LD3980PU18R

Product Overview

Category

LD3980PU18R belongs to the category of voltage regulators.

Use

It is primarily used to regulate and stabilize voltage in electronic circuits.

Characteristics

• LD3980PU18R is a low dropout (LDO) voltage regulator.
• It operates with an input voltage range of 2.5V to 6V.
• The output voltage is fixed at 1.8V.
• It has a maximum output current of 150mA.
• LD3980PU18R offers high accuracy and low noise performance.
• It provides excellent line and load regulation.

Package

The LD3980PU18R comes in a small surface-mount package, typically SOT-23-5.

Essence

The essence of LD3980PU18R lies in its ability to provide a stable and regulated output voltage for various electronic applications.

Packaging/Quantity

LD3980PU18R is commonly available in reels or tape packaging, with a quantity of 3000 units per reel.

Specifications

• Input Voltage Range: 2.5V - 6V
• Output Voltage: 1.8V
• Maximum Output Current: 150mA
• Dropout Voltage: 200mV @ 100mA
• Line Regulation: ±0.05%
• Load Regulation: ±0.1%
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD3980PU18R has five pins arranged as follows:

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Pin 1: Input Voltage (VIN) Pin 2: Ground (GND) Pin 3: Enable (EN) Pin 4: Bypass Capacitor (BP) Pin 5: Output Voltage (VOUT)

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output differentials.
• Excellent line and load regulation provide stable output voltage under varying conditions.
• Low quiescent current minimizes power consumption in standby or idle modes.
• Thermal shutdown protection prevents damage due to excessive temperature.
• Short-circuit current limit protects the regulator and connected components.

Advantages and Disadvantages

Advantages

• High accuracy and low noise performance.
• Wide input voltage range allows flexibility in various applications.
• Small package size enables space-saving designs.
• Efficient voltage regulation for improved circuit performance.

Disadvantages

• Limited maximum output current may restrict usage in high-power applications.
• Fixed output voltage limits versatility in certain projects.

Working Principles

LD3980PU18R operates based on the principle of a linear voltage regulator. It uses a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. The internal feedback mechanism continuously monitors the output voltage and adjusts the pass transistor accordingly to maintain a stable output.

Detailed Application Field Plans

LD3980PU18R finds application in various electronic devices, including but not limited to: - Battery-powered portable devices - Wireless communication systems - Microcontrollers and digital processors - Audio amplifiers and signal processing circuits - Industrial control systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to LD3980PU18R are: - LM1117-1.8 - MCP1702-1802E/TO - TS2950CT-1.8

These alternatives can be considered based on specific requirements and availability.

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