TL431BCDBVRE4

Product Overview

• Category: Integrated Circuit
• Use: Voltage Reference
• Characteristics: Adjustable Precision Shunt Regulator
• Package: SOT-23 (3-Lead)
• Essence: Programmable Precision References
• Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

• Reference Voltage Range: 2.495V to 36V
• Operating Temperature Range: -40°C to +85°C
• Output Current: 100mA
• Initial Accuracy: ±1%
• Temperature Stability: ±50ppm/°C
• Cathode Current: 1mA to 100mA
• Anode Current: 1mA to 150mA
• Dynamic Output Impedance: 0.22Ω

Pin Configuration

The TL431BCDBVRE4 has three pins:

1. Anode (A): Connected to the positive terminal of the voltage source.
2. Cathode (K): Connected to the load or ground.
3. Reference (R): Provides the regulated output voltage.

Functional Features

• Programmable output voltage reference.
• High precision and stability.
• Low dynamic impedance.
• Wide operating voltage range.
• Low temperature coefficient.
• Fast response time.

Advantages and Disadvantages

Advantages

• Highly accurate voltage regulation.
• Easy to use and integrate into circuits.
• Wide range of applications.
• Cost-effective solution.
• Compact package size.

Disadvantages

• Limited output current capacity.
• Requires external components for certain applications.
• Sensitivity to noise and fluctuations in input voltage.

Working Principles

The TL431BCDBVRE4 is a shunt regulator that maintains a constant voltage across its reference pin. It compares the reference voltage with an internal voltage divider network and adjusts the current flowing through the cathode to maintain a stable output voltage. By programming the reference voltage using external resistors, the TL431BCDBVRE4 can be used to regulate various voltages in different applications.

Detailed Application Field Plans

The TL431BCDBVRE4 is widely used in various electronic systems and applications, including:

1. Power supplies: Provides precise voltage regulation for power supply circuits.
2. Battery charging circuits: Controls the charging voltage to ensure safe and efficient charging.
3. Voltage regulators: Stabilizes the output voltage of linear and switching regulators.
4. Audio amplifiers: Maintains a constant bias voltage for improved audio performance.
5. LED drivers: Regulates the forward voltage of LEDs for consistent brightness.

Detailed and Complete Alternative Models

• TL431ACDBZR
• TL431BQDBZT
• TL431IDBVR
• TL431AIDBZR
• TL431AQDBZR
• TL431BIDBZR
• TL431CDBZR
• TL431CDR2G

These alternative models offer similar functionality and characteristics to the TL431BCDBVRE4, providing flexibility in choosing the most suitable voltage reference for specific applications.

In conclusion, the TL431BCDBVRE4 is a versatile and reliable voltage reference integrated circuit. With its adjustable precision and programmable features, it finds extensive use in various electronic systems requiring accurate voltage regulation. Despite some limitations, its advantages outweigh the disadvantages, making it a popular choice among engineers and designers.

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