STMicroelectronics
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L5987TR
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L5987TR

Product Overview

Category

L5987TR belongs to the category of voltage regulators.

Use

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

Characteristics

  • High precision voltage regulation
  • Low dropout voltage
  • Wide input voltage range
  • Thermal shutdown protection
  • Overcurrent protection

Package

L5987TR comes in a compact surface mount package.

Essence

The essence of L5987TR lies in its ability to provide stable and regulated voltage output for various electronic applications.

Packaging/Quantity

L5987TR is typically packaged in reels and each reel contains a specific quantity of units, usually 250 or 1000.

Specifications

  • Input Voltage Range: 2.5V to 18V
  • Output Voltage Range: 1.2V to 15V
  • Dropout Voltage: 300mV (typical)
  • Maximum Output Current: 3A
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

L5987TR has the following pin configuration:

  1. VIN: Input voltage pin
  2. GND: Ground pin
  3. VOUT: Output voltage pin
  4. ADJ: Adjustable pin for setting output voltage

Functional Features

  • High voltage regulation accuracy
  • Fast transient response
  • Low quiescent current
  • Short-circuit protection
  • Reverse polarity protection

Advantages and Disadvantages

Advantages

  • Wide input voltage range allows for versatile applications
  • Low dropout voltage minimizes power dissipation
  • Thermal shutdown and overcurrent protection enhance reliability
  • Compact package size saves board space

Disadvantages

  • Limited maximum output current may not be suitable for high-power applications
  • Requires external components for proper operation

Working Principles

L5987TR operates based on the principle of feedback control. It compares the output voltage with a reference voltage and adjusts the internal circuitry to maintain a stable output voltage despite changes in input voltage or load conditions.

Detailed Application Field Plans

L5987TR finds applications in various electronic systems, including but not limited to: - Battery-powered devices - Portable consumer electronics - Automotive electronics - Industrial control systems - Telecommunications equipment

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to L5987TR are: - LM317: Adjustable voltage regulator with higher maximum output current - LT1084: Low dropout voltage regulator with adjustable output voltage - TPS7A4700: High-precision voltage regulator with ultra-low noise performance

These alternative models offer different features and specifications, allowing users to choose the most suitable option for their specific requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací L5987TR v technických řešeních

Sure! Here are 10 common questions and answers related to the application of L5987TR in technical solutions:

  1. Q: What is L5987TR? A: L5987TR is a specific model of voltage regulator used in technical solutions.

  2. Q: What is the input voltage range for L5987TR? A: The input voltage range for L5987TR is typically between 4.5V and 60V.

  3. Q: What is the output voltage range for L5987TR? A: The output voltage range for L5987TR can be adjusted from 0.8V to 55V.

  4. Q: What is the maximum output current of L5987TR? A: The maximum output current of L5987TR is typically around 3A.

  5. Q: Can L5987TR handle high temperatures? A: Yes, L5987TR is designed to operate at high temperatures, typically up to 150°C.

  6. Q: Is L5987TR suitable for automotive applications? A: Yes, L5987TR is commonly used in automotive applications due to its robustness and reliability.

  7. Q: Does L5987TR have built-in protection features? A: Yes, L5987TR includes various protection features such as over-temperature, over-current, and short-circuit protection.

  8. Q: Can L5987TR be used in both step-up and step-down configurations? A: Yes, L5987TR can be used as a step-up (boost) or step-down (buck) voltage regulator depending on the application requirements.

  9. Q: What is the efficiency of L5987TR? A: The efficiency of L5987TR can reach up to 95% under certain operating conditions.

  10. Q: Are there any application notes or reference designs available for L5987TR? A: Yes, the manufacturer of L5987TR provides application notes and reference designs to assist in the implementation of this voltage regulator in various technical solutions.

Please note that the specific details mentioned above may vary depending on the manufacturer's specifications and datasheet for L5987TR.