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L4925
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L4925

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Regulator
  • Characteristics: High precision, low dropout voltage, adjustable output voltage
  • Package: TO-220
  • Essence: Linear voltage regulator
  • Packaging/Quantity: Available in tape and reel packaging, quantity varies based on supplier

Specifications

  • Input Voltage: 4.5V to 26V
  • Output Voltage: Adjustable from 1.2V to 25V
  • Output Current: Up to 1.5A
  • Dropout Voltage: Typically 0.6V at 1A load current
  • Line Regulation: Typically 0.02%/V
  • Load Regulation: Typically 0.04%/A
  • Quiescent Current: Typically 10mA
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L4925 IC has the following pin configuration:

  1. VIN: Input voltage pin
  2. GND: Ground pin
  3. ADJ: Output voltage adjustment pin
  4. VOUT: Output voltage pin

Functional Features

  • High precision voltage regulation
  • Low dropout voltage for efficient power conversion
  • Adjustable output voltage to meet specific requirements
  • Overcurrent and thermal protection
  • Short-circuit protection
  • Fast transient response

Advantages and Disadvantages

Advantages

  • High precision voltage regulation ensures stable output
  • Low dropout voltage minimizes power dissipation
  • Adjustable output voltage provides flexibility
  • Built-in protection features enhance reliability
  • Fast transient response for quick load changes

Disadvantages

  • Limited maximum output current of 1.5A
  • Requires external components for proper operation
  • Higher quiescent current compared to some other voltage regulators

Working Principles

The L4925 is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with a fraction of the output voltage, adjusting the pass transistor accordingly to maintain a stable output. The adjustable output voltage is set using an external resistor connected to the ADJ pin.

Detailed Application Field Plans

The L4925 is commonly used in various applications where precise voltage regulation is required. Some typical application fields include:

  1. Power supplies for microcontrollers and digital circuits
  2. Battery-powered devices
  3. Automotive electronics
  4. Industrial control systems
  5. Audio amplifiers

Detailed and Complete Alternative Models

  • LM317: Adjustable positive voltage regulator with similar specifications
  • LM1117: Low dropout voltage regulator with fixed output voltage options
  • LT1086: High current, adjustable voltage regulator with low dropout voltage

These alternative models offer similar functionality and can be considered as alternatives to the L4925 based on specific requirements.

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技術ソリューションにおける L4925 の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of L4925 in technical solutions:

  1. Q: What is L4925? A: L4925 is a voltage regulator IC (integrated circuit) commonly used in technical solutions to regulate and stabilize voltage levels.

  2. Q: What is the input voltage range for L4925? A: The input voltage range for L4925 is typically between 4.5V and 40V.

  3. Q: What is the output voltage range for L4925? A: The output voltage range for L4925 can be adjusted from 1.25V to 37V using external resistors.

  4. Q: What is the maximum output current that L4925 can handle? A: L4925 can handle a maximum output current of up to 1.5A.

  5. Q: Is L4925 suitable for low-power applications? A: Yes, L4925 is suitable for low-power applications as it has a low quiescent current and standby current consumption.

  6. Q: Can L4925 handle high-temperature environments? A: Yes, L4925 is designed to operate reliably in high-temperature environments, with a maximum junction temperature of 150°C.

  7. Q: Does L4925 have built-in protection features? A: Yes, L4925 includes built-in protection features such as thermal shutdown, current limiting, and short-circuit protection.

  8. Q: Can L4925 be used in battery-powered applications? A: Yes, L4925 can be used in battery-powered applications as it has a wide input voltage range and low power consumption.

  9. Q: Is L4925 suitable for both step-up and step-down voltage regulation? A: Yes, L4925 can be used for both step-up and step-down voltage regulation by adjusting the external resistors.

  10. Q: Are there any application notes or reference designs available for L4925? A: Yes, the manufacturer of L4925 provides application notes and reference designs that can help in implementing the IC effectively in various technical solutions.

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