LD2982BM47R

Product Overview

Category

LD2982BM47R belongs to the category of voltage regulators.

Use

It is primarily used for regulating voltage in electronic circuits.

Characteristics

• Low dropout voltage
• Low quiescent current
• High output voltage accuracy
• Thermal shutdown protection
• Short-circuit current limit

Package

LD2982BM47R comes in a small package, typically a surface-mount SOT-23-5 package.

Essence

The essence of LD2982BM47R lies in its ability to provide stable and regulated voltage output for various electronic applications.

Packaging/Quantity

LD2982BM47R is usually packaged in reels or tubes, with a quantity of 3000 units per reel or tube.

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage: 4.7V
• Dropout Voltage: 400mV (typical)
• Quiescent Current: 50µA (typical)
• Output Current: Up to 100mA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

1. GND (Ground)
2. Vout (Output Voltage)
3. Vin (Input Voltage)
4. NC (No Connection)
5. Enable (Shutdown Control)

Functional Features

• Low dropout voltage ensures efficient regulation even when the input voltage is close to the desired output voltage.
• Low quiescent current minimizes power consumption during standby or idle mode.
• High output voltage accuracy provides precise voltage regulation for sensitive electronic components.
• Thermal shutdown protection prevents damage due to excessive temperature.
• Short-circuit current limit protects the regulator and connected devices from excessive current flow.

Advantages and Disadvantages

Advantages

• Compact size and easy integration into various circuit designs.
• Wide input voltage range allows for flexibility in different applications.
• Excellent voltage regulation performance ensures stable operation of electronic devices.
• Thermal shutdown protection enhances reliability and safety.

Disadvantages

• Limited output current capacity may restrict its use in high-power applications.
• Dropout voltage may cause a slight decrease in efficiency compared to other regulators.

Working Principles

LD2982BM47R operates based on the principle of linear voltage regulation. It uses a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. The internal circuitry monitors the input and output voltages, continuously adjusting the pass transistor to maintain a constant output voltage.

Detailed Application Field Plans

LD2982BM47R finds applications in various electronic systems that require stable and regulated voltage supply. Some common application fields include:

1. Battery-powered devices: LD2982BM47R can be used to regulate the voltage supplied to microcontrollers, sensors, and other low-power components in portable devices.
2. Automotive electronics: It can provide stable voltage for automotive control units, infotainment systems, and lighting modules.
3. Industrial automation: LD2982BM47R is suitable for powering sensors, actuators, and control circuits in industrial automation systems.
4. Communication equipment: It can be used in routers, switches, and other network devices to ensure reliable voltage supply.

Detailed and Complete Alternative Models

1. LD2981BM33R: Regulator with an output voltage of 3.3V.
2. LD2985BM50R: Regulator with an output voltage of 5.0V.
3. LD2980BM25R: Regulator with an output voltage of 2.5V.

These alternative models offer different output voltage options while sharing similar characteristics and package types as LD2982BM47R.

In conclusion, LD2982BM47R is a voltage regulator that provides stable and regulated voltage output for various electronic applications. Its low dropout voltage, low quiescent current, and high output voltage accuracy make it suitable for a wide range of devices. However, its limited output current capacity and slightly reduced efficiency may be considered as disadvantages in certain applications.