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Texas Instruments TL432ACDBZT — Analog & Data Acquisition

TL432ACDBZT Adjustable Shunt Reference, 2.495V–36V, ±1%

MPNTL432ACDBZT
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Texas Instruments TL432ACDBZT, adjustable shunt voltage reference, 2.495V to 36V output, ±1% tolerance, 100 mA output, 600 µA cathode current, SOT-23-3 package, 0°C to 70°C.

$0.9400Ref. price · indicative, final on quote
Texas Instruments TL432ACDBZT datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TL432ACDBZT specifications
ParameterValue
Output typeAdjustable
MountingSurface Mount
Reference typeShunt
Voltage - output36 V
Voltage - output (Min (Fixed))2.495V
Output current100 mA
Current - cathode600 µA
Operating temperature0°C~70°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Tolerance±1%
CaseTO-236-3, SC-59, SOT-23-3

Product details

Adjustable shunt reference in SOT-23-3 — 2.495 V to 36 V output

It sets a precision reference voltage of 2.495 V between the reference and anode pins, and with an external resistor divider the output can be programmed anywhere from that minimum up to 36 V.

100 mA output capability — 600 µA minimum cathode current

Rated for 100 mA continuous output current, this shunt can sink enough current to pull down a feedback node or drive the optocoupler LED in an isolated supply. The 600 µA minimum cathode current is the bias floor — below that the reference loses regulation, so the external resistor from cathode to supply must be sized to always deliver at least 600 µA through the device. For a typical 5 V rail with a 1 kΩ pull-up to the cathode, the bias current sits around 2.5 mA at the 2.495 V reference point — well above the 600 µA floor, with headroom for the load transient.

For automotive or outdoor telecom enclosures that see -40°C, step up to the TL432AIDBZT or similar industrial-grade sibling.

This part can be designed into new builds without an obsolescence watch.

Frequently asked questions

Is TL432ACDBZT a direct replacement for TL431?

Functionally yes — the TL432 uses the same internal bandgap reference and has the same 2.495 V reference voltage and 36 V output ceiling. The difference is the package: TL432 comes in SOT-23-3, while the classic TL431 is usually in TO-92 or SOIC-8. The pinout is different (the SOT-23-3 has reference, anode, cathode in a different order than the TO-92), so a direct drop-in swap without a PCB layout change is not possible.

What is the cathode current for TL432ACDBZT?

The minimum cathode current for regulation is 600 µA. The device can sink up to 100 mA continuous output current.