LP3984IMFX-3.1/NOPB

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The LP3984IMFX-3.1/NOPB is a highly integrated power management device developed by Texas Instruments. It belongs to the family of voltage regulators of linear regulators.

Overview

The LP3984IMFX-3.1/NOPB is optimized for applications requiring precise power management, such as in small-sized embedded systems like portable industrial, battery powered, and automotive electronics. It is designed for high performance, high efficiency, and high integration, and offers the best combination of size and performance for those applications.

This device integrates several components into a single package instead of creating an independent voltage regulator circuit when multiple voltage levels are needed. It provides four voltage outputs (VOUT1–VOUT4) that can deliver up to 1.5A each with a maximum output voltage of 20V. The output voltage can be adjusted over a wide range, from -1.1V to VIN (Input voltage).

Features of LP3984IMFX-3.1/NOPB

The LP3984IMFX-3.1/NOPB comes with several features such as undervoltage lock-out (UVLO), current limit (CLA), and thermal protection to protect the device. This device also includes up to two low quiescent current (LQC) linear regulators configured as either single-output or dual output regulators with adjustable output voltage.

• Under voltage Lock-Out: This feature helps the device to avoid damage from too low input voltage conditions.
• Current limit: This feature help to prevent the regulator from exceeding the current limit.
• Thermal protection:This feature protect the device from high temperature conditions.
• Low quiescent current: This feature helps to reduce power consumption and improve power efficiency.

Applications of LP3984IMFX-3.1/NOPB

The LP3984IMFX-3.1/NOPB is suitable for various applications such as automotive, industrial, and consumer-grade electronics, where high output current with precise voltage regulation and efficient power management are needed. It is also suitable for usage in mobile electronic devices, laptops, and portable electronic devices such as smart phones, tablets and wearable devices.

Other applications include USB power delivery, point-of-load (POL) supplies, power over Ethernet (POE), computer terminals, routers, LEDs, and OLEDs.

Working Principle

The working principle of the LP3984IMFX-3.1/NOPB is based on the use of a high-efficiency synchronous step-down converter that is designed to deliver a precise output voltage with low ripple and noise. This device is capable of delivering up to 1.5A output current with a 0.5V to 20V output voltage range.

The power management device utilizes a synchronous buck converter along with a control loop that adjusts the duty cycle of the switching voltage regulator in response to changes in the output voltage. The LM3984IMFX-3.1/NOPB has a constant frequency of 300 kHz which is set by an internal oscillator and is adjustable by an external resistor.

The integrated LDO regulator adjusts the output voltage by using a feedback loop that regulates the output voltage based on the output voltage set point programmed by a resistive voltage divider network. This voltage is compared to the voltage feedback from the output of the regulator. When the voltage feedback rises above the voltage set point, the LDO output voltage is reduced. Conversely, when the voltage feedback drops below the voltage set point, the LDO output voltage is increased.

Benefits of LP3984IMFX-3.1/NOPB

• Integrated regulation and protection circuitry for optimal power management
• Precise output voltage with low ripple and noise
• High efficiency with synchronous step-down converter
• Wide output voltage range with up to 1.5A
• Small 7x7x1mm package

Summary

The LP3984IMFX-3.1/NOPB is a highly integrated power management device developed by Texas Instruments. This device integrates several components into a single package instead of creating an independent voltage regulator circuit when multiple voltage levels are needed. It provides four voltage outputs (VOUT1–VOUT4) that can deliver up to 1.5A each with a maximum output voltage of 20V. It is designed for high performance, high efficiency, and high integration and comes with wide range of features like UVLO, CL, and thermal protection. This device is suitable for various applications such as automotive, industrial, and consumer-grade electronics, where high output current with precise voltage regulation and efficient power management are needed. Its working principle is based on the use of a high-efficiency synchronous step-down converter that is designed to deliver a precise output voltage with low ripple and noise.

The specific data is subject to PDF, and the above content is for reference