LM217K
Product Overview
Category: Integrated Circuit (IC)
Use: Voltage Regulator
Characteristics: - Adjustable output voltage - High current capability - Thermal overload protection - Short circuit protection
Package: TO-220
Essence: The LM217K is a versatile voltage regulator IC that provides a stable and adjustable output voltage for various electronic applications.
Packaging/Quantity: The LM217K is typically sold in packs of 10 or more.
Specifications
- Input Voltage Range: 4.2V to 40V
- Output Voltage Range: 1.2V to 37V
- Output Current: Up to 1.5A
- Dropout Voltage: 2.0V (typical)
- Line Regulation: 0.01%/V
- Load Regulation: 0.3%
- Operating Temperature Range: -40°C to +125°C
Pin Configuration
The LM217K has three pins:
- Input Pin (IN): This pin is used to connect the input voltage source.
- Output Pin (OUT): This pin provides the regulated output voltage.
- Adjustment Pin (ADJ): This pin is used to adjust the output voltage.
Functional Features
- Adjustable Output Voltage: The LM217K allows users to set the desired output voltage within a wide range.
- High Current Capability: It can handle high currents up to 1.5A, making it suitable for power-hungry applications.
- Thermal Overload Protection: The IC incorporates thermal shutdown circuitry to prevent damage due to excessive heat.
- Short Circuit Protection: The LM217K includes built-in short circuit protection, safeguarding the circuit from damage in case of a short circuit.
Advantages and Disadvantages
Advantages: - Wide input voltage range - Adjustable output voltage - High current capability - Thermal and short circuit protection
Disadvantages: - Dropout voltage of 2.0V may limit its use in low voltage applications - Requires external components for stability
Working Principles
The LM217K is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage obtained from the adjustment pin and adjusts the pass transistor accordingly to maintain a stable output voltage.
Detailed Application Field Plans
The LM217K finds applications in various fields, including: 1. Power supply circuits for electronic devices 2. Battery charging circuits 3. Audio amplifiers 4. LED drivers 5. Industrial control systems
Detailed and Complete Alternative Models
Some alternative models to the LM217K include: - LM317T - LM350 - LM338 - LM7805
These models offer similar functionality and can be used as substitutes depending on specific requirements.
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기술 솔루션에 LM217K 적용과 관련된 10가지 일반적인 질문과 답변을 나열하세요.
Sure! Here are 10 common questions and answers related to the application of LM217K in technical solutions:
Q: What is LM217K? A: LM217K is a voltage regulator integrated circuit (IC) that provides a regulated output voltage.
Q: What is the input voltage range for LM217K? A: The input voltage range for LM217K is typically between 4.2V and 40V.
Q: What is the output voltage range of LM217K? A: The output voltage range of LM217K can be adjusted from 1.2V to 37V using external resistors.
Q: How much current can LM217K handle? A: LM217K can handle a maximum output current of 1.5A.
Q: Can LM217K be used as a step-down (buck) converter? A: Yes, LM217K can be used as a step-down converter by adjusting the output voltage lower than the input voltage.
Q: Is LM217K suitable for battery-powered applications? A: Yes, LM217K is suitable for battery-powered applications as it has low quiescent current and can operate with low input voltages.
Q: Does LM217K require any external components for operation? A: Yes, LM217K requires external capacitors and resistors for stability and voltage regulation.
Q: Can LM217K handle high temperatures? A: LM217K has a temperature range of -40°C to +125°C, making it suitable for various environments.
Q: Can LM217K protect against overcurrent or short circuits? A: No, LM217K does not have built-in protection against overcurrent or short circuits. External protection circuitry may be required.
Q: What are some typical applications of LM217K? A: LM217K is commonly used in power supplies, battery chargers, adjustable voltage regulators, and other electronic systems requiring stable voltage regulation.
Please note that these answers are general and may vary depending on specific datasheet specifications and application requirements.