If you like Findchips… You will love Findchips PRO. Try it Now.

TL431BQDBZR

Adjustable precision shunt regulator 3-SOT-23 -40 to 125

Choose Manufacturer
Price Range $0.1705 / $0.5000

Part Details

CAD Models Information

  • Part Symbol
  • Footprint

Sign in to download this CAD model.

Register or Sign In

By downloading CAD models, you agree to our Terms & Conditions and Privacy Policy

Distributors with Stock

Part Number Description Manufacturer Compare
KA431SMF Power Circuits Two Terminal Voltage Reference, 1 Output, 2.5V, Trim/Adjustable, BIPolar, PDSO3, SOT-23F, 3 PIN Fairchild Semiconductor Corporation TL431BQDBZR vs KA431SMF
TS2431ILT Power Circuits Adjustable Shunt Voltage Reference STMicroelectronics TL431BQDBZR vs TS2431ILT
AS431AR25SB Power Circuits 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.503V, PSSO3, SOT-89, 3 PIN Emerson Embedded Power TL431BQDBZR vs AS431AR25SB
AS431C2S13 Power Circuits 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.49V, PSSO3, SOT-89, 3 PIN Emerson Embedded Power TL431BQDBZR vs AS431C2S13
TL431LG-AF5-R Power Circuits Three Terminal Voltage Reference, 1 Output, 2.5V, Trim/Adjustable, BIPolar, PDSO5, HALOGEN FREE, SOT-25, 5 PIN Unisonic Technologies Co Ltd TL431BQDBZR vs TL431LG-AF5-R
AS431CR25SA Power Circuits Two Terminal Voltage Reference, 1 Output, 2.503V, Trim/Adjustable, PSSO3, SOT-89, 3 PIN Artysen Embedded Technologies TL431BQDBZR vs AS431CR25SA
ADR525ART-R2 Power Circuits IC 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.5 V, PDSO3, TO-236AB, SOT-23, 3 PIN, Voltage Reference Analog Devices Inc TL431BQDBZR vs ADR525ART-R2
AS431AR25S13 Power Circuits Two Terminal Voltage Reference, 1 Output, 2.503V, Trim/Adjustable, PSSO3, SOT-89, 3 PIN Artysen Embedded Technologies TL431BQDBZR vs AS431AR25S13
TL431AFDT Power Circuits 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.495V, PDSO3, PLASTIC, TO-236AB, SOT-23, 3 PIN NXP Semiconductors TL431BQDBZR vs TL431AFDT
TL431BFDT/NPR Power Circuits TL431 family - Adjustable precision shunt regulator TO-236 3-Pin Nexperia TL431BQDBZR vs TL431BFDT/NPR

Global Popularity

Popularity in Power Circuits

Popularity in Voltage References

Popularity by Region

Very High

Medium

Good

Low

  • 1. China
    100
  • 2. South Korea
    83
  • 3. United States
    81
  • 4. Germany
    81
  • 5. Singapore
    78
  • 6. Russia
    75
  • 7. Latvia
    75
  • 8. India
    70
  • 9. Ivory Coast
    67
  • 10. Taiwan
    67

Estimated Price History

Estimated Stock History

Market Price Analysis

No data available
  • 1. Rochester Electronics $0.1705 Buy Now
  • 2. Texas Instruments $0.3270 Buy Now
  • 3. Newark $0.5000 Buy Now

