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Texas Instruments TL432QPKG3 — Analog & Data Acquisition

TL432QPKG3 Shunt Voltage Reference, Adjustable 2.495V–36V

MPNTL432QPKG3
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Texas Instruments TL432QPKG3 shunt voltage reference, adjustable output 2.495 V to 36 V, ±2.2% tolerance, 100 mA cathode current, SOT-89-3 surface-mount package, -40°C to 125°C operating range.

$0.5000Ref. price · indicative, final on quote
Texas Instruments TL432QPKG3 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TL432QPKG3 specifications
ParameterValue
Output typeAdjustable
MountingSurface Mount
Reference typeShunt
Voltage - output36 V
Voltage - output (Min (Fixed))2.495V
Output current100 mA
Current - cathode1 mA
Operating temperature-40°C~125°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Tolerance±2.2%
CaseTO-243AA

Product details

Adjustable shunt reference in SOT-89-3

It provides a 2.495 V internal reference and can be programmed via two external resistors to any output voltage between 2.495 V and 36 V. The shunt regulator sinks up to 100 mA through the cathode, making it suitable for driving optocouplers in isolated power supplies or clamping overvoltage on a rail.

Reference tolerance and thermal range

Tolerance is specified at ±2.2 %, a tighter bin than the standard 2.5 % grade found on many TL431 variants. This reduces worst-case feedback error in precision power supplies and battery chargers. The SOT-89-3 package with a copper pad area under the tab helps dissipate heat when sinking continuous cathode current.

Frequently asked questions

Is TL432QPKG3 equivalent to TL431?

Functionally yes — both are adjustable shunt references with the same 2.495 V internal reference and similar pinout. The TL432QPKG3 offers a tighter ±2.2% tolerance and comes in the smaller SOT-89-3 package, whereas the TL431 is commonly found in TO-92 or SOT-23. Pin-compatibility depends on the package; for a drop-in replacement, confirm the pin assignment on your board.