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The TL431ACDBVT is an adjustable precision shunt regulator from Texas Instruments, housed in a five-pin SOT-23 (SC-74A) surface-mount package. It provides an output voltage range of 2.495V to 36V with an initial accuracy of ±1%. The device supports a maximum cathode current of 100mA and operates within a temperature range of 0°C to 70°C. It features a typical temperature coefficient of 92 ppm/°C and requires a minimum cathode current of 600µA for regulation.
Verify the specific suffix DBVT confirms the five-pin SOT-23 package and tape-and-reel packaging format. Confirm the AC grade designation matches the required ±1% accuracy specification. Ensure the operating temperature range aligns with the 0°C to 70°C industrial rating. Check RoHS compliance status if environmental regulations apply to the target assembly process.
Select this component when a low-cost, high-accuracy shunt regulator is needed for space-constrained designs. The five-pin SOT-23 package offers thermal and electrical advantages over standard three-pin variants. Consider the 100mA current capability for driving moderate loads or optocouplers. Verify that the 0°C to 70°C temperature range meets the application's environmental requirements.
This part belongs to the widely used TL431 family of programmable shunt regulators. It serves as a direct replacement for legacy discrete zener diode references, offering superior stability and lower temperature drift. The device is commonly integrated into switching power supplies and linear regulators to maintain precise output voltage levels under varying load conditions.
TL431ACDBVTG4 is a documented direct substitute for this component.