Datasheets & Reference Designs

Reference Designs

  • PMP11282 High Efficiency 410W AC/DC Power Supply Reference Design | TI.com
    PMP11282: PMP11282 is a high-efficiency AC/DC power supply reference design with universal AC input and 24V/17A output. Interleaved transition mode PFC and LLC series resonant converter is applied for 24V/17A main power. A PSR Flyback with MOSFET integrated controller is applied as the auxiliary supply. 91.98% efficiency is achieved at low line and full load. 94.61% efficiency is achieved at high line and full load.
  • PMP11064 High Efficiency 400W AC/DC Power Supply Reference Design | TI.com
    PMP11064: PMP11064 is a high-efficiency AC/DC power supply reference design with universal AC input and 20V/20A output. Interleaved transition mode PFC and LLC series resonant converter is applied for 20V/20A main power. A PSR Flyback with MOSFET integrated controller is applied as the auxiliary supply. 91.2% efficiency is achieved at low line and full load. 93.1% efficiency is achieved at high line and full load.
  • High Efficiency 400W AC/DC Power Supply Reference Design - PMP11064.1 - TI Tool Folder
    PMP11064: PMP11064 is a high-efficiency AC/DC power supply reference design with universal AC input and 20V/20A output. Interleaved transition mode PFC and LLC series resonant converter is applied for 20V/20A main power. A PSR Flyback with MOSFET integrated controller is applied as the auxiliary supply. 91.2% efficiency is achieved at low line and full load. 93.1% efficiency is achieved at high line and full load.
  • TIPD158 Low Cost Loop-Powered 4-20mA Transmitter EMC/EMI Tested Reference Design | TI.com
    TIPD158: This CerTIfied Reference Design is a low cost system that implements a 12-bit loop-powered, or 2-wire, transmitter using the DAC7311, OPA317, and TL431B. The design includes a protection circuit that provides immunity to the IEC61000-4 test suite. The design also includes a circuit to rectify a reverse polarity supply voltage. The protection circuit and rectifier do not negatively affect the current output performance, resulting in <0.2% total unadjusted error (TUE). This design is well suited for industrial automation and process conrol applications requiring a low-cost solution for 2-wire data transmission.
  • PMP11282 High Efficiency 410W AC/DC Power Supply Reference Design | TI.com
    PMP11282: PMP11282 is a high-efficiency AC/DC power supply reference design with universal AC input and 24V/17A output. Interleaved transition mode PFC and LLC series resonant converter is applied for 24V/17A main power. A PSR Flyback with MOSFET integrated controller is applied as the auxiliary supply. 91.98% efficiency is achieved at low line and full load. 94.61% efficiency is achieved at high line and full load.
  • TIDA-00366 Reference Design for Reinforced Isolation 3-Phase Inverter with Current, Voltage and Temp Protection | TI.com
    TIDA-00366: The TIDA-00366 reference design provides a reference solution for 3-Phase inverter rated up to 10kW designed using reinforced isolated dual IGBT gate driver UCC21520, reinforced isolated amplifier AMC1301, and MCU (TMS320F28027). Lower system cost is achieved by using AMC1301 for motor current measurement interfaced with internal ADC of MCU and use of bootstrap power supply for IGBT gate drivers. The inverter is designed to have protection against overload, short circuit, ground fault, under/over DC bus voltage and IGBT module over-temperature.
  • TIDM-AUTO-DC-LED-LIGHTING Multiple Channels of High Density LED Control for Automotive Headlight Applications | TI.com
    TIDM-AUTO-DC-LED-LIGHTING: This design, featuring the TMS320F2803x Piccolo microcontroller, implements a high efficiency multi-channel DC-DC LED control system for typically automotive lighting systems. The design support up to 6 channels of LED controls each with maximum of 1.2A current driving capabilities. With a two stage power topology of boost and buck, the system can be operated with a wide input DC voltage from 8V to 20V, which fits perfectly in automotive applications.
  • PMP11064 High Efficiency 400W AC/DC Power Supply Reference Design | TI.com
    PMP11064: PMP11064 is a high-efficiency AC/DC power supply reference design with universal AC input and 20V/20A output. Interleaved transition mode PFC and LLC series resonant converter is applied for 20V/20A main power. A PSR Flyback with MOSFET integrated controller is applied as the auxiliary supply. 91.2% efficiency is achieved at low line and full load. 93.1% efficiency is achieved at high line and full load.
  • Multiple Channels of High Density LED Control for Automotive Headlight Applications
    TIDM-AUTO-DC-LED-LIGHTING: This design, featuring the TMS320F2803x Piccolo microcontroller, implements a high efficiency multi-channel DC-DC LED control system for typically automotive lighting systems. The design support up to 6 channels of LED controls each with maximum of 1.2A current driving capabilities. With a two stage power topology of boost and buck, the system can be operated with a wide input DC voltage from 8V to 20V, which fits perfectly in automotive applications.
  • Low Cost Loop-Powered 4-20mA Transmitter EMC/EMI Tested Reference Design
    TIPD158: This CerTIfied Reference Design is a low cost system that implements a 12-bit loop-powered, or 2-wire, transmitter using the DAC7311, OPA317, and TL431B. The design includes a protection circuit that provides immunity to the IEC61000-4 test suite. The design also includes a circuit to rectify a reverse polarity supply voltage. The protection circuit and rectifier do not negatively affect the current output performance, resulting in <0.2% total unadjusted error (TUE). This design is well suited for industrial automation and process conrol applications requiring a low-cost solution for 2-wire data transmission.

