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L78L15ACUTR
Product Overview
- Category: Voltage Regulator
- Use: To regulate and stabilize the output voltage in electronic circuits
- Characteristics:
- Fixed output voltage of 15V
- Low dropout voltage
- High ripple rejection
- Thermal shutdown protection
- Package: TO-92 (Through-Hole)
- Essence: Linear voltage regulator
- Packaging/Quantity: Tape and Reel, 2,500 units per reel
Specifications
- Input Voltage Range: 17V to 35V
- Output Voltage: 15V
- Output Current: 100mA
- Dropout Voltage: 2V (typical)
- Line Regulation: ±0.1% (typical)
- Load Regulation: ±0.3% (typical)
- Ripple Rejection: 60dB (typical)
- Operating Temperature Range: -40°C to +125°C
Detailed Pin Configuration
The L78L15ACUTR has three pins:
- Input (VIN): Connects to the input voltage source.
- Ground (GND): Connected to the ground reference.
- Output (VOUT): Provides the regulated output voltage.
Functional Features
- Regulates the output voltage to a fixed 15V.
- Provides a stable output even with varying input voltages.
- Protects against thermal overload with built-in thermal shutdown.
- Filters out noise and ripple from the input voltage with high ripple rejection.
Advantages and Disadvantages
Advantages
- Simple and easy to use.
- Cost-effective solution for voltage regulation.
- Compact size and lightweight.
- Wide operating temperature range.
Disadvantages
- Limited output current capability.
- Requires an input voltage higher than the desired output voltage.
- Generates heat during operation, requiring proper heat dissipation.
Working Principles
The L78L15ACUTR is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage and adjusting the pass transistor accordingly. This ensures a stable output voltage despite variations in the input voltage or load conditions.
Detailed Application Field Plans
The L78L15ACUTR is commonly used in various electronic applications, including:
- Power supplies for microcontrollers and other low-power digital circuits.
- Voltage regulation in audio amplifiers and preamplifiers.
- Battery charging circuits.
- Automotive electronics.
- Industrial control systems.
Detailed and Complete Alternative Models
- LM7815: Similar specifications and pin configuration, available in different packages.
- MC78L15: Low-cost alternative with similar performance characteristics.
- UA7815: Higher output current capability, suitable for power-hungry applications.
These alternative models can be considered based on specific requirements and availability.
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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de L78L15ACUTR en soluciones técnicas
Sure! Here are 10 common questions and answers related to the application of L78L15ACUTR in technical solutions:
Q: What is L78L15ACUTR? A: L78L15ACUTR is a voltage regulator IC that provides a fixed output voltage of +15V.
Q: What is the input voltage range for L78L15ACUTR? A: The input voltage range for L78L15ACUTR is typically between 17V and 35V.
Q: What is the maximum output current of L78L15ACUTR? A: The maximum output current of L78L15ACUTR is 100mA.
Q: Can L78L15ACUTR handle higher input voltages than its rated output voltage? A: No, L78L15ACUTR is designed to regulate the output voltage at +15V and cannot handle higher input voltages.
Q: Is L78L15ACUTR suitable for battery-powered applications? A: Yes, L78L15ACUTR can be used in battery-powered applications as long as the input voltage remains within its specified range.
Q: Does L78L15ACUTR require any external components for operation? A: Yes, L78L15ACUTR requires input and output capacitors for stability and filtering purposes. Refer to the datasheet for recommended values.
Q: Can L78L15ACUTR handle short-circuit conditions? A: Yes, L78L15ACUTR has built-in short-circuit protection, which limits the output current to a safe level during short-circuit events.
Q: Can multiple L78L15ACUTR regulators be connected in parallel to increase the output current? A: No, it is not recommended to connect multiple L78L15ACUTR regulators in parallel as it can lead to stability issues and uneven load sharing.
Q: Can L78L15ACUTR operate in high-temperature environments? A: L78L15ACUTR has a maximum operating temperature of 125°C, so it can handle moderately high-temperature environments.
Q: What are some typical applications for L78L15ACUTR? A: L78L15ACUTR is commonly used in various electronic devices such as audio amplifiers, power supplies, and industrial control systems where a regulated +15V voltage is required.
Please note that these answers are general and may vary depending on specific datasheet specifications and application requirements.