TL431ACDBZT
Texas InstrumentsUnited States

TL431ACDBZT

ActiveVoltage ReferenceSOT-23

IC VREF SHUNT ADJ 1% SOT23-3

TL431ACDBZT is a precision programmable shunt regulator with a reference voltage of approx. 2.5V, adjustable output up to 36V, in SOT-23-3 package, operating from 0°C to 70°C, featuring low output impedance and 100mA sink current capability.Checked against the datasheet

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Technical parameters

Datasheet-verified parameters

19 items
ParameterValue and test conditionsSource
PackageSOT-23 (DBZ), 3 Pins
Operating Temperature0 to 70 °C
RoHSYes
Reference VoltageMin: 2470 mV, Typ: 2495 mV, Max: 2520 mV (V_KA = V_ref, I_KA = 10mA, T_A = 25°C)
Cathode VoltageMin: V_ref, Max: 36 V
Continuous Cathode CurrentMin: 1 mA, Max: 100 mA
Dynamic ImpedanceTyp: 0.2 Ω, Max: 0.5 Ω (V_KA = V_ref, f ≤ 1kHz, I_KA = 1mA to 100mA)
Reference Input CurrentMin: 2 μA, Typ: 4 μA (I_KA = 10mA, R1 = 10kΩ, R2 = ∞)
Minimum Cathode CurrentMin: 0.4 mA, Typ: 0.7 mA (V_KA = V_ref)
Off-state Cathode CurrentMin: 0.1 μA, Typ: 0.5 μA (V_KA = 36V, V_ref = 0)
Absolute Maximum Rating: Cathode VoltageMax: 37 V
Absolute Maximum Rating: Continuous Cathode CurrentMin: -100 mA, Max: 150 mA
Absolute Maximum Rating: Operating Junction TemperatureMax: 150 °C
Absolute Maximum Rating: Storage TemperatureMin: -65 °C, Max: 150 °C
Thermal Resistance: Junction-to-ambient206 °C/W (DBZ package)
Thermal Resistance: Junction-to-case (top)76 °C/W (DBZ package)
Initial Accuracy1% (A grade)
Number of Pins3
Package Body Size2.90mm × 1.30mm (Nominal)
All parameters (21)ExpandCollapse
Power
Current - Cathode600 µA
Current - Output100 mA
Current - Supply-
Voltage - Input-
Voltage - Output (Max)36 V
Voltage - Output (Min/Fixed)2.495V
AC and DC characteristics
Noise - 0.1Hz to 10Hz-
Noise - 10Hz to 10kHz-
Environment and package
Mounting TypeSurface Mount
Operating Temperature0°C~70°C(TA)
PackageTape & Reel (TR); Cut Tape (CT); Digi-Reel®
Package / CaseTO-236-3, SC-59, SOT-23-3
Supplier Device PackageSOT-23-3
Temperature Coefficient-
Other
Base Product NumberTL431
MfrTexas Instruments
Output TypeAdjustable
Product StatusActive
Reference TypeShunt
Series-
Tolerance±1%

Pinout and package

PackageSOT-23 (DBZ), 3 Pins

PinNameFunctionSource
1CATHODE: Shunt Current/Voltage input
2REF: Threshold relative to common anode
3ANODE: Common pin, normally connected to ground

Documents

DatasheetDatasheet · 2.9 MB · 2026-10-28
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