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Texas Instruments TLV431BQDBVR — Analog & Data Acquisition

TLV431BQDBVR Shunt Voltage Reference, 1.24 V ±0.5%, SOT-23-5

MPNTLV431BQDBVR
Active

Texas Instruments TLV431BQDBVR, adjustable shunt voltage reference, 1.24 V min output, ±0.5% tolerance, 15 mA output, 100 µA cathode, SOT-23-5, -40°C to 125°C.

$0.8500Ref. price · indicative, final on quote
Texas Instruments TLV431BQDBVR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TLV431BQDBVR specifications
ParameterValue
Output typeAdjustable
MountingSurface Mount
Reference typeShunt
Voltage - output6 V
Voltage - output (Min (Fixed))1.24V
Output current15 mA
Current - cathode100 µA
Operating temperature-40°C~125°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Tolerance±0.5%
CaseSC-74A, SOT-753

Product details

Precision shunt reference for tight-regulation loops

The TLV431BQDBVR is an adjustable shunt voltage reference from Texas Instruments, with a minimum output of 1.24 V and a ±0.5% tolerance that holds the regulation band tight across temperature. It is a three-terminal device — cathode, anode, and reference — that behaves like a low-temperature-coefficient Zener when the reference pin is tied to the output, or as a programmable shunt when a resistor divider sets the voltage up to 6 V.

Industrial temperature range and output drive

The shunt can sink up to 15 mA continuous, enough to bias an optocoupler in a flyback feedback loop or pull down a supervisory reset line.

Frequently asked questions

Is TLV431BQDBVR an adjustable or fixed voltage reference?

Adjustable. The output is set by two external resistors connected to the reference pin. The internal bandgap produces a 1.24 V threshold at the reference input, and the shunt regulates the cathode voltage to maintain that threshold.