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TL431CDBZR

Adjustable precision shunt regulator

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.

Reference voltage

tolerance (Vref)

Temperature range (Tamb)

Pinning configuration

0 ° C to 70 °C

-40 ° C to 85 °C

-40 ° C to 125 °C

2.0 %

TL431CDBZR

TL431IDBZR

TL431QDBZR

normal pinning

TL431FDT

normal pinning

TL431MFDT

mirrored pinning

1.0 %

TL431ACDBZR

TL431AIDBZR

TL431AQDBZR

normal pinning

TL431AFDT

normal pinning

TL431AMFDT

mirrored pinning

0.5 %

TL431BCDBZR

TL431BIDBZR

TL431BQDBZR

normal pinning

TL431BFDT

normal pinning

TL431BMFDT

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

  • AEC-Q100 qualified (grade 1)

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)
TL431CDBZR SOT23 SOT23 2.9 x 1.3 x 1 normal 0~70 2 2.495 36 100

PCB Symbol, Footprint and 3D Model

Model Name Description

Package

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
TL431CDBZR TL431CDBZR,215
(935288016215)
Active CA% 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
TL431CDBZR TL431CDBZR,215 TL431CDBZR rohs rhf rhf
Quality and reliability disclaimer

Documentation (15)

File name Title Type Date
TL431_FAM Adjustable precision shunt regulator Data sheet 2019-01-14
TL431CDBZR_Nexperia_Product_Quality TL431CDBZR Nexperia Product Quality Quality document 2019-05-20
TL431CDBZR_Nexperia_Product_Reliability TL431CDBZR Nexperia Product Reliability Quality document 2023-04-04
TL431 TL431 SPICE model SPICE model 2020-10-26
AN90024 Resistor Equipped Transistors (RETs): Key parameters and application insights Application note 2021-08-03
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_185 Reel pack for SMD, 7"; Q3/T4 product orientation Packing information 2020-06-01
SOT23_215 Reel pack for SMD, 7"; Q3/T4 product orientation Packing information 2020-04-29
SOT23_235 Reel pack for SMD, 11"; Q3/T4 product orientation Packing information 2020-06-01
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
TL431 TL431 SPICE model SPICE model 2020-10-26
SOT23 3D model for products with SOT23 package Design support 2019-01-22

PCB Symbol, Footprint and 3D Model

Model Name Description

Ordering, pricing & availability

Type number Orderable part number Ordering code (12NC) Status Packing Packing Quantity Buy online
TL431CDBZR TL431CDBZR,215 935288016215 Active SOT23_215 3,000 Order product

Sample

As a Nexperia customer you can order samples via our sales organization or directly via our Online Sample Store: https://extranet.nexperia.com.

Sample orders normally take 2-4 days for delivery.

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.

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.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
TL431CDBZR TL431CDBZR,215 935288016215 SOT23 Order product