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TL431CDR2G
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: SOIC-8
Essence: The TL431CDR2G is a precision shunt regulator that provides a stable reference voltage. It is commonly used in various electronic circuits to regulate voltage levels and ensure accurate performance.
Packaging/Quantity: The TL431CDR2G is available in tape and reel packaging, with 2500 units 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)
- Cathode Current: 1mA to 100mA
Detailed Pin Configuration
The TL431CDR2G has eight pins arranged as follows:
```
| | --|____|-- | | --|____|-- | | --|____|-- ```
Pin 1: Anode (A) Pin 2: Cathode (K) Pin 3: Reference Voltage (Vref) Pin 4: N/C (No Connection) Pin 5: N/C (No Connection) Pin 6: N/C (No Connection) Pin 7: N/C (No Connection) Pin 8: Cathode (K)
Functional Features
- Voltage regulation: The TL431CDR2G maintains a stable reference voltage, allowing precise regulation of output voltage levels.
- Programmable output: The output voltage can be adjusted by connecting external resistors to the reference pin (Vref).
- Low dynamic output impedance: The device exhibits low impedance, ensuring minimal voltage fluctuations under varying load conditions.
- Wide operating current range: The TL431CDR2G can handle a wide range of operating currents, making it suitable for various applications.
- High accuracy: It provides accurate voltage references with low tolerance and temperature drift.
- Fast turn-on response: The device responds quickly to changes in input voltage, ensuring rapid stabilization of the output.
Advantages and Disadvantages
Advantages: - Precise voltage regulation - Adjustable output voltage - Wide operating current range - High accuracy - Fast response time
Disadvantages: - Requires external resistors for programming the output voltage - Limited to shunt regulator applications
Working Principles
The TL431CDR2G operates as a shunt regulator. It compares the reference voltage (Vref) with the feedback voltage obtained from the voltage divider connected to the reference pin. Based on this comparison, the device adjusts its internal resistance to maintain a constant output voltage. By changing the values of the external resistors, the output voltage can be programmed within the specified range.
Detailed Application Field Plans
The TL431CDR2G is widely used in various electronic systems and circuits, including:
- Power Supplies: It is commonly employed in voltage regulators and power management circuits to ensure stable and accurate output voltages.
- Battery Charging Systems: The TL431CDR2G helps regulate the charging voltage in battery charging circuits, preventing overcharging and optimizing battery life.
- Audio Amplifiers: It is utilized in audio amplifiers to provide precise biasing and voltage references, enhancing audio signal quality.
- Switching Power Supplies: The TL431CDR2G aids in voltage regulation and feedback control in switching power supply circuits, improving efficiency and stability.
- LED Lighting Systems: It is used to regulate the current flowing through LEDs, ensuring consistent brightness and preventing damage due to excessive current.
Detailed and Complete Alternative Models
- TLV431AIDBZR: Adjustable Precision Shunt Regulator with similar specifications and package (SOT-23).
- LM4040CIM3-2.5/NOPB: Precision Micropower Shunt Voltage Reference with fixed output voltage (2.5V) and SOT-23 package.
- REF3030AIDBZT: Precision Voltage Reference with fixed output voltage (3.0V) and SOT-23 package.
These alternative models offer similar functionality and can be considered as substitutes for the TL431CDR2G in various applications.
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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de TL431CDR2G en soluciones técnicas
Sure! Here are 10 common questions and answers related to the application of TL431CDR2G:
Q: What is TL431CDR2G? A: TL431CDR2G is a programmable precision voltage reference integrated circuit (IC) commonly used in technical solutions.
Q: What is the purpose of TL431CDR2G? A: TL431CDR2G is used as a voltage reference or shunt regulator in various applications, such as power supplies, battery chargers, and voltage monitoring circuits.
Q: How does TL431CDR2G work? A: TL431CDR2G compares the input voltage with an internal reference voltage and adjusts its output to maintain a constant voltage level.
Q: What is the voltage range of TL431CDR2G? A: The voltage range of TL431CDR2G is typically from 2.5V to 36V.
Q: Can TL431CDR2G be used as a current regulator? A: Yes, TL431CDR2G can be used as a current regulator by connecting it in series with a resistor and controlling the current flow through the resistor.
Q: Is TL431CDR2G suitable for high-frequency applications? A: TL431CDR2G is not specifically designed for high-frequency applications, but it can still be used in moderate frequency circuits.
Q: How accurate is TL431CDR2G as a voltage reference? A: TL431CDR2G has a typical accuracy of ±1% over a wide temperature range.
Q: Can TL431CDR2G handle high currents? A: TL431CDR2G can handle currents up to 100mA, but for higher currents, an external transistor is usually required.
Q: What are the typical applications of TL431CDR2G? A: TL431CDR2G is commonly used in power supplies, battery chargers, voltage regulators, and feedback control circuits.
Q: Is TL431CDR2G available in different package types? A: Yes, TL431CDR2G is available in various package types, including SOT-23, SOIC, and TO-92.
Please note that these answers are general and may vary depending on specific datasheet specifications and application requirements.