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L5975DTR

L5975DTR

Product Overview

  • Category: Integrated Circuit
  • Use: Voltage Regulator
  • Characteristics: High efficiency, low dropout voltage, adjustable output voltage
  • Package: PowerSO-10
  • Essence: Linear voltage regulator with current limit and thermal shutdown protection
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 4.4V to 36V
  • Output Voltage Range: 1.2V to 35V
  • Output Current: Up to 2A
  • Dropout Voltage: 400mV at 2A
  • Quiescent Current: 100µA
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L5975DTR has a total of 10 pins:

  1. VIN: Input voltage pin
  2. GND: Ground pin
  3. VREF: Reference voltage output pin
  4. FB: Feedback pin for adjusting the output voltage
  5. EN: Enable pin for turning the regulator on/off
  6. SS/TR: Soft-start/Tracking pin for controlling the startup behavior
  7. COMP: Compensation pin for stability optimization
  8. VOUT: Output voltage pin
  9. PGND: Power ground pin
  10. BOOT: Bootstrap capacitor connection pin

Functional Features

  • Wide input voltage range allows for versatile applications
  • Adjustable output voltage provides flexibility in various scenarios
  • High efficiency minimizes power dissipation and maximizes battery life
  • Low dropout voltage ensures stable operation even with small input-output differentials
  • Current limit and thermal shutdown protection enhance system reliability
  • Soft-start function prevents excessive inrush current during startup

Advantages and Disadvantages

Advantages: - Wide input voltage range enables compatibility with different power sources - Adjustable output voltage suits a variety of load requirements - High efficiency reduces energy waste and extends battery life - Current limit and thermal shutdown protection enhance system safety

Disadvantages: - Dropout voltage may limit the use in low voltage applications - PowerSO-10 package may require additional space compared to smaller packages

Working Principles

The L5975DTR is a linear voltage regulator that uses a series pass element to regulate the output voltage. It operates by comparing the feedback voltage (FB) with a reference voltage (VREF) and adjusting the pass element accordingly. The enable pin (EN) controls the on/off state of the regulator, while the soft-start/tracking pin (SS/TR) allows for controlled startup behavior. The compensation pin (COMP) ensures stability by optimizing the loop response.

Detailed Application Field Plans

The L5975DTR is suitable for various applications, including but not limited to:

  1. Power supplies for industrial equipment
  2. Automotive electronics
  3. Battery-powered devices
  4. Distributed power systems
  5. Telecom infrastructure
  6. Consumer electronics

Detailed and Complete Alternative Models

  1. LM317: Adjustable positive voltage regulator with similar characteristics
  2. LT1085: Low dropout positive voltage regulator with adjustable output
  3. TPS7A47: Ultra-low noise, high PSRR voltage regulator
  4. LM1117: Fixed output voltage regulator with low dropout voltage

These alternative models offer different features and specifications, providing options based on specific application requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací L5975DTR v technických řešeních

Sure! Here are 10 common questions and answers related to the application of L5975DTR in technical solutions:

  1. Q: What is L5975DTR? A: L5975DTR is a high-efficiency step-down switching regulator IC designed for use in various technical solutions.

  2. Q: What is the input voltage range of L5975DTR? A: The input voltage range of L5975DTR is typically between 4.5V and 36V.

  3. Q: What is the output voltage range of L5975DTR? A: The output voltage range of L5975DTR can be adjusted from 0.6V to 35V.

  4. Q: What is the maximum output current of L5975DTR? A: The maximum output current of L5975DTR is typically 3A.

  5. Q: Is L5975DTR suitable for battery-powered applications? A: Yes, L5975DTR is suitable for battery-powered applications as it has low quiescent current and supports low dropout operation.

  6. Q: Does L5975DTR have built-in protection features? A: Yes, L5975DTR includes built-in protection features such as thermal shutdown, overcurrent protection, and short-circuit protection.

  7. Q: Can L5975DTR operate in a wide temperature range? A: Yes, L5975DTR can operate in a wide temperature range, typically from -40°C to +125°C.

  8. Q: What type of package does L5975DTR come in? A: L5975DTR is available in a PowerSO-10 package, which provides good thermal performance.

  9. Q: Can L5975DTR be used in automotive applications? A: Yes, L5975DTR is suitable for automotive applications as it meets the requirements of the AEC-Q100 standard.

  10. Q: Are there any evaluation boards or reference designs available for L5975DTR? A: Yes, STMicroelectronics provides evaluation boards and reference designs that can help in the application of L5975DTR in various technical solutions.

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