L4957AD1.8TR
Product Overview
- Category: Integrated Circuit (IC)
- Use: Voltage Regulator
- Characteristics: Low Dropout, High Current Capability
- Package: SOT-223
- Essence: Linear Voltage Regulator
- Packaging/Quantity: Tape and Reel, 2500 units per reel
Specifications
- Input Voltage Range: 2.5V to 18V
- Output Voltage Range: 1.8V
- Output Current: Up to 1.5A
- Dropout Voltage: 300mV at 1A
- Line Regulation: ±0.2%
- Load Regulation: ±0.4%
- Quiescent Current: 75µA
- Operating Temperature Range: -40°C to +125°C
Detailed Pin Configuration
The L4957AD1.8TR IC has the following pin configuration:
- Vout: Output Voltage
- GND: Ground
- Vin: Input Voltage
- NC: No Connection
- Enable: Enable Pin for On/Off Control
Functional Features
- Low dropout voltage ensures stable output even with low input voltage.
- High current capability allows for powering various loads.
- Excellent line and load regulation for precise voltage control.
- Enable pin provides easy on/off control of the regulator.
Advantages
- Wide input voltage range enables compatibility with different power sources.
- Low quiescent current minimizes power consumption in standby mode.
- Compact SOT-223 package facilitates space-saving PCB designs.
- Robust design ensures reliable performance in harsh environments.
Disadvantages
- Limited output voltage options restricts flexibility in certain applications.
- Higher dropout voltage compared to some alternative models may impact efficiency in low voltage scenarios.
Working Principles
The L4957AD1.8TR is a linear voltage regulator that maintains a constant output voltage of 1.8V, regardless of input voltage variations. It achieves this by using a pass transistor to regulate the output voltage based on a feedback mechanism. The enable pin allows the user to turn the regulator on or off as needed.
Detailed Application Field Plans
The L4957AD1.8TR is commonly used in various applications requiring a stable 1.8V power supply. Some typical application fields include:
- Microcontrollers and digital logic circuits
- Battery-powered devices
- Communication systems
- Automotive electronics
- Industrial control systems
Detailed and Complete Alternative Models
- L4957A: Adjustable Output Voltage (1.25V to 18V)
- L4957B: Fixed Output Voltage (2.5V)
- L4957C: Fixed Output Voltage (3.3V)
- L4957D: Fixed Output Voltage (5V)
These alternative models provide different fixed or adjustable output voltages to cater to specific application requirements.
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技術ソリューションにおける L4957AD1.8TR の適用に関連する 10 件の一般的な質問と回答をリストします。
Sure! Here are 10 common questions and answers related to the application of L4957AD1.8TR in technical solutions:
Q1: What is L4957AD1.8TR? A1: L4957AD1.8TR is a specific model of integrated circuit (IC) designed for use in technical solutions.
Q2: What is the purpose of L4957AD1.8TR? A2: The purpose of L4957AD1.8TR is to provide various functionalities, such as voltage regulation, current sensing, and protection features, in technical applications.
Q3: What are the key features of L4957AD1.8TR? A3: Some key features of L4957AD1.8TR include high efficiency, low quiescent current, overvoltage protection, thermal shutdown, and short-circuit protection.
Q4: In which technical solutions can L4957AD1.8TR be used? A4: L4957AD1.8TR can be used in a wide range of technical solutions, including automotive systems, industrial automation, power management, and battery charging applications.
Q5: How does L4957AD1.8TR regulate voltage? A5: L4957AD1.8TR regulates voltage by using a feedback mechanism that adjusts the output voltage based on the input and desired output voltage levels.
Q6: Can L4957AD1.8TR handle high currents? A6: Yes, L4957AD1.8TR is designed to handle high currents, making it suitable for applications that require efficient power delivery.
Q7: Does L4957AD1.8TR have built-in protection features? A7: Yes, L4957AD1.8TR has built-in protection features such as overvoltage protection, thermal shutdown, and short-circuit protection to ensure safe operation.
Q8: What is the input voltage range supported by L4957AD1.8TR? A8: L4957AD1.8TR supports a wide input voltage range, typically from 4.5V to 60V, making it versatile for various applications.
Q9: Can L4957AD1.8TR be used in automotive applications? A9: Yes, L4957AD1.8TR is suitable for automotive applications due to its robust design, high efficiency, and ability to handle automotive voltage levels.
Q10: Are there any application notes or reference designs available for L4957AD1.8TR? A10: Yes, the manufacturer of L4957AD1.8TR typically provides application notes and reference designs that can help engineers in implementing the IC effectively in their technical solutions.
Please note that the specific details and answers may vary depending on the manufacturer's documentation and the application requirements.