Texas Instruments

LP3981IMM-2.7

LP3981IMM-2.7 Description

The LP3981IMM-2.7 is a fixed-output linear voltage regulator designed by Texas Instruments, offering a stable 2.7V 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. It features a low dropout voltage of 0.2V at 300mA, ensuring high efficiency even at low input-to-output voltageials different. The regulator also includes an enable control feature, allowing for dynamic power management and reduced power consumption during standby modes.

LP3981IMM-2.7 Features

• Output Type: Fixed at 2.7V, ensuring a stable and reliable power supply for sensitive electronics.
• Input Voltage Range: Operates with a maximum input voltage of 6V, providing flexibility in power source selection.
• Output Current: Delivers up to 300mA, suitable for a wide range of low-power applications.
• Low Dropout Voltage: A maximum dropout voltage of 0.2V at 300mA enhances efficiency and reduces power loss.
• Low Quiescent Current: With a quiescent current of 120 µA and a supply current of 210 µA, the regulator minimizes power consumption, making it ideal for battery-powered devices.
• High PSRR: Offers a power supply rejection ratio of 50dB to 55dB across a frequency range of 1kHz to 10kHz, ensuring minimal noise ripple and in the output voltage.
• Protection Features: Includes over-current, over-temperature, and short-circuit protection, safeguarding both the regulator and connected components.
• Enable Control: Features an enable pin for dynamic power management, allowing the regulator to be turned on and off as needed.
• Moisture Sensitivity Level: MSL 1 (Unlimited), making it suitable for a wide range of manufacturing environments.
• Compliance: REACH Unaffected and ECCN EAR99, ensuring compliance with international regulations.
• Packaging: Available in a Tape &el Re (TR) format, facilitating automated assembly processes.

LP3981IMM-2.7 Applications

The LP3981IMM-2.7 is well-suited for a variety of applications requiring a stable and efficient power supply. Its low dropout voltage and low quiescent current make it particularly ideal for battery-powered devices, where power efficiency and longevity are critical. Some specific use cases include:

• Portable Electronics: Ideal for smartphones, tablets, and other handheld devices where space and power efficiency are paramount.
• Wearable: Technology Suitable for fitness trackers, smartwatches, and other wearable devices that require a compact and efficient power solution.
• IoT Devices: Perfect for Internet of Things (IoT) devices that need a reliable power supply with minimal power draw.
• Medical Devices: Suitable for low-power medical devices such as glucose meters and portable ECG monitors, where accuracy and reliability are essential.
• Industrial Sensors: Applicable in industrial applications where low-power sensors and controllers require a stable power source.

Conclusion of LP3981IMM-2.7

The LP3981IMM-2.7 is a versatile and efficient linear voltage regulator designed for applications requiring a stable 2.7V output and up to 300mA of current. Its low dropout voltage, low quiescent current, and high PSRR make it an excellent choice for battery-powered and low-power applications. The inclusion of enable control and comprehensive protection features further enhances its reliability and flexibility. While the product is marked as obsolete, it remains a valuable component for existing designs and legacy systems, ensuring continued performance and support from Texas Instruments.