Texas Instruments

LP3985IM5X-4.7

LP3985IM5X-4.7 Description

The LP3985IM5X-4.7 is a fixed output linear regulator designed by Texas Instruments, offering a regulated output voltage of 4.7V with a maximum output current of 150mA. This device 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 its small form factor, the LP3985IM5X-4.7 delivers robust performance with a maximum input voltage of 6V and a low dropout voltage of 0.1V at 150mA. It also features low quiescent current (150 µA) and low supply current (250 µA), making it highly efficient for battery-operated devices. The regulator includes control features such as an enable pin and protection features like over-current, over-temperature, and short-circuit protection. While the product is currently marked as obsolete, it remains unaffected by REACH regulations and is available in a tape and reel package.

LP3985IM5X-4.7 Features

• Fixed Output Voltage: The LP3985IM5X-4.7 provides a stable 4.7V output, ensuring consistent power delivery to sensitive electronic components.
• Low Dropout Voltage: With a maximum dropout voltage of 0.1V at 150mA, this regulator can maintain regulation even when the input voltage is close to the output voltage, making it ideal for applications with limited headroom.
• Low Quiescent Current: The 150 µA quiescent current ensures minimal power consumption in standby mode, extending battery life in portable devices.
• Enable Control: The enable feature allows for dynamic control of the regulator, enabling power savings and efficient power management.
• Protection Features: Over-current, over-temperature, and short-circuit protection ensure the device's reliability and longevity, safeguarding against common failure modes.
• Compact Packaging: The SOT23-5 package is ideal for space-constrained designs, making it suitable for a wide range of applications from consumer electronics to industrial systems.

LP3985IM5X-4.7 Applications

The LP3985IM5X-4.7 is well-suited for a variety of applications that require a stable and efficient power supply. Its low dropout voltage and compact size make it particularly useful in battery-operated devices where space and power efficiency are critical. Some specific use cases include:

• Portable Electronics: Ideal for smartphones, tablets, and other portable devices that require a reliable power supply with minimal power consumption.
• Wearable Devices: The low quiescent current and small form factor make it suitable for wearable technology where battery life and size are significant considerations.
• Industrial Systems: The robust protection features and stable output voltage ensure reliable operation in industrial applications, such as sensors and control modules.
• Medical Devices: The LP3985IM5X-4.7 can be used in medical devices that require precise power regulation and low power consumption, contributing to longer battery life and improved performance.

Conclusion of LP3985IM5X-4.7

The LP3985IM5X-4.7 from Texas Instruments is a versatile and efficient linear regulator that offers a stable 4.7V output with a maximum current of 150mA. Its low dropout voltage, low quiescent current, and compact SOT23-5 package make it an excellent choice for a wide range of applications, particularly in portable and wearable devices. The inclusion of enable control and comprehensive protection features further enhances its reliability and versatility. Despite being marked as obsolete, the LP3985IM5X-4.7 remains a reliable option for designers seeking a high-performance, low-power solution in their power management designs.