designed to operate with an input voltage range up to 7V and features a low dropout voltage of 0.35V at 800mA, making it highly efficient even under high load conditions. The regulator includes an enable control feature and offers comprehensive protection mechanisms such as over-current, over-temperature, and short-circuit protection. Despite its obsolescence status, the LP3964ESX-3.3 remains a reliable choice for applications requiring a stable and efficient power supply.

LP3964ESX-3.3 Features

• Fixed Output Voltage: Provides a stable 3.3V output, ideal for applications requiring a consistent power supply.
• High Output Current: Capable of delivering up to 800mA, suitable for powering demanding electronic circuits.
• Low Dropout Voltage: At 0.35V (max) @ 800mA, this regulator maintains high efficiency even under heavy loads.
• Enable Control Feature: Allows for dynamic control of the regulator's operation, enhancing flexibility in system design.
• Protection Features: Integrated over-current, over-temperature, and short-circuit protections ensure robustness and reliability.
• Low Quiescent Current: With a quiescent current of 9mA, the LP3964ESX-3.3 minimizes power consumption during operation.
• Surface-Mount Packaging: The DDPAK package type facilitates easy integration into compact and space-constrained designs.
• Moisture Sensitivity Level: MSL 3 (168 Hours) ensures the device remains stable and functional in various environmental conditions.

LP3964ESX-3.3 Applications

The LP3964ESX-3.3 is well-suited for a variety of applications where a stable and efficient power supply is crucial. Some specific use cases include:

• Embedded Systems: Provides a reliable power source for microcontrollers, sensors, and other embedded components.
• Consumer Electronics: Ideal for powering devices such as smartphones, tablets, and portable gaming consoles.
• Industrial Equipment: Suitable for powering control systems, PLCs, and other industrial electronics.
• Telecommunications: Can be used in base stations, routers, and other telecom equipment requiring stable power.
• Automotive Electronics: Applicable in vehicle infotainment systems, electronic control units, and other automotive applications.

Conclusion of LP3964ESX-3.3

The LP3964ESX-3.3 from Texas Instruments is a versatile and efficient linear regulator IC that offers a fixed 3.V3 output and a robust set of features. Its low dropout voltage, high output current capability, and comprehensive protection mechanisms make it a reliable choice for a wide range of applications. Despite being marked as obsolete, the LP3964ESX-3.3 remains a valuable component for designers seeking a stable and efficient power supply solution. Its surface-mount packaging and low quiescent current further enhance its suitability for modern, compact electronic designs.