Product Overview: LP2981IM5-3.1/NOPB

The LP2981IM5-3.1/NOPB is a high-performance, low-dropout regulator (LDO) from Texas Instruments, designed to provide a stable and reliable power supply for a wide range of applications. This micro-power device is capable of delivering a continuous output current of up to 100 mA with an input voltage range from 2.5V to 16V.

Key Features

• Output Voltage: The device provides a fixed output voltage of 3.1V, which is ideal for powering 3V logic in portable devices.
• Low Dropout: The LP2981IM5-3.1/NOPB boasts an extremely low dropout voltage, typically only 280 mV at full load, which enhances efficiency and allows operation over a wider range of input voltages.
• High Accuracy: Output voltage accuracy is maintained within ±0.5% at room temperature and ±1% over the full operating temperature range, ensuring reliable performance.
• Low Quiescent Current: The device features a low quiescent current of typically 850 µA, which drops to less than 1 µA in shutdown mode, making it suitable for battery-powered applications.
• Thermal Protection: It includes thermal shutdown and current limit features to protect the device under abnormal operating conditions.
• Stable with Low ESR Capacitors: The LDO is stable with ceramic capacitors, which have lower equivalent series resistance (ESR) than tantalum capacitors, thus providing better transient response and reliability.

Applications

The LP2981IM5-3.1/NOPB is versatile and can be used in various applications, including:

• Cellular phones
• Handheld instruments
• Portable electronics
• Wireless devices
• Personal digital assistants (PDAs)

Package and Quality

This LDO comes in a small SOT-23-5 package, which is ideal for space-constrained applications. The NOPB designation indicates that the product is lead-free and RoHS compliant, aligning with environmental standards and regulations. Texas Instruments is known for its commitment to quality, and the LP2981IM5-3.1/NOPB is no exception, ensuring reliable performance for critical electronic systems.