TLVH431AIL3T

Product Overview

The TLVH431AIL3T from STMicroelectronics is a surface-mount shunt voltage reference IC for adjustable output regulation. It is specified with a minimum output voltage of 1.24 V and a maximum output voltage of 18 V, allowing the reference level to be set within that range while maintaining a ±0.5% tolerance. The device package is SOT-23-3, also identified as TO-236-3 and SC-59, and it supports an output current rating of 60 mA. Its shunt topology provides a reference at a defined node, and the adjustable output supports reference setting. The operating temperature range is -40°C to 125°C (TA), and the temperature coefficient is 100 ppm/°C. A 200 µA cathode current is specified, which is relevant to biasing and operating-point considerations in shunt-reference circuits.

Key Features

• Shunt voltage reference IC with adjustable output, specified from 1.24 V minimum to 18 V maximum.
• Tolerance of ±0.5% supports precision reference settings within the adjustable output range.
• 60 mA output current rating and 200 µA cathode current define key operating parameters for circuit design.
• Temperature coefficient of 100 ppm/°C and operating range of -40°C to 125°C (TA) characterize thermal behavior.
• SOT-23-3 surface-mount package, also described as TO-236-3 and SC-59.
• Noise specification of 30 mVrms over 10 Hz to 10 kHz supports reference-noise analysis.

Applications

• Providing an adjustable reference voltage in power-management circuits where a fixed or settable node voltage is required.
• Serving as a reference input for DC-DC converter feedback networks that require a defined voltage level within the 1.24 V to 18 V range.
• Establishing a stable comparison point in analog signal-conditioning stages, such as sensor interfaces or measurement front ends.

Design & Procurement Notes

When selecting the TLVH431AIL3T for a design, confirm that the required reference voltage falls between 1.24 V and 18 V and that circuit conditions are compatible with the 60 mA output current and 200 µA cathode current specifications. The ±0.5% tolerance and 100 ppm/°C temperature coefficient should be considered together with the system accuracy budget, especially across the -40°C to 125°C (TA) operating range. The 30 mVrms noise over 10 Hz to 10 kHz is a relevant parameter for sensitive analog nodes. Because the device uses a SOT-23-3 surface-mount package, footprint and land pattern should be reviewed during layout.