Texas Instruments

LP2981IM5-3.0

LP2981IM5-3.0 Description

The LP2981IM5-3.0 is a fixed output linear regulator designed by Texas Instruments, offering a robust and efficient power management solution for a variety of electronic applications. This regulator is part of the Power Management Integrated Circuit (PMIC) category and is housed in a compact SOT23-5 package, making it suitable for surface mount applications. Despite being marked as obsolete, the LP2981IM5-3.0 remains a reliable choice for applications requiring a stable 3V output at up to 100mA.

LP2981IM5-3.0 Features

• Output Type: Fixed at 3V, ensuring a stable and consistent power supply.
• Input Voltage Range: Capable of handling input voltages up to 16V, providing flexibility in power source selection.
• Output Current: Delivers a maximum output current of 100mA, suitable for low-power applications.
• Low Dropout Voltage: With a maximum dropout voltage of 0.37V at 100mA, the LP2981IM5-3.0 maintains efficiency even at low input-to-output voltage differentials.
• Low Quiescent Current: Features a low quiescent current of 95µA, minimizing power consumption in standby mode.
• High PSRR: A Power Supply Rejection Ratio (PSRR) of 63dB at 1kHz ensures minimal noise and ripple on the output voltage.
• Control Features: Includes an enable function, allowing for dynamic control of the regulator's operation.
• Protection Features: Over-current, over-temperature, and short-circuit protection ensure reliable operation and protect against common fault conditions.
• Moisture Sensitivity Level: MSL 1 (Unlimited), indicating the device is suitable for a wide range of environmental conditions without special handling requirements.
• Package Type: Supplied in a Tape & Reel (TR) package, facilitating automated assembly processes.

LP2981IM5-3.0 Applications

The LP2981IM5-3.0 is ideal for applications requiring a stable and low-noise power supply. Its compact size and low dropout voltage make it particularly suitable for:

• Battery-powered devices: Where efficient power management and low quiescent current are crucial.
• Portable electronics: Such as handheld devices, sensors, and IoT modules that demand a reliable and stable power source.
• Low-power systems: Including microcontrollers, RF modules, and other sensitive electronic components that require a clean and stable power supply.
• Industrial applications: Where the device's robustness and protection features ensure reliable operation in harsh environments.

Conclusion of LP2981IM5-3.0

The LP2981IM5-3.0 from Texas Instruments is a versatile and reliable linear regulator, offering a fixed 3V output with a maximum current of 100mA. Its low dropout voltage, low quiescent current, and high PSRR make it an excellent choice for low-power and battery-operated applications. The inclusion of enable control and comprehensive protection features further enhances its suitability for a wide range of electronic systems. Despite its obsolete status, the LP2981IM5-3.0 remains a valuable component for designers seeking a compact and efficient power management solution.