TLVH431AIDBVRE4

Overview

The TLVH431AIDBVRE4 is a low-voltage adjustable precision shunt regulator from the TLVH431A series by Texas Instruments. It operates within an input voltage range up to 20 V and provides an adjustable output voltage up to 18 V. The device features an initial accuracy of 1% and a temperature coefficient of 138 ppm/°C. It supports a maximum shunt current of 80 mA with a minimum operating current of 80 µA. The component functions across a temperature range of -40°C to +125°C and is housed in a SOT-23-5 surface-mount package.

Feature Summary

• Adjustable output voltage capability spanning from the internal reference level up to 18 V via external resistors
• High thermal stability maintained across extended industrial temperature ranges
• Low minimum cathode current requirement enabling efficient operation in light-load conditions

Applications

• Secondary side regulation in flyback switch-mode power supplies
• Isolated feedback circuits for low-voltage power systems
• Precision voltage references for analog-to-digital converters
• Voltage monitoring and window comparator applications

Procurement Notes

Verify the specific suffix RE4 indicates cut-tape packaging when sourcing. Confirm the A-grade accuracy specification matches design requirements. Ensure the SOT-23-5 footprint aligns with the PCB layout. Check for RoHS compliance documentation if required by assembly standards. Validate the 20 V maximum rating against peak circuit voltages.

Selection Notes

Select this component for applications requiring higher voltage tolerance than standard TLV431 devices. The 80 mA current capacity suits moderate load regulation needs. Consider the SOT-23-5 package for space-constrained designs. Verify that the 138 ppm/°C drift meets system precision goals. Compare against TLVH431 variants if automotive qualification or different accuracy grades are needed.

Part Context

This part belongs to the TLVH431 family, designed as a drop-in replacement for traditional TL431 regulators but optimized for lower voltage operation. It integrates a bandgap reference and error amplifier in a compact surface-mount form factor. The series targets cost-sensitive power management solutions where high precision and wide operating voltage ranges are essential.

Replacement Considerations

Direct substitutes include TLVH431AIDBVTG4 and TLVH431AIDBVRG4. These share identical electrical characteristics and pinouts. Verify package compatibility before substitution. Ensure the replacement maintains the same accuracy grade and temperature range specifications.