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L4975A
Product Overview
Category: Voltage Regulator
Use: Power management
Characteristics: High efficiency, low dropout voltage
Package: TO-220, TO-220FP, D²PAK, DPAK
Essence: Linear voltage regulator
Packaging/Quantity: Tube/50 units, Tape & Reel/2500 units
Specifications
- Input Voltage Range: 4.4V to 36V
- Output Voltage Range: 1.235V to 35V
- Output Current: 2A
- Dropout Voltage: 1.3V at 2A
- Quiescent Current: 75µA
- Operating Temperature Range: -40°C to 125°C
Detailed Pin Configuration
- VIN (Input Voltage)
- GND (Ground)
- VOUT (Output Voltage)
- BYPASS
- SHUTDOWN
- SENSE
Functional Features
- Adjustable output voltage
- Thermal shutdown and short-circuit protection
- Low dropout voltage
- Fast transient response
Advantages
- Wide input voltage range
- Low dropout voltage
- High efficiency
- Compact package options
Disadvantages
- Limited maximum output current
- Higher quiescent current compared to some alternatives
Working Principles
The L4975A is a linear voltage regulator that uses a PNP pass transistor to regulate the output voltage. It maintains a stable output voltage by adjusting the pass transistor's resistance based on the input voltage and load conditions.
Detailed Application Field Plans
The L4975A is suitable for various applications requiring a stable and adjustable output voltage, such as industrial automation, consumer electronics, automotive systems, and power supplies.
Detailed and Complete Alternative Models
- LM317: Adjustable linear voltage regulator with similar characteristics
- LT1086: Low dropout positive adjustable regulator with higher output current capability
- LM2940: Low dropout regulator with fixed output voltage options
Note: The above information is for reference purposes only. Always refer to the official datasheet for accurate specifications and details.
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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de L4975A en soluciones técnicas
Sure, here are 10 common questions and answers related to the application of L4975A in technical solutions:
What is the L4975A voltage regulator used for?
- The L4975A is a voltage regulator designed to provide a regulated output voltage from an unregulated input voltage source.
What is the maximum input voltage for the L4975A?
- The maximum input voltage for the L4975A is typically around 60V.
What is the typical output current capability of the L4975A?
- The L4975A can typically provide an output current of up to 3A.
How does the L4975A handle thermal management?
- The L4975A has built-in thermal shutdown and current limit features to protect itself from overheating and overloading.
What are the key features of the L4975A?
- The key features of the L4975A include wide input voltage range, high efficiency, adjustable output voltage, and overcurrent protection.
Can the L4975A be used in automotive applications?
- Yes, the L4975A is suitable for automotive applications due to its wide input voltage range and robust design.
What are the typical applications of the L4975A?
- The L4975A is commonly used in power supplies, battery chargers, industrial equipment, and automotive systems.
How do I set the output voltage of the L4975A?
- The output voltage of the L4975A can be adjusted using external resistors connected to its feedback pin.
What are the recommended input and output capacitors for the L4975A?
- It is recommended to use low-ESR capacitors at the input and output of the L4975A to ensure stability and performance.
Is there a reference design available for the L4975A?
- Yes, STMicroelectronics provides reference designs and application notes for the L4975A to assist with its implementation in technical solutions.
I hope these questions and answers are helpful! Let me know if you need further assistance.