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Functionality of TL431ACDRE4
This component acts as a programmable voltage reference, similar to a Zener diode but with adjustable output voltage capabilities.
Application Scenarios
The TL431ACDRE4 is widely used in:
1. Feedback Loops in Power Supplies: To regulate and stabilize output voltage.
2. Voltage Monitoring: In systems requiring precise voltage tracking.
3. Signal Conditioning: As a reference in signal processing circuits.
Parameter Characteristics
Important specifications of the TL431ACDRE4 include:
- Variable Output Voltage: Ranging from 2.5 to 36 volts.
- High Stability: Minimal variation across temperature ranges.
- Low Noise: Suitable for sensitive electronic applications.
Application Circuit: Feedback Loop in a Power Supply
For a practical example, consider a circuit for a feedback loop in a power supply.
1. Necessary Components
- TL431ACDRE4 shunt regulator
- Resistors for voltage adjustment (R1, R2)
- Power supply circuitry
2. Pin Layout
- Pin 1: Reference (Ref)
- Pin 2: Anode
- Pin 3: Cathode
3. Circuit Assembly
- R1 connects from the Ref (Pin 1) to the Anode (Pin 2).
- R2 links from the Ref (Pin 1) to the Cathode (Pin 3), which is also the output node.
4. Voltage Adjustment Process
- The output voltage is set using the formula Vout = Vref * (1 + R1/R2).
5. Design Focus Points
- Voltage Stability: Ensure the circuit maintains stable voltage under varying load conditions.
- Thermal Handling: Be aware of the heat dissipation of the TL431ACDRE4, particularly in high-current scenarios.
- Component Tolerance: Select resistors with precise tolerances for accurate voltage regulation.
6. Output Calibration
- Adjust R1 and R2 values to fine-tune the output voltage.
Circuit Design Considerations
When creating a design with the TL431ACDRE4, it's important to factor in the maximum cathode current capability, the impact of temperature fluctuations, stability with different load types, and the precision of connected components.
To summarize, the TL431ACDRE4 serves as an adjustable shunt regulator, ideal for feedback loops in power supplies, voltage monitoring, and signal conditioning. Its adjustable output voltage, high stability, and low noise output are key features. Designing with this component requires careful attention to voltage stability, thermal management, and component accuracy.
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All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the TL431ACDRE4 we delivered, we will accept the replacement or return of the TL431ACDRE4 only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of TL431ACDRE4.
(3)The PartNo is unused and only in the original unpacked packaging.
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(1)Inform us within 90 days
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