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TL431IDBZR
Product Overview
Category: Integrated Circuit (IC)
Use: Voltage Reference
Characteristics: - Adjustable precision shunt regulator - Programmable output voltage - Low dynamic impedance - High stability over temperature and time - Wide operating current range - Low output noise - Fast response time
Package: SOT-23-3
Essence: The TL431IDBZR is a versatile voltage reference IC that provides a stable and adjustable output voltage. It is commonly used in various electronic circuits where precise voltage regulation is required.
Packaging/Quantity: The TL431IDBZR is available in a SOT-23-3 package, which is a small surface-mount package with three pins. It is typically sold in reels or tubes containing multiple units.
Specifications
The TL431IDBZR has the following specifications:
- Reference Voltage Range: 2.495V to 36V
- Operating Current Range: 1mA to 100mA
- Dynamic Output Impedance: 0.22Ω (typical)
- Temperature Coefficient: ±50ppm/°C (typical)
- Output Noise Voltage: 0.2μVrms (typical)
- Response Time: 2μs (typical)
Detailed Pin Configuration
The TL431IDBZR has three pins:
- Anode (A): Connected to the positive supply voltage.
- Cathode (K): Connected to the load or ground.
- Reference (R): Provides the regulated output voltage.
Functional Features
The TL431IDBZR offers the following functional features:
- Adjustable Output Voltage: The reference pin allows the user to set the desired output voltage by connecting external resistors.
- Voltage Regulation: The IC maintains a stable output voltage regardless of input voltage variations or load changes.
- Programmable Output: The output voltage can be programmed to any value within the specified range using external resistors.
- Low Dynamic Impedance: The TL431IDBZR exhibits low dynamic output impedance, ensuring excellent load regulation.
- High Stability: It provides high stability over temperature and time, making it suitable for precision applications.
- Low Noise: The IC has low output noise, minimizing interference in sensitive circuits.
- Fast Response Time: The TL431IDBZR responds quickly to changes in input or load conditions.
Advantages and Disadvantages
Advantages: - Wide operating current range allows flexibility in various applications. - Adjustable output voltage provides versatility. - High stability ensures reliable performance. - Low output noise minimizes interference. - Small package size enables space-saving designs.
Disadvantages: - Requires external resistors for voltage programming. - Limited maximum output voltage of 36V.
Working Principles
The TL431IDBZR operates based on the principle of a shunt regulator. It compares the reference voltage at the reference pin with a fraction of the output voltage. By adjusting the resistance connected to the reference pin, the output voltage can be precisely regulated. The internal circuitry of the IC amplifies the error between the reference voltage and the feedback voltage, controlling the current flow through the cathode pin to maintain a stable output voltage.
Detailed Application Field Plans
The TL431IDBZR finds applications in various fields, including:
- Power Supplies: It is commonly used in power supply circuits to provide precise voltage regulation for stable operation of electronic devices.
- Battery Chargers: The IC ensures accurate charging voltage control in battery charger circuits, preventing overcharging or undercharging.
- Audio Amplifiers: It is employed in audio amplifier circuits to regulate bias voltages and improve overall performance.
- Voltage References: The TL431IDBZR serves as a voltage reference in many electronic systems, providing a stable and accurate voltage for other components.
Detailed and Complete Alternative Models
Some alternative models to the TL431IDBZR include:
- LM4040: A precision voltage reference IC with fixed output voltages.
- LT1236: A high-precision shunt voltage reference with low temperature drift.
- REF3030: A low-power, low-noise voltage reference with adjustable output voltage.
These alternative models offer similar functionality and can be used as substitutes depending on specific requirements.
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10 domande e risposte comuni relative all'applicazione di TL431IDBZR nelle soluzioni tecniche
Sure! Here are 10 common questions and answers related to the application of TL431IDBZR in technical solutions:
Q: What is TL431IDBZR? A: TL431IDBZR is a three-terminal adjustable precision shunt regulator commonly used in various technical applications.
Q: What is the purpose of TL431IDBZR? A: TL431IDBZR is used to provide precise voltage references, voltage regulation, and error amplification in electronic circuits.
Q: How does TL431IDBZR work? A: TL431IDBZR compares the reference voltage with an external voltage divider network and adjusts its output to maintain a stable voltage.
Q: What is the voltage range of TL431IDBZR? A: The voltage range of TL431IDBZR is typically from 2.5V to 36V, making it suitable for a wide range of applications.
Q: Can TL431IDBZR be used as a voltage regulator? A: Yes, TL431IDBZR can be used as a voltage regulator by connecting it in series with a resistor and a capacitor to stabilize the output voltage.
Q: Is TL431IDBZR suitable for precision applications? A: Yes, TL431IDBZR is known for its high precision and low temperature coefficient, making it suitable for precision applications.
Q: Can TL431IDBZR be used in switching power supplies? A: Yes, TL431IDBZR can be used in switching power supplies to regulate the output voltage and improve overall stability.
Q: What are the typical applications of TL431IDBZR? A: TL431IDBZR is commonly used in battery chargers, power supplies, audio amplifiers, voltage references, and feedback control circuits.
Q: Can TL431IDBZR handle high currents? A: TL431IDBZR can handle currents up to 100mA, but for higher current applications, an external transistor is often used to amplify the current.
Q: Is TL431IDBZR available in different package types? A: Yes, TL431IDBZR is available in various package types, including SOT-23, SOIC, and TO-92, providing flexibility for different circuit designs.
Please note that these answers are general and may vary depending on specific application requirements.