TL431AQDCKR
Product Overview
Category: Integrated Circuits (ICs)
Use: Voltage References
Characteristics: - Adjustable Precision Shunt Regulator - Programmable Output Voltage - Low Dynamic Output Impedance - Wide Operating Current Range - High Accuracy - Low Temperature Drift - Fast Turn-On Response
Package: SC-70 (SOT-323), Tape and Reel
Essence: The TL431AQDCKR is a precision shunt regulator that provides a stable reference voltage. It is commonly used in various electronic circuits to regulate voltage levels.
Packaging/Quantity: The TL431AQDCKR is available in a SC-70 package, supplied on tape and reel. The quantity per reel is typically 3000 pieces.
Specifications
- Reference Voltage Range: 2.495V to 36V
- Operating Current Range: 1mA to 100mA
- Temperature Range: -40°C to +85°C
- Initial Accuracy: ±0.5%
- Temperature Stability: ±50ppm/°C
- Dynamic Output Impedance: 0.22Ω
Pin Configuration
The TL431AQDCKR 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
- Adjustable Output Voltage: The TL431AQDCKR allows for precise adjustment of the output voltage according to the application requirements.
- Voltage Reference: It provides a stable reference voltage that can be used as a comparison or feedback element in various circuits.
- Shunt Regulation: The device regulates the voltage by shunting excess current to the ground, maintaining a constant output voltage.
- Low Dynamic Output Impedance: The TL431AQDCKR exhibits low dynamic output impedance, ensuring stability and accurate voltage regulation.
Advantages and Disadvantages
Advantages: - High accuracy and temperature stability - Wide operating current range - Fast turn-on response - Adjustable output voltage
Disadvantages: - Requires an external resistor for precise voltage adjustment - Limited maximum operating voltage (36V)
Working Principles
The TL431AQDCKR operates based on the principle of shunt regulation. It compares the reference voltage at the Reference (R) pin with the voltage across a voltage divider network connected to the Anode (A) and Cathode (K) pins. By adjusting the voltage divider ratio using an external resistor, the desired output voltage can be set. The TL431AQDCKR then regulates the voltage by shunting excess current through the Cathode (K) pin, maintaining a constant output voltage.
Detailed Application Field Plans
The TL431AQDCKR finds applications in various electronic systems, including but not limited to: 1. Voltage regulators in power supplies 2. Battery chargers 3. Switching power converters 4. Audio amplifiers 5. LED drivers 6. Precision measurement equipment
Detailed and Complete Alternative Models
Some alternative models that can be considered as substitutes for the TL431AQDCKR are: 1. TL431BQDBZR 2. TL431CDBVR 3. TL431IDBZR 4. TL431ACDBZR 5. TL431AIDBZR
These models offer similar functionality and characteristics, providing flexibility in design choices.
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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av TL431AQDCKR i tekniska lösningar
Sure! Here are 10 common questions and answers related to the application of TL431AQDCKR:
Q: What is TL431AQDCKR? A: TL431AQDCKR is a programmable precision voltage reference that can be used in various technical solutions.
Q: What is the typical operating voltage range for TL431AQDCKR? A: The typical operating voltage range for TL431AQDCKR is from 2.5V to 36V.
Q: How does TL431AQDCKR work? A: TL431AQDCKR operates by comparing the reference voltage with an external voltage, and then adjusting its output accordingly.
Q: Can TL431AQDCKR be used as a voltage regulator? A: Yes, TL431AQDCKR can be used as a voltage regulator by connecting it in a feedback loop with an external transistor.
Q: What is the purpose of the adjustable reference pin (ADJ) on TL431AQDCKR? A: The ADJ pin allows the user to set the desired output voltage by connecting a resistor divider network.
Q: Is TL431AQDCKR suitable for high-precision applications? A: Yes, TL431AQDCKR is suitable for high-precision applications due to its low output voltage tolerance and temperature stability.
Q: Can TL431AQDCKR handle high currents? A: No, TL431AQDCKR has a maximum cathode current rating of 100mA, so it is not suitable for high-current applications.
Q: What are some common applications of TL431AQDCKR? A: TL431AQDCKR is commonly used in power supplies, battery chargers, voltage references, and feedback control circuits.
Q: Does TL431AQDCKR require an external compensation capacitor? A: No, TL431AQDCKR does not require an external compensation capacitor as it is internally compensated.
Q: What is the temperature range for TL431AQDCKR? A: TL431AQDCKR has a temperature range of -40°C to +125°C, making it suitable for a wide range of operating conditions.
Please note that these answers are general and may vary depending on specific application requirements.