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Texas Instruments TL432LIBQDBZRQ1 — Analog & Data Acquisition

TL432LIBQDBZRQ1 automotive shunt reference, AEC-Q100

MPNTL432LIBQDBZRQ1
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Texas Instruments TL432LIBQDBZRQ1, Automotive AEC-Q100, adjustable shunt voltage reference, ±0.5% tolerance, 2.495V min output, 36V max, 15 mA output, SOT-23-3, -40°C to 125°C.

$0.6500Ref. price · indicative, final on quote
Texas Instruments TL432LIBQDBZRQ1 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TL432LIBQDBZRQ1 specifications
ParameterValue
SeriesAutomotive, AEC-Q100
Output typeAdjustable
MountingSurface Mount
Reference typeShunt
Voltage - output36 V
Voltage - output (Min (Fixed))2.495V
Output current15 mA
Current - cathode600 µA
Operating temperature-40°C~125°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Tolerance±0.5%
CaseTO-236-3, SC-59, SOT-23-3

Product details

AEC-Q100 grade-1 shunt reference for underhood voltage regulation

It provides a 2.495V minimum output, adjustable up to 36V, with a ±0.5% tolerance—tighter than the standard 1% grade. The SOT-23-3 package suits compact ECU layouts where board space is at a premium.

The ±0.5% tolerance on the internal reference translates to a tighter output voltage window in a switching regulator or linear regulator feedback divider. For a 3.3V rail, that's roughly ±16.5 mV total error from the reference alone, versus ±33 mV for a 1% part. The 15 mA output current capability and 600 µA minimum cathode current give headroom for driving the optocoupler LED in isolated supplies without starving the reference.

Frequently asked questions

Is TL432LIBQDBZRQ1 AEC-Q100 qualified?

Yes, the TL432LIBQDBZRQ1 is listed under the Automotive, AEC-Q100 series.

What is the tolerance of TL432LIBQDBZRQ1?

The TL432LIBQDBZRQ1 has a ±0.5% tolerance on the reference voltage. This is tighter than the standard ±1% grade found on many general-purpose TL431/TL432 devices, and matters for precision regulation in automotive power supplies.

Is TL432LIBQDBZRQ1 equivalent to TL431?

The TL432 is functionally similar to the TL431 but uses a different pinout. The TL432LIBQDBZRQ1 is an adjustable shunt reference with the same 2.495V internal reference, 36V maximum output, and similar drive capability. The key difference is pin assignment—confirm the circuit layout before substituting.