The LP3990MFX-1.2 is a high-performance, low-dropout linear regulator designed by Texas Instruments to deliver a fixed output voltage of 1.2V. This regulator is an excellent choice for portable applications due to its ultra-low noise output, very low dropout voltage, and low quiescent current. The LP3990MFX-1.2 is part of Texas Instruments' extensive range of power management integrated circuits, providing reliable and efficient solutions for a variety of electronic devices.

Key Features

• Output Voltage: Fixed 1.2V with high accuracy
• Output Current: Capable of delivering up to 150mA
• Dropout Voltage: Very low dropout (VDO) of typically 280mV at 150mA load, enhancing efficiency
• Noise Performance: Ultra-low output noise, making it suitable for RF and precision analog circuits
• Quiescent Current: Low Iq of typically 30µA, increasing battery life in portable applications
• Stability: Stable with ceramic capacitors as low as 1µF, providing design flexibility
• Form Factor: Available in a small SOT-23 package, ideal for space-constrained applications
• Thermal Protection: Built-in thermal shutdown and short-circuit protection features enhance device reliability

Applications

The LP3990MFX-1.2 is suitable for a variety of applications that require a stable and clean power supply. It is particularly useful in:

• Mobile phones and PDAs
• Wireless LAN and Bluetooth devices
• Portable media players
• Digital cameras and audio devices
• GPS receivers
• Other battery-powered electronics

Ordering Information

The LP3990MFX-1.2 is available for order under the part number LP3990MFX-1.2/NOPB, indicating that it is provided in a lead-free, environmentally friendly package. For detailed specifications, application notes, and additional resources, please visit the Texas Instruments official website or contact their support team.