TLVH431BCDBVT

Overview

The TLVH431BCDBVT is a low-voltage adjustable precision shunt regulator manufactured by Texas Instruments. It operates within a voltage range of 1.24 V to 18 V and features an initial accuracy of 0.5%. The device supports a maximum cathode current of 80 mA with a minimum operating current of 80 µA. It has a maximum supply voltage of 20 V and a temperature coefficient of 138 PPM/C. The component functions across a temperature range of -40°C to +125°C and is housed in an SOT-23-5 surface-mount package.

Feature Summary

• Provides adjustable output voltage capability from 1.24 V to 18 V via external resistor dividers
• Ensures high precision with 0.5% initial accuracy for stable reference applications
• Supports wide operating current range from 80 µA to 80 mA for flexible power management
• Maintains thermal stability over extended industrial temperature ranges

Applications

• Battery-operated equipment requiring precise voltage monitoring
• Switch-mode power supplies utilizing feedback regulation
• Data acquisition systems needing accurate reference voltages
• Portable devices where space-saving surface mount packages are critical

Procurement Notes

Verify the specific suffix 'E4' often associated with this part number for lead-free compliance and RoHS status. Confirm the exact package variant matches design requirements, as TI may update packaging or assembly sites through PCN notices. Check distributor availability as stock levels fluctuate. Ensure the ordering code aligns with the required temperature grade and accuracy tolerance specified in the final schematic.

Selection Notes

Select this component when a low-voltage adjustable reference with high precision is required in a compact footprint. The 0.5% accuracy suits applications demanding tight voltage tolerances. Consider the SOT-23-5 package for space-constrained PCB layouts. Evaluate the 80 mA sink current capability against load requirements. Compare against standard TL431 variants if lower voltage operation is necessary.

Part Context

This device belongs to the TLVH431B series of low-voltage adjustable shunt regulators. It serves as a modern alternative to traditional three-terminal references, offering improved performance in low-voltage environments. The series is designed for power management applications where efficiency and size are prioritized. It integrates precision bandgap technology within a small surface-mount form factor.

Replacement Considerations

Direct substitutes include other TLVH431B variants with different package options such as TLVH431BQDBVR. For non-automotive grades, verify compatibility with TLVH431BCDBZTG4. Standard TL431 devices may require circuit adjustments due to higher voltage and current differences.