LD2982BM40R

Product Overview

Category

LD2982BM40R 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

LD2982BM40R is available in a small surface-mount DPAK package.

Essence

The essence of LD2982BM40R lies in its ability to provide stable and regulated voltage output for various electronic applications.

Packaging/Quantity

LD2982BM40R is typically packaged in reels, with each reel containing a specific quantity of units. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

• Input Voltage Range: 4.5V to 20V
• Output Voltage: 4.0V
• Dropout Voltage: 0.3V (typical)
• Quiescent Current: 50µA (typical)
• Output Current: Up to 100mA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

LD2982BM40R has three pins:

1. VIN (Input Voltage): This pin is connected to the input voltage source.
2. GND (Ground): This pin is connected to the ground reference.
3. VOUT (Output Voltage): This pin provides the regulated output voltage.

Functional Features

• Low Dropout Voltage: LD2982BM40R exhibits a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• Low Quiescent Current: The device consumes minimal current when in standby mode, reducing power consumption and extending battery life.
• High Output Voltage Accuracy: LD2982BM40R offers high precision in maintaining the desired output voltage, ensuring reliable performance of connected electronic components.
• Thermal Shutdown Protection: The regulator includes a built-in thermal shutdown feature that protects it from overheating, preventing damage to the device and surrounding circuitry.
• Short-Circuit Current Limit: LD2982BM40R incorporates a short-circuit current limit mechanism, safeguarding against excessive current flow during a short circuit event.

Advantages and Disadvantages

Advantages

• Provides stable and regulated voltage output.
• Low dropout voltage ensures efficient regulation.
• Low quiescent current for reduced power consumption.
• High output voltage accuracy for reliable performance.
• Thermal shutdown protection prevents overheating.
• Short-circuit current limit protects against excessive current flow.

Disadvantages

• Limited output current capacity (up to 100mA).
• Requires external components for proper operation.

Working Principles

LD2982BM40R operates based on the principle of linear voltage regulation. It utilizes a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. The device compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain the desired output voltage.

Detailed Application Field Plans

LD2982BM40R finds applications in various electronic devices and systems, including but not limited to: - Battery-powered devices - Portable electronics - Automotive electronics - Industrial control systems - Communication equipment

Detailed and Complete Alternative Models

Some alternative models to LD2982BM40R include: - LM1117-4.0 - LT1761-4.0 - MCP1700-4.0

These models offer similar functionality and specifications, providing alternatives for different design requirements.

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