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TL431BCDRG4
Texas Instruments

TL431BCDRG4 Shunt Voltage Reference, ±0.5%, 8-SOIC

MPNTL431BCDRG4
End of Life

Texas Instruments TL431BCDRG4 adjustable shunt voltage reference, ±0.5% tolerance, 100 mA output, 2.495 V to 36 V, 8-SOIC package, 0°C to 70°C.

TL431BCDRG4 datasheet
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Specifications

TL431BCDRG4 Technical Specifications
ParameterValue
Output typeAdjustable
Mounting typeSurface Mount
Reference typeShunt
Voltage - output36 V
Voltage - output (Min (Fixed))2.495V
Current - output100 mA
Current - cathode600 µA
Operating temperature0°C~70°C(TA)
PackageTape & Reel (TR)
Tolerance±0.5%
Case8-SOIC (0.154\", 3.90mm Width)

Product details

Adjustable shunt reference, ±0.5% — the B-grade precision pick

Output voltage is set with two external resistors from a minimum of 2.495 V up to 36 V, and the device sinks up to 100 mA with a typical cathode current of 600 µA.

100 mA output, 600 µA cathode — load and bias headroom

The 100 mA output current rating defines the load-driving capability — enough to bias optocouplers, power supervisor inputs, or supply a small analog rail. The 600 µA cathode current sets the minimum bias for regulation; designs must ensure the cathode current stays above this floor to maintain the ±0.5% accuracy.

Frequently asked questions

What is the accuracy of TL431BCDRG4?

The TL431BCDRG4 offers a ±0.5% initial tolerance, the B-grade precision tier in the TL431 family. This is tighter than the standard 1% or 2% grades and suitable for reference rails in precision analog circuits.