TLV431AID: Precision Shunt Adjustable Voltage Reference IC by Texas Instruments
TLV431AID: Precision Shunt Adjustable Voltage Reference IC by Texas Instruments
The TLV431AID from Texas Instruments is a high-accuracy, low-power shunt voltage reference IC designed for precision voltage regulation in modern electronic systems. As part of TI's extensive PMIC portfolio, this device offers exceptional performance with adjustable output voltage capability, making it a versatile solution for designers across industries.
Comprehensive Product Overview
The TLV431AID represents the next generation of shunt voltage references, combining precision engineering with flexible design options. This surface-mount IC comes in an 8-SOIC package (3.90mm width) and features:
- Wide adjustable output range: 1.24V to 6V
- Exceptional accuracy: 1% voltage reference tolerance
- Ultra-low power operation: 80 A typical cathode current
- Extended temperature range: -40 C to +85 C operation
- Improved stability: Low output noise characteristics
In-Depth Technical Specifications
| Parameter | Specification |
|---|---|
| Reference Type | Shunt (Adjustable) |
| Output Voltage Range | 1.24V to 6V |
| Initial Accuracy | 1% |
| Temperature Coefficient | Typical 50ppm/ C |
| Cathode Current | 80 A (Typical) |
| Output Current Capability | Up to 15mA |
| Operating Temperature | -40 C to +85 C |
| Package | 8-SOIC |
Advanced Applications
The TLV431AID finds application in numerous precision electronic systems:
1. Power Supply Regulation
Provides stable reference voltages for:
- Switching power supplies
- Linear regulators
- Voltage monitoring circuits
2. Battery-Powered Systems
Ideal for:
- Battery charge controllers
- Low-voltage cutoff circuits
- Portable device power management
3. Precision Measurement
Used in:
- Data acquisition systems
- ADC/DAC reference circuits
- Test and measurement equipment
4. Automotive Electronics
Reliable performance for:
- ECU voltage references
- Sensor interfaces
- Infotainment systems
Design Advantages
The TLV431AID offers significant benefits for electronic designers:
- Enhanced Precision: The 1% initial accuracy and low temperature drift ensure stable performance over time and temperature variations.
- Design Flexibility: Adjustable output voltage allows customization for specific application requirements.
- Power Efficiency: Ultra-low cathode current minimizes power consumption in battery-operated devices.
- Space Savings: Compact SOIC-8 package enables high-density PCB layouts.
- Reliability: Robust design ensures consistent performance in demanding environments.
Comparative Analysis
When compared to similar devices like the TL431, the TLV431AID offers:
- Lower minimum operating current (80 A vs. 400 A)
- Wider temperature range
- Improved accuracy specifications
- Better performance in low-voltage applications
Implementation Guidelines
For optimal performance with the TLV431AID:
- Use proper decoupling capacitors close to the device
- Maintain short trace lengths for reference connections
- Consider thermal management in high-current applications
- Follow Texas Instruments' layout recommendations
Purchasing Information
The TLV431AID is available through authorized Texas Instruments distributors. Typical lead times and packaging options include:
- Cut Tape
- Reel (2500 pieces)
- Sample quantities
Conclusion
The TLV431AID from Texas Instruments represents an optimal solution for designers needing precision voltage references in space-constrained, power-sensitive applications. Its combination of accuracy, flexibility, and reliability makes it suitable for a wide range of industrial, automotive, and consumer applications. For engineers seeking a high-performance shunt voltage reference, the TLV431AID delivers exceptional value and performance.
For technical support, reference designs, or additional product information, visit the official Texas Instruments website or contact authorized distributors.