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L5974ADTR

L5974ADTR

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Regulator
  • Characteristics: High efficiency, low dropout voltage, adjustable output voltage, thermal shutdown protection
  • Package: PowerSO-10 package
  • Essence: Monolithic step-down switching regulator
  • Packaging/Quantity: Tape and reel packaging, 2500 units per reel

Specifications

  • Input Voltage Range: 4.5V to 36V
  • Output Voltage Range: 1.2V to 35V
  • Maximum Output Current: 2A
  • Dropout Voltage: 400mV at 2A
  • Switching Frequency: 200kHz
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L5974ADTR has a total of 10 pins:

  1. VIN: Input voltage pin
  2. GND: Ground pin
  3. COMP: Compensation pin for feedback control loop
  4. FB: Feedback pin for setting the output voltage
  5. VREF: Reference voltage output pin
  6. EN: Enable pin for turning the regulator on/off
  7. SS/TR: Soft-start/Tracking pin for controlling the startup behavior
  8. PGND: Power ground pin
  9. SW: Switching node pin
  10. VOUT: Output voltage pin

Functional Features

  • Wide input voltage range allows for versatile applications
  • Adjustable output voltage provides flexibility in system design
  • High efficiency ensures minimal power loss
  • Thermal shutdown protection prevents overheating and damage
  • Soft-start feature enables smooth startup and reduces inrush current

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings - Low dropout voltage minimizes power dissipation - Adjustable output voltage accommodates various requirements - Thermal shutdown protection enhances system reliability

Disadvantages: - Switching frequency may cause electromagnetic interference - Requires external components for proper operation - Limited maximum output current of 2A

Working Principles

The L5974ADTR is a monolithic step-down switching regulator that converts a higher input voltage to a lower output voltage. It utilizes a pulse-width modulation (PWM) control scheme to regulate the output voltage. The internal power MOSFET switch and synchronous rectifier ensure high efficiency.

When the input voltage is applied, the regulator starts operating and delivers a stable output voltage based on the feedback received from the FB pin. The COMP pin allows for compensation adjustments to optimize stability. The EN pin controls the regulator's on/off state, while the SS/TR pin enables soft-start functionality.

Detailed Application Field Plans

The L5974ADTR is commonly used in various applications, including:

  1. Power supplies for industrial equipment
  2. Automotive electronics
  3. Telecommunications systems
  4. Consumer electronics
  5. LED lighting systems

Its wide input voltage range, adjustable output voltage, and high efficiency make it suitable for diverse application scenarios.

Detailed and Complete Alternative Models

  1. LM2576-ADJ: Adjustable voltage regulator with similar specifications
  2. LT1084CP-ADJ: High current adjustable linear regulator
  3. TPS5430-ADJ: Wide input voltage range, adjustable buck converter
  4. LM2596S-ADJ: Step-down switching regulator with adjustable output
  5. ADP2303-ADJ: Synchronous buck regulator with adjustable output

These alternative models offer similar functionality and can be considered as substitutes for the L5974ADTR in different applications.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van L5974ADTR in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of L5974ADTR in technical solutions:

  1. Q: What is L5974ADTR? A: L5974ADTR 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 L5974ADTR? A: The input voltage range of L5974ADTR is typically between 4.5V and 36V.

  3. Q: What is the output voltage range of L5974ADTR? A: The output voltage range of L5974ADTR can be adjusted from 0.6V to 28V.

  4. Q: What is the maximum output current of L5974ADTR? A: The maximum output current of L5974ADTR is 2A.

  5. Q: Can L5974ADTR operate in a wide temperature range? A: Yes, L5974ADTR is designed to operate in a wide temperature range, typically from -40°C to 125°C.

  6. Q: Does L5974ADTR have built-in protection features? A: Yes, L5974ADTR includes various protection features such as thermal shutdown, overcurrent protection, and short-circuit protection.

  7. Q: Is L5974ADTR suitable for battery-powered applications? A: Yes, L5974ADTR is suitable for battery-powered applications due to its low quiescent current and high efficiency.

  8. Q: Can L5974ADTR be used in automotive applications? A: Yes, L5974ADTR is automotive-grade and can be used in automotive applications that require high reliability.

  9. Q: What type of package does L5974ADTR come in? A: L5974ADTR is available in a PowerSO-10 package, which provides good thermal performance.

  10. Q: Are there any application notes or reference designs available for L5974ADTR? A: Yes, the manufacturer provides application notes and reference designs that can help with the implementation of L5974ADTR in various technical solutions.

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