Texas Instruments

LP2985AIM5-1.8

LP2985AIM5-1.8 Description

The LP2985AIM5-1.8 is a linear voltage regulator designed and manufactured by Texas Instruments. This IC is specifically engineered to provide a fixed output voltage of 1.8V with a maximum output current of 150mA. The device is housed in a compact SOT23-5 package, making it ideal for space-constrained applications. With a maximum input voltage of 16V, this regulator is well-suited for a variety of electronic systems that require stable and efficient power regulation.

LP2985AIM5-1.8 Features

• Fixed Output Voltage: The LP2985AIM5-1.8 provides a stable 1.8V output, which is crucial for maintaining consistent performance in electronic devices.
• Low Dropout Voltage: With a maximum dropout voltage of 0.58V at 150mA, this regulator can operate efficiently even when the input voltage is close to the output voltage.
• Low Quiescent Current: The device consumes only 95 µA in quiescent mode, making it energy-efficient and suitable for battery-powered applications.
• PSRR of 45dB: This high power supply rejection ratio at 1kHz ensures minimal noise is introduced into the output, maintaining signal integrity.
• Protection Features: The regulator includes over current, over temperature, and short circuit protection, enhancing the reliability and lifespan of the device.
• REACH Unaffected: Compliant with REACH regulations, ensuring environmental safety and compliance.
• Surface Mount: The device's surface mount design facilitates easy integration into PCB layouts.

LP2985AIM5-1.8 Applications

The LP2985AIM5-1.8 is ideal for applications where a stable and low-noise 1.8V power supply is required. Some specific use cases include:

• Portable Electronics: Due to its low quiescent current, it is perfect for battery-operated devices like smartphones and tablets.
• Industrial Controls: The robust protection features make it suitable for industrial applications where reliability is critical.
• Medical Devices: The stable output and low noise are essential for accurate readings in medical equipment.
• Automotive Systems: The ability to handle a wide input voltage range makes it suitable for automotive electronics.

Conclusion of LP2985AIM5-1.8

While the LP2985AIM5-1.8 is now considered obsolete, it was a high-performance linear voltage regulator that offered a fixed 1.8V output with low dropout, low quiescent current, and robust protection features. Its compact form factor and high PSRR made it a popular choice for a variety of applications, particularly in the portable electronics and industrial sectors. For new designs, it is recommended to consider its modern successors that offer similar performance with additional improvements in efficiency and integration.