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LD2982BM18R
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LD2982BM18R

Product Overview

Category

The LD2982BM18R 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

The LD2982BM18R comes in a small outline package (SOT-23) which is suitable for surface mount applications.

Essence

The essence of LD2982BM18R lies in its ability to provide stable and regulated voltage output, ensuring proper functioning of electronic devices.

Packaging/Quantity

The LD2982BM18R is typically packaged in reels or tape and reel packaging. The quantity per reel varies depending on the manufacturer.

Specifications

  • Input Voltage Range: 2.5V to 16V
  • Output Voltage: 1.8V
  • Dropout Voltage: 300mV at 100mA
  • Quiescent Current: 50µA
  • Output Current: Up to 100mA
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD2982BM18R has three pins:

  1. VIN (Pin 1): Input voltage pin.
  2. GND (Pin 2): Ground reference pin.
  3. VOUT (Pin 3): Regulated output voltage pin.

Functional Features

  • Low Dropout Voltage: The LD2982BM18R exhibits low dropout voltage, enabling it to regulate voltage even when the input voltage is close to the desired output voltage.
  • Low Quiescent Current: It consumes minimal current when in standby mode, reducing power consumption.
  • High Output Voltage Accuracy: The LD2982BM18R provides precise and accurate output voltage, ensuring stable operation of connected devices.
  • Thermal Shutdown Protection: It incorporates a thermal shutdown mechanism that protects the regulator from overheating, preventing damage to the device.
  • Short-Circuit Current Limit: The LD2982BM18R has built-in protection against excessive current flow in case of a short circuit, safeguarding the connected circuitry.

Advantages and Disadvantages

Advantages

  • Reliable voltage regulation
  • Low power consumption
  • Compact package size
  • Wide operating temperature range

Disadvantages

  • Limited output current capacity (up to 100mA)
  • Requires external components for stability

Working Principles

The LD2982BM18R is a linear voltage regulator that operates by maintaining a constant voltage difference between its input and output pins. It utilizes a pass transistor to regulate the output voltage based on the feedback received from a voltage reference circuit. By adjusting the resistance within the regulator, it compensates for any variations in the input voltage, ensuring a stable output voltage.

Detailed Application Field Plans

The LD2982BM18R finds applications in various electronic devices and systems, including but not limited to: - Battery-powered devices - Portable consumer electronics - Automotive electronics - Industrial control systems - Medical equipment

Detailed and Complete Alternative Models

  1. LM1117-1.8: A popular alternative with similar specifications and pin configuration.
  2. LP2985-1.8: Another alternative offering low dropout voltage and high output voltage accuracy.
  3. MCP1701-1802E/TO: An alternative with a wide input voltage range and low quiescent current.

These alternative models provide comparable performance and can be used as substitutes for LD2982BM18R in various applications.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací LD2982BM18R v technických řešeních

Sure! Here are 10 common questions and answers related to the application of LD2982BM18R in technical solutions:

  1. Q: What is LD2982BM18R? A: LD2982BM18R is a low dropout voltage regulator IC that provides a fixed output voltage of 1.8V.

  2. Q: What is the maximum input voltage for LD2982BM18R? A: The maximum input voltage for LD2982BM18R is typically 16V.

  3. Q: What is the dropout voltage of LD2982BM18R? A: The dropout voltage of LD2982BM18R is typically around 300mV at a load current of 100mA.

  4. Q: Can LD2982BM18R handle high currents? A: No, LD2982BM18R is designed for low current applications. It can typically handle a maximum load current of 50mA.

  5. Q: Is LD2982BM18R suitable for battery-powered applications? A: Yes, LD2982BM18R is suitable for battery-powered applications as it has a low quiescent current and low dropout voltage.

  6. Q: Does LD2982BM18R have built-in thermal protection? A: Yes, LD2982BM18R has built-in thermal shutdown protection to prevent overheating.

  7. Q: Can LD2982BM18R be used in automotive applications? A: Yes, LD2982BM18R is automotive-grade and can be used in automotive applications within its specified operating conditions.

  8. Q: What is the package type of LD2982BM18R? A: LD2982BM18R is available in a small SOT-23 package.

  9. Q: Does LD2982BM18R require external capacitors for stability? A: Yes, LD2982BM18R requires an input and output capacitor for stability. The datasheet provides recommended values.

  10. Q: Can LD2982BM18R be used in adjustable voltage applications? A: No, LD2982BM18R provides a fixed output voltage of 1.8V and cannot be adjusted.

Please note that these answers are general and may vary depending on the specific datasheet and application requirements.