TLV431QPK

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage References

Characteristics: - Adjustable Precision Shunt Regulator - Low Output Voltage Tolerance: ±0.5% - Low Dynamic Output Impedance: 0.25 Ω - Wide Operating Current Range: 1 µA to 100 mA - Low Temperature Coefficient: 50 ppm/°C - Sink Current Capability: 1 mA to 100 mA - Package Type: SC-70 (SOT-323) - RoHS Compliant

Package and Quantity: - Package Type: SC-70 (SOT-323) - Packaging: Tape & Reel - Quantity per Reel: 3000 units

Specifications

• Reference Voltage Range: 1.24 V to 6 V
• Operating Current Range: 1 µA to 100 mA
• Temperature Range: -40°C to +125°C
• Initial Accuracy: ±0.5%
• Temperature Stability: 50 ppm/°C
• Dynamic Output Impedance: 0.25 Ω

Pin Configuration

The TLV431QPK has the following pin configuration:

____ NC | | GND NC | | REF NC | | TRIM NC | | NC NC | | NC NC | | NC NC | | NC NC |____| NC

Functional Features

• Adjustable output voltage reference
• High precision and stability
• Low temperature coefficient
• Low dynamic output impedance
• Sink current capability for driving loads

Advantages

• Wide operating current range allows flexibility in various applications
• Low output voltage tolerance ensures accurate voltage references
• Small package size (SC-70) enables space-saving designs
• RoHS compliant, environmentally friendly

Disadvantages

• Limited output voltage range (1.24 V to 6 V)
• Not suitable for high current applications (>100 mA)

Working Principles

The TLV431QPK is an adjustable precision shunt regulator that provides a stable reference voltage. It operates by comparing the reference voltage at the REF pin with an internal bandgap reference. By adjusting the TRIM pin voltage, the output voltage can be set within the specified range. The device sinks current from the load, maintaining a stable output voltage.

Application Field Plans

The TLV431QPK is widely used in various applications, including but not limited to: - Voltage references in power supplies and battery management systems - Precision voltage regulation in industrial control systems - Current limiting circuits in LED drivers - Overvoltage protection circuits in automotive electronics

Alternative Models

Some alternative models that can be considered as replacements for the TLV431QPK are: - TL431AQDBZR - LM4040DIM3X-2.5/NOPB - MAX6126AASA25+

These models offer similar functionality and characteristics, providing alternatives for different design requirements.

In conclusion, the TLV431QPK is a versatile voltage reference IC with adjustable precision and stability. Its wide operating current range and small package size make it suitable for various applications. However, designers should consider its limited output voltage range and current capability when selecting alternative models.