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L4931CDT80-TR
Product Overview
Category
L4931CDT80-TR belongs to the category of voltage regulators.
Use
It is primarily used for regulating voltage in electronic circuits.
Characteristics
- Low dropout voltage
- Output current up to 100 mA
- Fixed output voltage of 8.0V
- Thermal shutdown and short-circuit protection
- Low quiescent current
Package
L4931CDT80-TR comes in a small surface-mount package.
Essence
The essence of L4931CDT80-TR lies in its ability to provide stable and regulated voltage output for various electronic applications.
Packaging/Quantity
This product is typically packaged in reels or tubes, with a quantity of around 2500 units per reel/tube.
Specifications
- Input Voltage Range: 4.2V to 20V
- Output Voltage: 8.0V ± 2%
- Dropout Voltage: 0.5V (at 100mA)
- Quiescent Current: 75µA
- Operating Temperature Range: -40°C to +125°C
Detailed Pin Configuration
L4931CDT80-TR has three pins:
- Vin (Pin 1): Input voltage pin.
- Vout (Pin 2): Output voltage pin.
- GND (Pin 3): Ground pin.
Functional Features
- Low Dropout Voltage: The low dropout voltage ensures efficient regulation even when the input voltage is close to the desired output voltage.
- Thermal Shutdown and Short-Circuit Protection: These features protect the regulator from overheating and damage caused by short circuits.
- Low Quiescent Current: The low quiescent current minimizes power consumption when the regulator is idle.
Advantages and Disadvantages
Advantages
- Stable and regulated output voltage.
- Wide input voltage range.
- Thermal shutdown and short-circuit protection ensure safety.
- Low quiescent current reduces power consumption.
Disadvantages
- Limited output current (up to 100mA).
- Dropout voltage of 0.5V may not be suitable for applications with low input voltages.
Working Principles
L4931CDT80-TR is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.
Detailed Application Field Plans
L4931CDT80-TR finds applications in various electronic devices, including but not limited to: - Battery-powered devices - Portable audio players - Industrial control systems - Automotive electronics - Communication equipment
Detailed and Complete Alternative Models
Some alternative models to L4931CDT80-TR are: - LM7808: A popular 8.0V voltage regulator with similar specifications. - LT1084: A high-current 8.0V voltage regulator suitable for demanding applications. - MCP1702: A low quiescent current 8.0V voltage regulator for power-sensitive designs.
These alternative models offer different features and performance characteristics, allowing designers to choose the most suitable option for their specific requirements.
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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van L4931CDT80-TR in technische oplossingen
Sure! Here are 10 common questions and answers related to the application of L4931CDT80-TR in technical solutions:
Q1: What is the L4931CDT80-TR? A1: The L4931CDT80-TR is a low-dropout voltage regulator IC that provides a fixed output voltage of 3.3V with a maximum output current of 250mA.
Q2: What is the purpose of using the L4931CDT80-TR in a technical solution? A2: The L4931CDT80-TR is commonly used to regulate and stabilize the voltage supply in various electronic circuits, ensuring a constant and reliable power source.
Q3: What are the key features of the L4931CDT80-TR? A3: Some key features of the L4931CDT80-TR include low dropout voltage, low quiescent current, thermal shutdown protection, and short-circuit current limiting.
Q4: What is the input voltage range for the L4931CDT80-TR? A4: The input voltage range for the L4931CDT80-TR is typically between 4.5V and 20V.
Q5: Can the L4931CDT80-TR handle higher output currents? A5: No, the L4931CDT80-TR has a maximum output current rating of 250mA. If higher currents are required, an alternative voltage regulator with a higher current rating should be considered.
Q6: How does the L4931CDT80-TR handle thermal issues? A6: The L4931CDT80-TR incorporates thermal shutdown protection, which activates when the junction temperature exceeds a certain threshold, preventing damage to the device.
Q7: Is the L4931CDT80-TR suitable for battery-powered applications? A7: Yes, the L4931CDT80-TR is commonly used in battery-powered applications due to its low dropout voltage and low quiescent current, which help conserve battery life.
Q8: Can the L4931CDT80-TR be used in automotive applications? A8: Yes, the L4931CDT80-TR is designed to meet automotive specifications, making it suitable for use in automotive electronics.
Q9: Does the L4931CDT80-TR require external components for operation? A9: Yes, the L4931CDT80-TR typically requires input and output capacitors for stability and proper operation. The datasheet provides recommended values and configurations.
Q10: What are some typical applications of the L4931CDT80-TR? A10: The L4931CDT80-TR can be used in various applications such as microcontrollers, sensors, power management circuits, and other electronic devices that require a stable 3.3V power supply.