Texas Instruments

LP2985AIBL-1.8

LP2985AIBL-1.8 Description

The LP2985AIBL-1.8 is a fixed output linear regulator designed by Texas Instruments, offering a stable 1.8V output voltage with a maximum current capability of 150mA. This device is part of the Power Management Integrated Circuit (PMIC) category and is housed in a surface-mount 5USMD package, making it suitable for compact and efficient power supply designs. Despite its small form factor, the LP2985AIBL-1.8 boasts a robust set of features, including over-current, over-temperature, and short-circuit protection, ensuring reliable operation under various conditions. The regulator operates with a maximum input voltage of 16V and features a low dropout voltage of 0.58V at full load, which enhances its efficiency and makes it ideal for battery-powered applications. The device also includes an enable control feature, allowing for dynamic power management and reduced power consumption during idle states.

LP2985AIBL-1.8 Features

• Fixed Output Voltage: Provides a stable 1.8V output, ensuring consistent power delivery to sensitive electronic components.
• High Input Voltage Range: Capable of handling input voltages up to 16V, making it versatile for a wide range of power sources.
• Low Dropout Voltage: At 0.58V @ 150mA, the regulator maintains high efficiency even when the input voltage is close to the output voltage, which is crucial for battery-operated devices.
• Over-Current and Over-Temperature Protection: Ensures the regulator can handle transient overloads and thermal conditions without damage, enhancing reliability.
• Short-Circuit Protection: Protects against short-circuit conditions, safeguarding both the regulator and the connected circuitry.
• Enable Control Feature: Allows for dynamic power management, enabling the regulator to be turned on or off as needed, which helps in reducing power consumption during idle periods.
• Low Quiescent Current: With a quiescent current of 95 µA, the regulator minimizes power loss during operation, contributing to overall system efficiency.
• High Power Supply Rejection Ratio (PSRR): At 45dB (1kHz), the regulator effectively filters out noise from the input power supply, ensuring clean and stable output voltage.
• Surface-Mount Package: The 5USMD package is suitable for compact designs, allowing for high-density PCB layouts.

LP2985AIBL-1.8 Applications

The LP2985AIBL-1.8 is well-suited for a variety of applications where a stable and efficient power supply is required. Its low dropout voltage and high PSRR make it ideal for battery-powered devices, such as portable electronics, where maintaining efficiency and minimizing power loss are critical. The regulator's fixed output voltage and enable control feature make it suitable for applications requiring precise voltage regulation and dynamic power management, such as microcontrollers, sensors, and communication modules. Additionally, its robust protection features ensure reliable operation in harsh environments, making it a reliable choice for industrial and automotive applications.

Conclusion of LP2985AIBL-1.8

The LP2985AIBL-1.8 from Texas Instruments is a versatile and efficient linear regulator that offers a stable 1.8V output with a maximum current of 150mA. Its low dropout voltage and high PSRR make it an excellent choice for battery-powered and sensitive electronic applications. The inclusion of over-current, over-temperature, and short-circuit protection features ensures reliable operation, while the enable control feature allows for dynamic power management. Despite its small form factor, the regulator provides robust performance and is suitable for a wide range of applications, from portable electronics to industrial systems. Although the product is marked as obsolete, its unique features and performance benefits continue to make it a valuable component in power management designs.