TLV431BCDBZTG4

Product Overview

• Category: Integrated Circuits
• Use: Voltage Reference
• Characteristics: Low-voltage adjustable precision shunt regulator
• Package: SOT-23 (Small Outline Transistor)
• Essence: Precision voltage reference with adjustable output
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Reference Voltage Range: 1.24V to 6V
• Output Current: 1mA to 100mA
• Operating Temperature Range: -40°C to +85°C
• Line Regulation: 0.2% (typical)
• Load Regulation: 0.4% (typical)
• Initial Accuracy: ±1%
• Temperature Stability: ±50ppm/°C (typical)

Detailed Pin Configuration

The TLV431BCDBZTG4 has three pins:

1. Anode (A): Connected to the positive terminal of the input voltage.
2. Cathode (K): Connected to the negative terminal of the input voltage.
3. Reference (R): Provides the adjustable output voltage.

Functional Features

• Adjustable output voltage allows for precise voltage regulation.
• Low operating current consumption.
• High accuracy and stability over temperature and load variations.
• Fast response time to changes in input voltage.
• Low output impedance for improved performance.

Advantages and Disadvantages

Advantages

• Wide range of adjustable output voltages.
• Excellent line and load regulation.
• Low temperature coefficient.
• Small package size for space-constrained applications.
• Cost-effective solution for voltage reference needs.

Disadvantages

• Limited maximum output current.
• Requires external resistors for voltage adjustment.
• Sensitivity to input voltage fluctuations.

Working Principles

The TLV431BCDBZTG4 is a precision shunt regulator that maintains a stable output voltage regardless of input voltage variations. It operates by comparing the reference voltage at the Reference (R) pin with an internal voltage divider network. By adjusting the resistors connected to the Reference (R) pin, the output voltage can be set within the specified range.

When the input voltage exceeds the desired output voltage, the TLV431BCDBZTG4 starts conducting current through the cathode (K) and anode (A) pins, effectively shunting excess current away from the load. This ensures that the output voltage remains constant even under varying input conditions.

Detailed Application Field Plans

The TLV431BCDBZTG4 finds applications in various fields, including:

1. Power Supplies: Provides stable voltage references for power supply circuits.
2. Battery Management: Ensures accurate voltage monitoring and regulation in battery-powered devices.
3. Audio Amplifiers: Maintains precise biasing voltages for improved audio performance.
4. Instrumentation: Offers reliable voltage references for measurement and control systems.
5. Automotive Electronics: Provides voltage stability in automotive applications such as sensors and control modules.

Detailed and Complete Alternative Models

1. TL431ACDBZR: Similar specifications and package, but without tape and reel packaging.
2. TLV431AIDBVR: SOT-23 package with slightly different pin configuration but comparable performance.
3. LM4040AIM3-2.5/NOPB: Precision voltage reference with fixed 2.5V output, available in SOT-23 package.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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