Texas Instruments

LP3981IMM-3.3  

Linear & Switching Voltage Regulators

LP3981IMM-3.3 Description

The LP3981IMM-3.3 is a fixed output linear voltage regulator designed by Texas Instruments, offering a stable 3.3V output voltage with a maximum output current of 300mA. This regulator is housed in an 8-pin VSSOP package, making it suitable for surface mount applications. The LP3981IMM-3.3 is designed to operate efficiently with a maximum input voltage of 6V and features a low dropout voltage of 0.2V at 300mA, ensuring high performance even under low input-to-output voltage differentials. The regulator also boasts a low quiescent current of 120 µA and a supply current of 210 µA, making it ideal for low-power applications. Additional features include enable control, over-current protection, over-temperature protection, and short-circuit protection, ensuring reliable operation in various conditions.

LP3981IMM-3.3 Features

• Fixed Output Voltage: Provides a stable 3.3V output, ideal for powering digital circuits and microcontrollers.
• Low Dropout Voltage: With a maximum dropout voltage of 0.2V at 300mA, the LP3981IMM-3.3 can maintain regulation even when the input voltage is close to the output voltage.
• Low Quiescent Current: A quiescent current of 120 µA ensures minimal power consumption, making it suitable for battery-powered devices.
• Enable Control: The enable feature allows for dynamic control of the regulator's operation, enabling power savings and efficient power management.
• Protection Features: Over-current, over-temperature, and short-circuit protections ensure robustness and reliability in various operating conditions.
• High PSRR: A power supply rejection ratio (PSRR) of 50dB to 55dB across a frequency range of 1kHz to 10kHz helps in filtering out noise from the input power supply.
• Compliance: The LP3981IMM-3.3 is REACH unaffected and RoHS3 compliant, adhering to environmental and safety standards.
• Moisture Sensitivity Level: MSL 1 (Unlimited) indicates that the component can be exposed to moisture without degradation, enhancing its usability in different environments.

LP3981IMM-3.3 Applications

The LP3981IMM-3.3 is well-suited for a variety of applications where a stable and efficient power supply is required. Its low dropout voltage and low quiescent current make it ideal for battery-powered devices, such as portable electronics, handheld devices, and IoT sensors. The enable control feature allows for dynamic power management, making it suitable for applications where power consumption needs to be minimized during idle periods. The regulator's robust protection features ensure reliable operation in industrial and automotive environments, where harsh conditions and transient voltages are common. Additionally, its high PSRR helps in maintaining clean power supply to sensitive analog and digital circuits, making it suitable for use in communication systems and medical devices.

Conclusion of LP3981IMM-3.3

The LP3981IMM-3.3 from Texas Instruments is a versatile and efficient linear voltage regulator, offering a stable 3.3V output with a maximum current of 300mA. Its low dropout voltage, low quiescent current, and comprehensive protection features make it an excellent choice for a wide range of applications, particularly in battery-powered and low-power devices. The enable control feature provides additional flexibility in power management, while its high PSRR ensures clean power supply to sensitive circuits. With its compliance to environmental and safety standards, the LP3981IMM-3.3 is a reliable and high-performance solution for modern electronic designs.

LP3981IMM-3.3 Documents

Download datasheets and manufacturer documentation for LP3981IMM-3.3

Datasheets :

LP3981      

PCN Obsolescence/ EOL :

EOL 18/Sept/2023      

HTML Datasheet :

LP3981      

PCN Design/Specification :

VSSOP Pkg Copper Wire 07/Jun/2013