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Texas Instruments TL432QDBVTG4 — Analog & Data Acquisition

TL432QDBVTG4 Adjustable Shunt Reference, 2.495 V, SOT-23-5

MPNTL432QDBVTG4
Obsolete

Texas Instruments TL432QDBVTG4, adjustable shunt voltage reference, 2.495 V min output, 100 mA output, ±2.2% tolerance, SOT-23-5 package, -40°C to 125°C.

Texas Instruments TL432QDBVTG4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TL432QDBVTG4 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)
Tolerance±2.2%
CaseSC-74A, SOT-753

Product details

Adjustable shunt reference in a hand-solderable SOT-23-5

It provides a 2.495 V reference voltage at the cathode and can sink up to 100 mA, making it a fit for voltage monitoring, error amplification, or as a precision shunt regulator in power supplies and battery chargers.

The 2.495 V minimum output sets the floor for the adjustable range; the cathode can regulate up to 36 V, so it covers common 3.3 V, 5 V, 12 V, and 24 V rails. The 100 mA output current is the maximum the reference can sink — useful for driving an optocoupler LED or biasing a pass transistor in a linear regulator. The 1 mA minimum cathode current means the part needs at least that much bias to stay in regulation; a design with a light load must include a pull-up resistor to guarantee this current.

Package and footprint — SOT-23-5

The SOT-23-5 (also listed as SC-74A) is a five-pin surface-mount package with 0.95 mm pitch — easily hand-soldered with a fine-tip iron or reflowed in a toaster oven. The pinout is standard for the TL432 family: cathode, anode, and reference.

Frequently asked questions

What is the replacement for TL432QDBVTG4?

Texas Instruments has not listed an official successor for the TL432QDBVTG4. A common functional alternative is the TL431 family in a similar package (e.g., TL431AIDBZR in SOT-23-3), but the pinout differs — the TL432 uses a different pin arrangement than the TL431. Verify the pinout against your PCB layout before substituting.

Can TL432QDBVTG4 replace TL431?

The TL432 is functionally similar to the TL431 — same 2.495 V reference, same adjustable output up to 36 V, same 100 mA sink capability. However, the pinout is different: the TL432 has a different arrangement of cathode, anode, and reference pins. Check your board's footprint before swapping.

What is the difference between TL432 and TL432Q?

The 'Q' in TL432QDBVTG4 typically indicates an automotive-qualified variant (AEC-Q100). The base electrical specs — 2.495 V reference, 100 mA output, adjustable output — are the same.