TL431AQDBVRG4

Product Overview

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

Specifications

• Reference Voltage Range: 2.495V to 36V
• Output Current: 100mA
• Temperature Range: -40°C to +85°C
• Line Regulation: 0.2% (Typical)
• Load Regulation: 0.4% (Typical)
• Reference Voltage Tolerance: ±1%
• Cathode Current: 1mA to 100mA

Detailed Pin Configuration

The TL431AQDBVRG4 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 adjustable reference voltage.

Functional Features

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

Advantages and Disadvantages

Advantages

• Easy to use and implement in various applications.
• Provides a stable and accurate reference voltage.
• Can be adjusted to meet specific requirements.
• Suitable for both low and high voltage applications.
• Cost-effective solution.

Disadvantages

• Limited output current capability.
• Requires external components for proper operation.
• Sensitivity to noise and fluctuations in the input voltage.

Working Principles

The TL431AQDBVRG4 is a precision shunt regulator that operates by comparing the reference voltage at the Reference (R) pin with the voltage across the Anode (A) and Cathode (K) pins. By adjusting the resistive divider connected to the Reference pin, the output voltage can be set to a desired value. The TL431AQDBVRG4 then regulates the voltage across the Cathode and Anode pins to match the reference voltage.

Detailed Application Field Plans

The TL431AQDBVRG4 is widely used in various applications, including:

1. Voltage Regulation: It can be used as a precision voltage reference for regulating power supplies, battery chargers, and DC-DC converters.
2. Feedback Control: It is commonly employed in feedback control circuits to maintain stable and accurate voltage levels.
3. Battery Management: It finds application in battery management systems to monitor and regulate battery charging and discharging processes.
4. Audio Amplifiers: It is utilized in audio amplifiers to provide biasing and voltage stabilization.
5. LED Lighting: It is used in LED lighting systems to ensure consistent brightness and color accuracy.

Detailed and Complete Alternative Models

Some alternative models to the TL431AQDBVRG4 include:

1. TL431BQDBZR: SOT-23 package, adjustable precision shunt regulator.
2. TLVH431AQDBZR: SOT-23 package, low-voltage adjustable precision shunt regulator.
3. TL432AQDBVRG4: SOT-23 package, adjustable precision shunt regulator with a higher reference voltage range.

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

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