Original Part
Alternative Part
1. TLV431ACDBVR Substitution Conclusion
The TLV431ACDBVR can conditionally substitute the TS431ILT, with critical evaluation required for output current and power dissipation compatibility. Key differences include: output current reduced to 15mA (compared to 30mA for the TS431), which may preclude direct replacement in applications with higher load current; improved accuracy of ±1% (versus ±2% for the TS431), beneficial for enhancing system reference voltage precision; and increased cathode current of 80µA (TS431: 60µA), leading to a slight rise in quiescent power dissipation—this requires careful validation in low-power scenarios such as battery-powered systems. If the actual operating current is ≤15mA and the marginal increase in power dissipation is acceptable, its higher accuracy and compatible package (SOT-23-5) support the substitution.
2. TLV431IDBVR Substitution Conclusion
The TLV431IDBVR also presents a feasible conditional substitution, though attention must be paid to accuracy and current compatibility. Its output current of 15mA is lower than the TS431’s 30mA, limiting suitability in high-load-current applications; accuracy is ±1.5% (between the TS431’s ±2% and the TLV431A’s ±1%), sufficient for most general precision requirements; the cathode current remains higher at 80µA than the TS431, resulting in a modest increase in quiescent power. If the application demands ≤15mA output current and ±1.5% accuracy is adequate, its pin compatibility and identical adjustable voltage range support substitution. However, temperature drift characteristics must be verified in the design (the TS431 specifies 100ppm/°C, while the TLV431 does not provide a defined rating).
Analysis ID: 18C3-8EC3000
Based on part parameters and for reference only. Not to be used for procurement or production.
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