Frequently Asked Questions (FAQ)

  • Q: Where can I find a circuit for the TL431 Shunt Regulator switch?

    A: One simple way to protect circuits from over voltage is the use of a Shunt Regulator IC TL431 to switch off the load if the voltage increases above the preset level. In unregulated power supply, if the voltage in the primary of the step down transformer increases, a corresponding increase in voltage will appears in the secondary also. This may seriously affect the circuit, if it uses voltage sensitive semiconductors.TL431 is an adjustable precision Zener shut regulator and its output voltage can be set between 2.5 volts to 36 volts using a voltage divider. It can functions like a Zener diode but with precision. more

  • Q: Where can I find TL431 application notes?

    A: 2% Accuracy Adjustable Precision Shunt Regulator more

  • Q: How can I calculate the values for TL431 shunt regulator?

    A: TL431 Calculator more

  • Q: Where can I find a TL431 pinout diagram?

    A: The TL431 and TL432 devices are three-terminal adjustable shunt regulators, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V, with two external resistors (see ). These devices have a typical output impedance of 0.2 Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies. The TL432 device has exactly the same functionality and electrical specifications as the TL431 device, but has different pinouts for the DBV, DBZ, and PK packages. more

  • Q: Where can I find a TL431 voltage regulator circuit?

    A: The TL431 is a reference voltage source that is commonly used in the control circuit of isolated power supplies. Typically used to provide a precision reference voltage, the TL431 can also be configured as an analog controller by exploiting its on-board error amplifier. In this example, the design of a TL431-based type 2 voltage controller for a flyback converter is presented. The voltage control circuit regulates the output voltage of the 5 V winding and includes an optocoupler to maintain isolation between the input and output stages. The example circuit is shown below. more

  • Q: How do I use a TL431 shunt regulator?

    A: This is the Shunt Regulator circuitwith TL431 Voltage Reference – Shunt Voltage Reference IC. They is easy to used,comprises one IC, three resistors, four capacitors.if you like to use zener diode for the voltage reference,it very cheap but low quality than the IC. In circuit the output is 5volt 15mA, if you other voltage can change R2,R2. The C1,C2,C3 use for filter the volt,low noise ripple. more

  • Q: Where can I download a TL431 Spice model?

    A: TL431 is commonly used to create a voltage reference or small linear shunt regulator. It is often considered to be a “programmable zener”. Though, there is a big difference betweenTL431 and a zener diode. As many of other feedback systems, TL431 can oscillate if inappropriately decoupled. more

  • Q: How do I use the TL431 as an LDO regulator?

    A: Given the vast number of application notes, design guides and other material concerning low dropout (LDO) regulators, anyone would think they were complex. Despite initial appearances, they actually are complex. There are many things that must be considered to ensure stability, and not the least of these is due to the use of a PNP series pass transistor or a P-Channel MOSFET, which means the output is from the collector or drain, and not the emitter or source as with most conventional regulators. more

  • Q: How do I use the TL431 for low voltage cutoff?

    A: The cutoff point is set by the ratio of R2 and R3. 6V is appropriate for a 7 cell Nicad or 2 cell Li-ion pack, 7.2V for an 8 cell Nicad, and 9V for a 3 cell Li-ion battery. Resistors R2 and R3 should be 1% tolerance for accuracy. Alternatively, a variable resistor could be used to adjust the cutoff voltage. more

  • Q: Where can I find a circuit diagram for TL431 overvoltage protection?

    A: The TL431 device has three terminals and main application of this device is adjustable shunt regulation. The reference regulating voltage can be given through cathode and reference pin. Here the VR1 variable resistor decides the regulation range, by changing it we can get different range of regulating voltage. more

Related Parts

Add to list:
Create New List

Confirm BOM Data

! Unable to save document.
Please try again.

!

Part Number ( parts) Qty CPN Designator Partent PN

BOM Options

Preferred distributors for this list (10)

Select preferred distributors

!  

Working...

Your FindChips PRO license has expired.

Please update your account details for future billings.

Update Account Details → or Request Extension →
You have a Findchips Basic account.

Your account has reached its list limit (3 Lists). To create a new list, an existing list must be removed.

Upgrade to Findchips Pro to increase your List count to 200

Upgrade to FindChips PRO →