TL431CZ
Product Overview
- Category: Integrated Circuit
- Use: Voltage Reference
- Characteristics: Adjustable Precision Shunt Regulator
- Package: TO-92
- Essence: Programmable Precision References
- Packaging/Quantity: Bulk, 1000 pieces per reel
Specifications
- Reference Voltage Range: 2.495V to 36V
- Operating Current Range: 1mA to 100mA
- Temperature Range: -40°C to +85°C
- Line Regulation: 0.2% (typical)
- Load Regulation: 0.4% (typical)
- Output Voltage Tolerance: ±2%
- Cathode Current: 1mA to 100mA
Detailed Pin Configuration
The TL431CZ has three pins:
- Anode (A): Connected to the positive terminal of the power supply.
- Cathode (K): Connected to the load or ground.
- Reference (R): Provides the regulated output voltage.
Functional Features
- Programmable output voltage with a single external resistor.
- High precision and stability over temperature and time.
- Low dynamic impedance.
- Fast response time to changes in input voltage.
- Low operating current consumption.
Advantages and Disadvantages
Advantages
- Wide reference voltage range allows for versatile applications.
- Simple and cost-effective voltage regulation solution.
- Excellent line and load regulation characteristics.
- High accuracy and stability.
- Easy to use and integrate into various circuits.
Disadvantages
- Limited maximum cathode current capability.
- Requires an external resistor for programming the output voltage.
- Not suitable for high-power applications.
Working Principles
The TL431CZ is a three-terminal adjustable shunt regulator. It operates by comparing the reference voltage at the Reference (R) pin with a voltage divider network connected to the Anode (A) and Cathode (K) pins. By adjusting the resistance of the external resistor, the output voltage can be programmed to the desired value.
Detailed Application Field Plans
The TL431CZ is widely used in various applications, including:
- Voltage regulation in power supplies and battery chargers.
- Precision voltage references for analog-to-digital converters (ADCs).
- Current limiting circuits.
- Overvoltage protection circuits.
- Switch-mode power supplies (SMPS).
- LED drivers.
- Audio amplifiers.
- Temperature sensors and controllers.
Detailed and Complete Alternative Models
- TL431ACD: Surface Mount Package, Tape and Reel Packaging
- TL431BQDBZR: SOT-23 Package, Tape and Reel Packaging
- TL431IDBZR: SOT-23 Package, Tape and Reel Packaging
- TL431AQDBZR: SOT-23 Package, Tape and Reel Packaging
- TL431BIDBZR: SOT-23 Package, Tape and Reel Packaging
These alternative models offer similar functionality and characteristics to the TL431CZ, but with different package options for specific application requirements.
In conclusion, the TL431CZ is a versatile and reliable voltage reference integrated circuit. Its adjustable precision shunt regulator design, along with its wide range of applications, make it a popular choice among engineers and designers in various industries.
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10個與TL431CZ在技術方案中應用相關的常見問題與解答
Sure! Here are 10 common questions and answers related to the application of TL431CZ in technical solutions:
Q: What is TL431CZ? A: TL431CZ is a three-terminal adjustable precision shunt regulator that can be used for various voltage reference and regulation applications.
Q: What is the purpose of TL431CZ? A: TL431CZ is commonly used to provide stable and accurate voltage references, voltage regulation, and feedback control in electronic circuits.
Q: How does TL431CZ work? A: TL431CZ compares the reference voltage at its reference pin with an external voltage divider network, and adjusts its output voltage accordingly to maintain a stable reference voltage.
Q: What is the voltage range of TL431CZ? A: TL431CZ operates within a voltage range of 2.5V to 36V.
Q: Can TL431CZ be used as a voltage regulator? A: Yes, TL431CZ can be used as a voltage regulator by connecting it in series with a resistor and a load to provide a regulated output voltage.
Q: What are the typical applications of TL431CZ? A: TL431CZ is commonly used in power supplies, battery chargers, audio amplifiers, voltage references, and feedback control circuits.
Q: How accurate is TL431CZ in providing voltage references? A: TL431CZ has a high level of accuracy, typically within ±1% of the desired reference voltage.
Q: Can TL431CZ handle high currents? A: TL431CZ can handle currents up to 100mA, but for higher current applications, an external transistor can be used to amplify the current.
Q: How can TL431CZ be programmed for a specific voltage reference? A: TL431CZ can be programmed by connecting an external resistor divider network between the reference pin and ground, which sets the desired output voltage.
Q: Are there any precautions to consider when using TL431CZ? A: Yes, it is important to ensure proper heat dissipation, avoid exceeding the maximum ratings, and provide adequate decoupling capacitors for stable operation of TL431CZ.