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Texas Instruments TLV431ACLPE3 — Analog & Data Acquisition

TLV431ACLPE3 Shunt Voltage Reference, Adjustable, ±1%

MPNTLV431ACLPE3
Active

Texas Instruments TLV431ACLPE3, adjustable shunt voltage reference, ±1% tolerance, 15 mA output, 80 µA cathode current, 1.24 V to 6 V output, TO-92-3 through-hole package, 0°C to 70°C operating temperature.

$1.4300Ref. price · indicative, final on quote
Texas Instruments TLV431ACLPE3 datasheet (PDF)
PackagingTO-226-3, TO-92-3 (TO-226AA)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TLV431ACLPE3 specifications
ParameterValue
Output typeAdjustable
MountingThrough Hole
Reference typeShunt
Voltage - output6 V
Voltage - output (Min (Fixed))1.24V
Output current15 mA
Current - cathode80 µA
Operating temperature0°C~70°C(TA)
PackageBulk
Tolerance±1%
CaseTO-226-3, TO-92-3 (TO-226AA)

Product details

Shunt reference for precision biasing

It provides a stable 1.24 V minimum output, adjustable up to 6 V via two external resistors, with a guaranteed ±1% tolerance. The 15 mA output current and 80 µA cathode current suit it for biasing op-amp supplies, setting comparator thresholds, or providing a precision reference in low-power analog circuits.

Output current and cathode bias — sizing the resistor

The TLV431ACLPE3 sinks up to 15 mA at the cathode, which sets the upper limit for the load it can drive or the current through the bias resistor. The minimum cathode current is 80 µA — below that the reference may not regulate. When selecting the series resistor from the supply rail, size it so the cathode current stays between 80 µA and 15 mA across the full input voltage and load range. For a typical 5 V rail and a 1.24 V output, a 1 kΩ resistor gives about 3.8 mA bias, well within the window.

Package and mounting — through-hole rework

The TO-92-3 (TO-226AA) through-hole package is a standard three-lead transistor outline. It is hand-solderable and rework-friendly, making it a practical choice for prototyping, repair, and low-volume production. The bulk shipping form means parts arrive loose in a bag — no tape-and-reel for automated pick-and-place. For high-volume assembly, consider the surface-mount SOT-23 variant of the TLV431 family.

Frequently asked questions

What is the tolerance of TLV431ACLPE3?

The TLV431ACLPE3 has a ±1% tolerance on the reference voltage. This is the precision spec that determines whether the part meets your voltage accuracy budget.

Can TLV431ACLPE3 replace TL431?

The TLV431ACLPE3 is a lower-voltage variant of the classic TL431. The TL431 has a 2.5 V reference; the TLV431 operates from 1.24 V. If your circuit expects a 2.5 V reference, the TLV431 will not drop in without changing the resistor divider. For 1.24 V designs, it is a direct functional replacement with the same ±1% tolerance and TO-92 package.