Bipolar transistors

Diodes

ESD protection, TVS, filtering and signal conditioning

MOSFETs

SiC MOSFETs

GaN FETs

IGBTs

Analog & Logic ICs

Automotive qualified products (AEC-Q100/Q101)

TL431AMFDT-Q

Adjustable precision shunt regulators

Three-terminal shunt regulator family with an output voltage range between Vref = 2.495 V and 36 V, to be set by two external resistors.

Table 1. Product overview

Reference voltage

tolerance (Vref)

Temperature range (Tamb)

Pinning configuration

(see Table 5.)

0 °C to 70 °C

-40 °C to 85 °C

-40 °C to 125 °C

2.0 %

TL431CDBZR-Q

TL431IDBZR-Q

TL431QDBZR-Q

normal pinning

TL431FDT-Q

normal pinning

TL431MFDT-Q

mirrored pinning

1.0 %

TL431ACDBZR-Q

TL431AIDBZR-Q

TL431AQDBZR-Q

normal pinning

TL431AFDT-Q

normal pinning

TL431AMFDT-Q

mirrored pinning

0.5 %

TL431BCDBZR-Q

TL431BIDBZR-Q

TL431BQDBZR-Q

normal pinning

TL431BFDT-Q

normal pinning

TL431BMFDT-Q

mirrored pinning

Features and benefits

  • Programmable output voltage up to 36 V

  • Three different reference voltage tolerances:

    • Standard grade: 2 %

    • A-Grade: 1 %

    • B-Grade: 0.5 %

  • Typical temperature drift: 9 mV (in a range of 0 °C up to 70 °C)

  • Low output noise

  • Typical output impedance: 0.2 Ω

  • Sink current capability: 1 mA to 100 mA

  • Qualified according to AEC-Q100 (grade 1) and recommended for use in automotive applications

Applications

  • Shunt regulator

  • Precision current limiter

  • Precision constant current sink

  • Isolated feedback loop for Switch Mode Power Supply (SMPS)

Parametrics

Type number Package version Package name Size (mm) Pinning configuration Tamb (°C) Vref tolerance (%) Vref (V) VKA (V) IK (mA)
TL431AMFDT-Q SOT23 SOT23 2.9 x 1.3 x 1 mirrored -40~125 1 2.495 36 100

Package

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
TL431AMFDT-Q TL431AMFDT-QR
(934666178215)		 Active AV% SOT23
(SOT23) 		SOT23 REFLOW_BG-BD-1
WAVE_BG-BD-1
SOT23_215

Environmental information

Type number Orderable part number Chemical content RoHS RHF-indicator
TL431AMFDT-Q TL431AMFDT-QR TL431AMFDT-Q rohs rhf rhf
Quality and reliability disclaimer

Series

Documentation (9)

File name Title Type Date
TL431-Q_FAM Adjustable precision shunt regulators Data sheet 2024-04-30
SOT23 3D model for products with SOT23 package Design support 2019-01-22
Nexperia_package_poster Nexperia package poster Leaflet 2020-05-15
SOT23_mk plastic, surface-mounted package; 3 terminals; 1.9 mm pitch; 2.9 mm x 1.3 mm x 1 mm body Marcom graphics 2017-01-28
SOT23 plastic, surface-mounted package; 3 terminals; 1.9 mm pitch; 2.9 mm x 1.3 mm x 1 mm body Package information 2022-10-12
SOT23_215 Reel pack for SMD, 7"; Q3/T4 product orientation Packing information 2020-04-29
TL431AMFDT-Q_Nexperia_Product_Reliability TL431AMFDT-Q Nexperia Product Reliability Quality document 2024-04-22
REFLOW_BG-BD-1 Reflow soldering profile Reflow soldering 2021-04-06
WAVE_BG-BD-1 Wave soldering profile Wave soldering 2021-09-08

Support

If you are in need of design/technical support, let us know and fill in the answer form we'll get back to you shortly.

Models

File name Title Type Date
SOT23 3D model for products with SOT23 package Design support 2019-01-22

Ordering, pricing & availability

Type number Orderable part number Ordering code (12NC) Status Packing Packing Quantity Buy online
TL431AMFDT-Q TL431AMFDT-QR 934666178215 Active SOT23_215 3,000 Order product

Sample

As a Nexperia customer you can order samples via our sales organization.

If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples. Check out the list of official distributors.

How does it work?

The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.

Interactive datasheet

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
TL431AMFDT-Q TL431AMFDT-QR 934666178215 SOT23 Order product