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L5974DTR
Product Overview
Category: Integrated Circuit (IC)
Use: Voltage Regulator
Characteristics: - High efficiency - Low dropout voltage - Adjustable output voltage - Overcurrent protection - Thermal shutdown protection
Package: PowerSO-10
Essence: The L5974DTR is a voltage regulator IC designed to provide a stable and regulated output voltage for various electronic devices.
Packaging/Quantity: The L5974DTR is available in a PowerSO-10 package. It is typically sold in reels of 2500 units.
Specifications
- Input Voltage Range: 4.5V 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
Pin Configuration
The L5974DTR has the following pin configuration:
___________
| |
IN |1 10| OUT
EN |2 9| FB
GND|3 8| COMP
GND|4 7| SS/TR
GND|5 6| VREF
|___________|
Functional Features
- High Efficiency: The L5974DTR utilizes advanced circuitry to achieve high efficiency, minimizing power losses during voltage regulation.
- Low Dropout Voltage: With a low dropout voltage of only 400mV at 2A, the L5974DTR can maintain a stable output voltage even when the input voltage is close to the desired output voltage.
- Adjustable Output Voltage: The output voltage of the L5974DTR can be easily adjusted using external resistors, allowing flexibility in various applications.
- Overcurrent Protection: The IC incorporates overcurrent protection to safeguard against excessive current flow, preventing damage to the device and connected components.
- Thermal Shutdown Protection: In case of excessive temperature rise, the L5974DTR features a thermal shutdown mechanism that disables the regulator until the temperature returns to a safe operating range.
Advantages and Disadvantages
Advantages: - High efficiency leads to reduced power consumption - Adjustable output voltage allows for versatile applications - Overcurrent and thermal shutdown protection enhance reliability and safety
Disadvantages: - Limited output current capacity (up to 2A) - Requires external components for proper operation
Working Principles
The L5974DTR operates as a step-down voltage regulator. It takes an input voltage within the specified range and converts it to a lower, regulated output voltage. This is achieved through a combination of internal control circuitry, power MOSFETs, and feedback mechanisms. The IC continuously monitors the output voltage and adjusts the duty cycle of the internal switching converter to maintain a stable output voltage despite variations in the input voltage or load conditions.
Detailed Application Field Plans
The L5974DTR is suitable for a wide range of applications, including but not limited to: 1. Power supplies for industrial equipment 2. Battery-powered devices 3. Automotive electronics 4. Telecommunications equipment 5. Consumer electronics
Detailed and Complete Alternative Models
- LM317: A popular linear voltage regulator with adjustable output voltage and high current capability.
- LT1084: A low dropout voltage regulator with adjustable output voltage and high accuracy.
- TPS5430: A synchronous buck converter with integrated MOSFETs and adjustable output voltage.
- LM2596: A step-down switching regulator with adjustable output voltage and high efficiency.
- LT1763: A low dropout linear regulator with fixed or adjustable output voltage options.
These alternative models offer similar functionality to the L5974DTR and can be considered based on specific application requirements.
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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací L5974DTR v technických řešeních
Sure! Here are 10 common questions and answers related to the application of L5974DTR in technical solutions:
Q: What is L5974DTR? A: L5974DTR is a high-efficiency step-down switching regulator IC designed for use in various technical applications.
Q: What is the input voltage range of L5974DTR? A: The input voltage range of L5974DTR is typically between 4.5V and 55V.
Q: What is the output voltage range of L5974DTR? A: The output voltage range of L5974DTR can be adjusted from 0.8V to 50V.
Q: What is the maximum output current of L5974DTR? A: The maximum output current of L5974DTR is typically 2A, but it can be increased by using an external power transistor.
Q: Can L5974DTR operate in a wide temperature range? A: Yes, L5974DTR is designed to operate in a wide temperature range, typically from -40°C to 125°C.
Q: Does L5974DTR have built-in protection features? A: Yes, L5974DTR includes various protection features such as thermal shutdown, overcurrent protection, and short-circuit protection.
Q: Can L5974DTR be used in battery-powered applications? A: Yes, L5974DTR can be used in battery-powered applications as it supports low-power operation and has a low quiescent current.
Q: Is L5974DTR suitable for automotive applications? A: Yes, L5974DTR is suitable for automotive applications as it meets the requirements for automotive-grade components.
Q: Can L5974DTR be used in both step-down and step-up applications? A: No, L5974DTR is specifically designed for step-down (buck) applications and cannot be used for step-up (boost) applications.
Q: Are there any application notes or reference designs available for L5974DTR? A: Yes, the manufacturer provides application notes and reference designs that can help with the implementation of L5974DTR in various technical solutions.
Please note that these answers are general and may vary depending on specific design considerations and requirements. It is always recommended to refer to the datasheet and consult with the manufacturer for detailed information and support.