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L4995JTR
Product Overview
Category: Integrated Circuit (IC)
Use: Voltage Regulator
Characteristics: - Low dropout voltage - High output current capability - Adjustable output voltage - Thermal shutdown protection - Overcurrent protection
Package: SOT-223
Essence: The L4995JTR is a voltage regulator IC that provides a stable output voltage for various electronic devices.
Packaging/Quantity: The L4995JTR is available in a SOT-223 package and is typically sold in reels of 2500 units.
Specifications
- Input Voltage Range: 4.5V to 28V
- Output Voltage Range: 1.2V to 25V
- Output Current: Up to 3A
- Dropout Voltage: 0.6V at 3A
- Quiescent Current: 10mA
- Operating Temperature Range: -40°C to +125°C
Detailed Pin Configuration
The L4995JTR has the following pin configuration:
- GND (Ground)
- Vout (Output Voltage)
- Vin (Input Voltage)
- ADJ (Adjustment Pin)
- NC (No Connection)
Functional Features
- Low Dropout Voltage: The L4995JTR has a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
- High Output Current Capability: With a maximum output current of 3A, the L4995JTR can power a wide range of electronic devices.
- Adjustable Output Voltage: The output voltage can be adjusted using an external resistor connected to the ADJ pin.
- Thermal Shutdown Protection: The IC includes thermal shutdown protection, which prevents damage due to excessive heat.
- Overcurrent Protection: The L4995JTR incorporates overcurrent protection to safeguard against excessive current flow.
Advantages and Disadvantages
Advantages: - Low dropout voltage ensures efficient regulation. - High output current capability allows for powering various devices. - Adjustable output voltage provides flexibility in different applications. - Thermal shutdown and overcurrent protection enhance reliability.
Disadvantages: - Limited input voltage range (4.5V to 28V). - Quiescent current of 10mA may be relatively high for low-power applications.
Working Principles
The L4995JTR is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage obtained from the output. Any difference between these voltages is amplified and used to control the pass transistor, adjusting its resistance to maintain a stable output voltage.
Detailed Application Field Plans
The L4995JTR is commonly used in various applications, including: 1. Power supplies for consumer electronics 2. Battery-powered devices 3. Automotive electronics 4. Industrial equipment 5. Telecommunications systems
Detailed and Complete Alternative Models
Some alternative models to the L4995JTR include: - LM317: A popular adjustable voltage regulator IC with similar characteristics. - LT1083: A high-current linear voltage regulator with adjustable output voltage. - TPS7A4700: An ultra-low-noise, high-PSRR linear voltage regulator.
These alternative models offer similar functionality and can be considered based on specific application requirements.
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Liệt kê 10 câu hỏi và câu trả lời thường gặp liên quan đến ứng dụng L4995JTR trong giải pháp kỹ thuật
Sure! Here are 10 common questions and answers related to the application of L4995JTR in technical solutions:
Q: What is L4995JTR? A: L4995JTR is a voltage regulator IC (integrated circuit) designed for use in various technical solutions.
Q: What is the input voltage range of L4995JTR? A: The input voltage range of L4995JTR is typically between 4.4V and 60V.
Q: What is the output voltage range of L4995JTR? A: The output voltage range of L4995JTR can be adjusted from 0.8V to 50V.
Q: What is the maximum output current of L4995JTR? A: The maximum output current of L4995JTR is typically around 5A.
Q: Is L4995JTR suitable for both step-up and step-down applications? A: Yes, L4995JTR can be used for both step-up and step-down voltage regulation applications.
Q: Does L4995JTR have built-in protection features? A: Yes, L4995JTR includes various protection features such as overcurrent protection, thermal shutdown, and undervoltage lockout.
Q: Can L4995JTR operate in a wide temperature range? A: Yes, L4995JTR is designed to operate in a wide temperature range, typically from -40°C to +125°C.
Q: What type of package does L4995JTR come in? A: L4995JTR is available in a small surface-mount PowerSO-10 package.
Q: Are there any application notes or reference designs available for L4995JTR? A: Yes, the manufacturer provides application notes and reference designs to help users implement L4995JTR in their technical solutions.
Q: Where can I find more detailed information about L4995JTR? A: You can refer to the datasheet of L4995JTR, which contains comprehensive information about its electrical characteristics, pin configuration, and application guidelines.