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LP2985IBL-1.8

LP2985IBL-1.8 Description

The LP2985IBL-1.8 is a linear voltage regulator designed by National Semiconductor, known for its high performance and reliability. This IC is a fixed-output regulator with a nominal output voltage of 1.8V and a maximum output current of 150mA. It is optimized for low dropout voltage, ensuring efficient operation even at low input-to-output voltage differentials. The regulator features a maximum dropout voltage of 0.58V at 150mA, making it suitable for applications where input voltage is close to the desired output voltage.

LP2985IBL-1.8 Features

• Low Quiescent Current: The LP2985IBL-1.8 boasts a low quiescent current of 95 µA, which is crucial for battery-powered devices where minimizing power consumption is essential.
• High PSRR: With a power supply rejection ratio (PSRR) of 45dB at 1kHz, the regulator effectively filters out noise from the input supply, ensuring a clean and stable output voltage.
• Fixed Output Voltage: The regulator provides a fixed output voltage of 1.8V, eliminating the need for external resistors to set the output voltage, simplifying design and reducing component count.
• Enable Control Feature: The enable feature allows for dynamic control of the regulator's operation, enabling power savings and controlled startup/shutdown sequences.
• Protection Features: The LP2985IBL-1.8 includes over-current, over-temperature, and short-circuit protection, safeguarding the regulator and downstream components from potential damage.
• Surface Mount Packaging: The regulator is available in a surface-mount package, facilitating easy integration into compact and high-density PCB designs.
• Wide Input Voltage Range: The regulator can operate with input voltages up to 16V, providing flexibility in various power supply scenarios.

LP2985IBL-1.8 Applications

The LP2985IBL-1.8 is ideal for a variety of applications where a stable and efficient power supply is required. Its low dropout voltage and low quiescent current make it particularly suitable for battery-powered devices, such as portable electronics, handheld devices, and wireless sensors. The regulator's fixed output voltage and enable feature also make it a good fit for applications requiring a reliable and controlled power source, such as microcontroller power supplies, embedded systems, and IoT devices.

Conclusion of LP2985IBL-1.8

The LP2985IBL-1.8 is a high-performance linear voltage regulator that offers a combination of low dropout voltage, low quiescent current, and robust protection features. Its fixed output voltage and enable control make it a versatile and reliable choice for a wide range of applications. Despite being marked as obsolete, the LP2985IBL-1.8 remains a valuable component for designers seeking a compact and efficient power solution.