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Texas Instruments ATL432LIBQDBZRQ1 — Discrete Semiconductors

TI ATL432LIBQDBZRQ1 Shunt Reference, ±0.5%, SOT-23-3

MPNATL432LIBQDBZRQ1
End of Life

Texas Instruments ATL432LIBQDBZRQ1 adjustable shunt voltage reference, ±0.5% tolerance, 2.5 V to 36 V output, 15 mA output, 80 µA cathode current, AEC-Q100, SOT-23-3.

$0.89Ref. price · indicative, final on quote
Texas Instruments ATL432LIBQDBZRQ1 datasheet (PDF)
PackagingTO-236-3, SC-59, SOT-23-3
RoHSROHS3 Compliant
SeriesAutomotive, AEC-Q100
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

ATL432LIBQDBZRQ1 specifications
ParameterValue
SeriesAutomotive, AEC-Q100
Output typeAdjustable
MountingSurface Mount
Reference typeShunt
Voltage - output36 V
Voltage - output (Min (Fixed))2.5V
Output current15 mA
Current - cathode80 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 precision shunt for automotive feedback loops

The ATL432LIBQDBZRQ1: Its ±0.5% initial tolerance is tighter than the standard TL431's ±2.2%, so in a 5 V output supply the regulation point lands within 25 mV of target without trimming — that difference matters when the downstream ADC's reference input is the same rail.

Package and board-fit — SOT-23-3 footprint

Housed in the industry-standard SOT-23-3 package (TO-236-3 / SC-59), the ATL432LIBQDBZRQ1's pinout matches the three-terminal shunt reference layout — cathode, anode, and reference — so it drops into any board originally laid out for a TL431 or LM4040 in the same package. The surface-mount SOT-23-3 footprint is compact enough for dense automotive ECU layouts, and the package supports both tape-and-reel and cut-tape options for prototyping or production.

The AEC-Q100 qualification package includes the full PPAP documentation set, making it a direct fit for automotive-tier supply chains without additional qualification work.

Frequently asked questions

Where can I buy ATL432LIBQDBZRQ1 and how is it quoted?

No stock-holding claim is made — each quote reflects the real-time supply position.

Will ATL432LIBQDBZRQ1 drop into a panel that was specified around TL431IDBVR without rewiring?

The ATL432LIBQDBZRQ1 shares the same SOT-23-3 pinout and shunt-reference topology as the TL431IDBVR, so it is a direct footprint replacement. The key difference is the ATL432's tighter ±0.5% tolerance versus the TL431's ±2.2% — the feedback divider may need no change, but the tighter tolerance can shift the output voltage slightly if the divider resistors were trimmed to compensate for the looser reference.

What compliance documentation does Texas Instruments provide for ATL432LIBQDBZRQ1?

Texas Instruments provides ROHS3 compliance certification and AEC-Q100 qualification documentation for this part.