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: TO-252 (DPAK)
Essence: The TL431IDT is a three-terminal adjustable precision shunt regulator. It provides a highly accurate reference voltage that can be programmed to any desired value between the reference voltage (Vref) and 36 volts.
Packaging/Quantity: The TL431IDT is available in tape and reel packaging, with 2,500 units per reel.
The TL431IDT has three pins:
Advantages: - High accuracy and stability - Wide operating current range - Programmable output voltage - Low output noise - Fast response time
Disadvantages: - Requires external resistors for precise voltage adjustment - Limited maximum output voltage (36 V)
The TL431IDT operates as a shunt regulator. It compares the reference voltage (Vref) with the feedback voltage obtained from the voltage divider connected to the REF pin. By adjusting the resistance values in the voltage divider, the output voltage can be precisely set. When the output voltage exceeds the desired value, the TL431IDT shunts excess current to the ground, maintaining a stable output voltage.
The TL431IDT is widely used in various applications, including:
Some alternative models to TL431IDT include:
These alternative models offer similar functionality and can be used as substitutes for the TL431IDT in various applications.
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Sure! Here are 10 common questions and answers related to the application of TL431IDT:
Q: What is TL431IDT? A: TL431IDT is a three-terminal adjustable precision shunt regulator commonly used in technical solutions.
Q: What is the purpose of TL431IDT? A: TL431IDT is used to provide a stable voltage reference or regulate voltage levels in various electronic circuits.
Q: How does TL431IDT work? A: TL431IDT compares the reference voltage with an external voltage divider network and adjusts its output accordingly to maintain a stable voltage.
Q: What is the voltage range of TL431IDT? A: TL431IDT can operate within a voltage range of 2.5V to 36V.
Q: Can TL431IDT be used as a voltage regulator? A: Yes, TL431IDT can be used as a voltage regulator by connecting it in series with a resistor and a load.
Q: What are the typical applications of TL431IDT? A: TL431IDT is commonly used in power supplies, battery chargers, audio amplifiers, and voltage references.
Q: How accurate is TL431IDT in regulating voltage? A: TL431IDT has a high level of accuracy, typically within ±1% of the desired output voltage.
Q: Can TL431IDT handle high currents? A: TL431IDT can handle currents up to 100mA, but for higher currents, an external transistor is often used.
Q: Is TL431IDT suitable for both AC and DC applications? A: Yes, TL431IDT can be used in both AC and DC applications as long as the voltage range is within its specified limits.
Q: Are there any precautions to consider when using TL431IDT? A: Yes, it is important to ensure proper heat dissipation, avoid exceeding the maximum ratings, and follow the recommended circuit layout guidelines provided in the datasheet.
Please note that these answers are general and may vary depending on specific application requirements.