TL431BVDMR2G

Product Overview

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

Specifications

The TL431BVDMR2G is an integrated circuit voltage reference that operates as a precision shunt regulator. It provides a stable reference voltage with adjustable output through an external resistor divider network. The device is designed to be used in a wide range of applications where precise voltage regulation is required.

The TL431BVDMR2G is packaged in a small SOT-23-3 package, making it suitable for space-constrained designs. It can operate over a temperature range of -40°C to +85°C, ensuring reliable performance in various environments.

Pin Configuration

The TL431BVDMR2G features three pins arranged in the following configuration:

1. Anode (A): Connected to the positive supply voltage.
2. Cathode (K): Connected to the load or ground.
3. Reference (R): Connected to the external resistor divider network.

Functional Features

• Adjustable Output: The TL431BVDMR2G allows the user to set the desired output voltage by connecting an external resistor divider network.
• Precision Voltage Reference: The device provides a highly accurate reference voltage with low temperature drift and excellent long-term stability.
• Low Quiescent Current: The TL431BVDMR2G consumes very low current when not actively regulating the voltage, minimizing power consumption.
• Wide Operating Range: The device can operate over a wide range of input voltages, making it suitable for various applications.

Advantages and Disadvantages

Advantages

• High precision and stability
• Adjustable output voltage
• Low quiescent current
• Wide operating range
• Small package size

Disadvantages

• Requires an external resistor divider network for voltage adjustment
• Limited maximum output current

Working Principles

The TL431BVDMR2G operates based on the principle of a shunt regulator. It compares the reference voltage at the Reference pin with the voltage across the external resistor divider network. By adjusting the resistance values in the divider network, the output voltage can be set to the desired level.

When the output voltage exceeds the reference voltage, the TL431BVDMR2G starts conducting current through its internal transistor, effectively shunting excess current to ground. This maintains a stable output voltage regardless of load variations.

Detailed Application Field Plans

The TL431BVDMR2G finds applications in various fields where precise voltage regulation is required. Some common application areas include:

1. Power Supplies: The device can be used in linear power supplies to provide accurate voltage references for control circuits.
2. Battery Charging: It can be employed in battery charging circuits to maintain a constant voltage during the charging process.
3. Audio Amplifiers: The TL431BVDMR2G can be utilized in audio amplifiers to regulate bias voltages and ensure consistent performance.
4. Voltage Monitors: It can serve as a voltage monitor in systems that require precise voltage thresholds for fault detection or protection.

Detailed and Complete Alternative Models

• TL431ACLP
• TL431BQDBZR
• TL431CDR2G
• TL431IDBZT
• TL431AIDBZR

These alternative models offer similar functionality and characteristics to the TL431BVDMR2G, providing flexibility in design choices.

In conclusion, the TL431BVDMR2G is a versatile integrated circuit voltage reference that offers adjustable precision voltage regulation. Its small package size, low quiescent current, and wide operating range make it suitable for a variety of applications in different fields.