TLVH431BIL3T

Product Overview

The TLVH431BIL3T from STMicroelectronics is a surface-mount shunt voltage reference with an adjustable output. It provides a minimum/fixed output of 1.24 V and can be adjusted up to 18 V, with a stated output current capability of 60 mA. The device is offered in a SOT-23-3 package and is specified for operation from -40°C to 125°C ambient. Key electrical characteristics include ±0.25% tolerance, a 100 ppm/°C temperature coefficient, 30 mVrms noise over 10 Hz to 10 kHz, and a 200 µA cathode current.

Key Features

• Shunt voltage reference with adjustable output from 1.24 V to 18 V
• ±0.25% tolerance and 100 ppm/°C temperature coefficient
• 60 mA output current and 200 µA cathode current
• 30 mVrms noise specified from 10 Hz to 10 kHz
• Surface-mount SOT-23-3 package for -40°C to 125°C ambient operation

Applications

• Reference voltage generation for analog-to-digital converter input stages
• Stable biasing in power-supply control and regulation circuits
• Voltage reference support for sensor signal conditioning and measurement front ends
• Precision reference point in calibration and instrumentation circuits

Design & Procurement Notes

When selecting this shunt reference, confirm that the required output can be set within the 1.24 V to 18 V adjustable range and that the circuit provides adequate cathode current and output current headroom. The ±0.25% tolerance, 100 ppm/°C coefficient, and 30 mVrms noise figure should be evaluated against system accuracy and signal integrity requirements, especially across the -40°C to 125°C ambient range. The SOT-23-3 surface-mount package requires a compatible footprint and thermal path, and layout should account for reference stability in analog and power-management environments.