TLV431AH6TA

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage References

Characteristics: - Adjustable Precision Shunt Regulator - Low Output Voltage Tolerance: ±0.5% - Low Dynamic Output Impedance: 0.22Ω - Wide Operating Current Range: 1µA to 100mA - Low Temperature Coefficient: 50ppm/°C - Low Output Noise Voltage: 40µVRMS (10Hz to 100kHz) - Low Dropout Voltage: 0.6V (at 10mA) - Fast Turn-On Response Time: 2µs (typical)

Package: SOT-23-3

Essence: The TLV431AH6TA is a precision shunt regulator that provides a stable reference voltage. It is commonly used in various electronic circuits where a precise voltage reference is required.

Packaging/Quantity: The TLV431AH6TA is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Reference Voltage: Adjustable from 1.24V to 16V
• Operating Current Range: 1µA to 100mA
• Temperature Range: -40°C to +125°C
• Input Voltage Range: -0.3V to 18V
• Output Voltage Range: 1.24V to 16V
• Dropout Voltage: 0.6V (at 10mA)
• Output Noise Voltage: 40µVRMS (10Hz to 100kHz)
• Temperature Coefficient: 50ppm/°C

Detailed Pin Configuration

The TLV431AH6TA has three pins:

1. Anode (A): Connected to the input voltage.
2. Cathode (K): Connected to the ground or reference voltage.
3. Reference (REF): Provides the stable reference voltage.

Functional Features

• Adjustable Output Voltage: The TLV431AH6TA allows users to adjust the output voltage according to their specific requirements.
• Low Dropout Voltage: With a dropout voltage of only 0.6V, the TLV431AH6TA can operate efficiently even with low input-output voltage differentials.
• Low Output Noise: The regulator provides a low output noise voltage, making it suitable for applications requiring high precision.
• Wide Operating Current Range: The TLV431AH6TA can handle a wide range of operating currents, from 1µA to 100mA.
• Fast Turn-On Response Time: The regulator has a quick turn-on response time of 2µs, ensuring rapid stabilization of the output voltage.

Advantages and Disadvantages

Advantages: - High precision and stability - Wide operating current range - Low dropout voltage - Fast response time - Low output noise

Disadvantages: - Limited output voltage range (1.24V to 16V) - SOT-23-3 package may require additional space in compact designs

Working Principles

The TLV431AH6TA operates as a shunt regulator, maintaining a stable reference voltage between its reference pin (REF) and cathode (K). By adjusting the resistor divider network connected to the REF pin, the output voltage can be set within the specified range. The TLV431AH6TA compares the reference voltage with the input voltage and adjusts the current flowing through it to maintain a constant output voltage.

Detailed Application Field Plans

The TLV431AH6TA is widely used in various electronic applications, including:

1. Voltage References: It serves as a precise voltage reference in analog-to-digital converters, digital-to-analog converters, and other circuits requiring accurate voltage references.
2. Power Supplies: It can be used in linear power supplies to regulate the output voltage and improve stability.
3. Battery Management Systems: The TLV431AH6TA is employed in battery charging circuits to maintain a constant voltage during the charging process.
4. Audio Amplifiers: It finds application in audio amplifiers to provide stable bias voltages for improved audio quality.

Detailed and Complete Alternative Models

1. TL431AQDBZR: Similar to TLV431AH6TA, but available in SOT-23-5 package.
2. TLVH431AIDBZR: Higher precision version with ±0.25% output voltage tolerance.
3. TLV431BQDBZR: Lower temperature coefficient variant with 20ppm/°C temperature coefficient.

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

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