TLVH431BIDBZT

Overview

The TLVH431BIDBZT is a low-voltage adjustable precision shunt voltage reference manufactured by Texas Instruments. It operates within a supply voltage range of up to 20 V and provides an adjustable output voltage between 1.24 V and 18 V. The device features an initial accuracy of 0.5% and a maximum temperature coefficient of 138 ppm/°C. It supports a maximum cathode current of 80 mA with a minimum operating current of 80 µA. The component functions reliably across an extended temperature range from -40°C to +125°C and is housed in a compact SOT-23-3 surface-mount package.

Feature Summary

• Adjustable output voltage capability via external resistor divider
• High precision with 0.5% initial accuracy tolerance
• Extended industrial temperature stability over -40°C to +125°C
• Low power consumption with minimal operating current

Applications

• Portable battery-powered equipment requiring precise voltage regulation
• Power supply feedback loops for accurate voltage monitoring
• Temperature compensation circuits in industrial control systems
• Current limiting applications in power management designs

Procurement Notes

Verify the specific suffix 'G4' for RoHS compliance status, as datasheets may list variants like TLVH431BIDBZTG4. Confirm availability through authorized distributors, noting that some listings indicate limited stock or end-of-life status for certain revisions. Ensure the ordering part number matches the required accuracy grade and package type to avoid functional mismatches in production.

Selection Notes

Select this component when a high-precision, low-cost shunt regulator is needed for space-constrained designs. The SOT-23-3 package offers a small footprint suitable for dense PCB layouts. Consider the 0.5% accuracy and 138 ppm/°C temperature coefficient for applications demanding stable reference voltages without active temperature compensation. Ensure the load current requirements do not exceed the 80 mA cathode current limit.

Part Context

This part belongs to the TLVH431 family of low-voltage adjustable shunt regulators designed for cost-sensitive and space-limited applications. The series includes variants with different accuracy grades (1%, 1.5%) and packages (SOT-23-5, SC-70-6). The TLVH431BIDBZT specifically represents the B-grade accuracy variant in the smallest three-pin surface-mount package, balancing performance with manufacturing efficiency.

Replacement Considerations

Compatible substitutes include TLVH431AIL3T and TLVH431IDBZT, though these offer lower accuracy grades (1% and 1.5% respectively). Verify pinout compatibility and thermal characteristics before substitution. Automotive-grade alternatives like TLVH431BQDBZRQ1G4 are available if AEC-Q100 qualification is required.