Texas Instruments

LP2985IM5X-4.5

LP2985IM5X-4.5 Description

The LP2985IM5X-4.5 is a fixed-output linear voltage regulator designed by Texas Instruments, offering a regulated output voltage of 4.5V with a maximum output current of 150mA. This regulator is housed in a compact SOT23-5 package, making it suitable for surface-mount applications. It features a maximum input voltage of 16V and a low dropout voltage of 0.58V at full load, ensuring efficient operation even with minimal input-to-output voltage differences. The LP2985IM5X-4.5 also includes protection features such as over-current, over-temperature, and short-circuit protection, enhancing its reliability and robustness. Despite its small size, it maintains a low quiescent current of 95 µA and a supply current of 2.5 mA, making it ideal for low-power applications. The regulator also offers a high power supply rejection ratio (PSRR) of 45dB at 1kHz, minimizing the impact of input noise on the output voltage. Although the product is marked as obsolete, it remains unaffected by REACH regulations and is available in tape and reel packaging for easy handling and integration.

LP2985IM5X-4.5 Features

• Fixed Output Voltage: Provides a stable 4.5V output, ensuring consistent performance in various applications.
• Low Dropout Voltage: With a maximum dropout voltage of 0.58V at 150mA, it maintains high efficiency even with small input-to-output voltage differences.
• Protection Features: Includes over-current, over-temperature, and short-circuit protection to safeguard the regulator and connected components.
• Low Quiescent Current: Consumes only 95 µA in quiescent mode, making it suitable for battery-powered and low-power applications.
• High PSRR: Achieves a power supply rejection ratio of 45dB at 1kHz, reducing the impact of input noise on the output voltage.
• Enable Control: Features an enable pin for easy control and power management.
• Compact Packaging: Housed in a SOT23-5 package, it is ideal for space-constrained designs.
• Surface Mount: Suitable for automated assembly processes, enhancing manufacturing efficiency.

LP2985IM5X-4.5 Applications

The LP2985IM5X-4.5 is ideal for a variety of applications where a stable 4.5V supply and low power consumption are critical. Some specific use cases include:

• Battery-Powered Devices: Its low quiescent current and low dropout voltage make it suitable for portable devices and battery-operated systems.
• Consumer Electronics: Ideal for powering microcontrollers, sensors, and other low-power components in consumer electronics.
• Industrial Control Systems: Provides a reliable power source for control circuits and low-power peripherals in industrial environments.
• Telecommunications: Suitable for powering low-power modules and components in telecommunication equipment.
• Medical Devices: Can be used in medical devices where stable power supply and low power consumption are essential.

Conclusion of LP2985IM5X-4.5

The LP2985IM5X-4.5 is a versatile and reliable linear voltage regulator that offers a stable 4.5V output with a maximum current of 150mA. Its low dropout voltage, low quiescent current, and high PSRR make it an excellent choice for low-power applications. The inclusion of over-current, over-temperature, and short-circuit protection ensures robust performance and reliability. Despite being marked as obsolete, its REACH unaffected status and availability in tape and reel packaging make it a viable option for various applications. The LP2985IM5X-4.5 is particularly well-suited for battery-powered devices, consumer electronics, industrial control systems, telecommunications, and medical devices, where stable power supply and efficiency are paramount.