TL431AIDBZR IC: Features, Applications and Datasheet
-40°C~85°C TA Adjustable 0.95mm PMIC TL431 1 Channel TO-236-3, SC-59, SOT-23-3









-40°C~85°C TA Adjustable 0.95mm PMIC TL431 1 Channel TO-236-3, SC-59, SOT-23-3
The Texas Instruments TL431AIDBZR is an integrated circuit that belongs to the category of shunt voltage references. This article will introduce its features, applications and datasheet.
TL431AIDBZR Description
The Texas Instruments TL431AIDBZR is an integrated circuit that belongs to the category of shunt voltage references. A shunt voltage reference is a device that provides a stable and precise output voltage by regulating the current through a shunt resistor. The TL431AIDBZR can be adjusted to any output voltage between 2.495 V and 36 V, with two external resistors. It has a tolerance of ±1% and a maximum output current of 100 mA. It comes in a SOT-23-3 package, which is a small surface mount package with three leads. The TL431AIDBZR can be used for various applications, such as power supplies, battery chargers, voltage monitors, and comparators. It has a specified thermal stability over a wide temperature range, from -40°C to 85°C. The TL431AIDBZR is part of the TL431 and TL432 family of adjustable shunt regulators from Texas Instruments, which offer different levels of accuracy and performance.
TL431AIDBZR Features
It is an adjustable shunt voltage reference that can provide a stable and precise output voltage between 2.495 V and 36 V with two external resistors.
It has a tolerance of ±1% and a maximum output current of 100 mA.
It comes in a SOT-23-3 package, which is a small surface mount package with three leads.
It can be used for various applications, such as power supplies, battery chargers, voltage monitors, and comparators.
It has a specified thermal stability over a wide temperature range, from -40°C to 85°C.
Specifications
- TypeParameter
- Lifecycle Status
Lifecycle Status refers to the current stage of an electronic component in its product life cycle, indicating whether it is active, obsolete, or transitioning between these states. An active status means the component is in production and available for purchase. An obsolete status indicates that the component is no longer being manufactured or supported, and manufacturers typically provide a limited time frame for support. Understanding the lifecycle status is crucial for design engineers to ensure continuity and reliability in their projects.
ACTIVE (Last Updated: 5 days ago) - Factory Lead Time12 Weeks
- Mounting Type
The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.
Surface Mount - Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
TO-236-3, SC-59, SOT-23-3 - Surface Mount
having leads that are designed to be soldered on the side of a circuit board that the body of the component is mounted on.
YES - Number of Pins3
- Operating Temperature
The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.
-40°C~85°C TA - Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Tape & Reel (TR) - Tolerance
In electronic components, "tolerance" refers to the acceptable deviation or variation from the specified or ideal value of a particular parameter, such as resistance, capacitance, or voltage. It indicates the range within which the actual value of the component can fluctuate while still being considered acceptable for use in a circuit. Tolerance is typically expressed as a percentage or a specific value and is important for ensuring the accuracy and reliability of electronic devices. Components with tighter tolerances are more precise but may also be more expensive. It is crucial to consider tolerance when selecting components to ensure proper functionality and performance of the circuit.
±1% - JESD-609 Code
The "JESD-609 Code" in electronic components refers to a standardized marking code that indicates the lead-free solder composition and finish of electronic components for compliance with environmental regulations.
e4 - Pbfree Code
The "Pbfree Code" parameter in electronic components refers to the code or marking used to indicate that the component is lead-free. Lead (Pb) is a toxic substance that has been widely used in electronic components for many years, but due to environmental concerns, there has been a shift towards lead-free alternatives. The Pbfree Code helps manufacturers and users easily identify components that do not contain lead, ensuring compliance with regulations and promoting environmentally friendly practices. It is important to pay attention to the Pbfree Code when selecting electronic components to ensure they meet the necessary requirements for lead-free applications.
yes - Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Active - Moisture Sensitivity Level (MSL)
Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures
1 (Unlimited) - Number of Terminations3
- ECCN Code
An ECCN (Export Control Classification Number) is an alphanumeric code used by the U.S. Bureau of Industry and Security to identify and categorize electronic components and other dual-use items that may require an export license based on their technical characteristics and potential for military use.
EAR99 - Temperature Coefficient
The resistance-change factor per degree Celsius of temperature change is called the temperature coefficient of resistance. This factor is represented by the Greek lower-case letter “alpha” (α). A positive coefficient for a material means that its resistance increases with an increase in temperature.
34 ppm/°C - Terminal Finish
Terminal Finish refers to the surface treatment applied to the terminals or leads of electronic components to enhance their performance and longevity. It can improve solderability, corrosion resistance, and overall reliability of the connection in electronic assemblies. Common finishes include nickel, gold, and tin, each possessing distinct properties suitable for various applications. The choice of terminal finish can significantly impact the durability and effectiveness of electronic devices.
Nickel/Palladium/Gold (Ni/Pd/Au) - Terminal Position
In electronic components, the term "Terminal Position" refers to the physical location of the connection points on the component where external electrical connections can be made. These connection points, known as terminals, are typically used to attach wires, leads, or other components to the main body of the electronic component. The terminal position is important for ensuring proper connectivity and functionality of the component within a circuit. It is often specified in technical datasheets or component specifications to help designers and engineers understand how to properly integrate the component into their circuit designs.
DUAL - Terminal Form
Occurring at or forming the end of a series, succession, or the like; closing; concluding.
GULL WING - Peak Reflow Temperature (Cel)
Peak Reflow Temperature (Cel) is a parameter that specifies the maximum temperature at which an electronic component can be exposed during the reflow soldering process. Reflow soldering is a common method used to attach electronic components to a circuit board. The Peak Reflow Temperature is crucial because it ensures that the component is not damaged or degraded during the soldering process. Exceeding the specified Peak Reflow Temperature can lead to issues such as component failure, reduced performance, or even permanent damage to the component. It is important for manufacturers and assemblers to adhere to the recommended Peak Reflow Temperature to ensure the reliability and functionality of the electronic components.
260 - Number of Functions1
- Terminal Pitch
The center distance from one pole to the next.
0.95mm - Base Part Number
The "Base Part Number" (BPN) in electronic components serves a similar purpose to the "Base Product Number." It refers to the primary identifier for a component that captures the essential characteristics shared by a group of similar components. The BPN provides a fundamental way to reference a family or series of components without specifying all the variations and specific details.
TL431 - Pin Count
a count of all of the component leads (or pins)
3 - Number of Outputs1
- Output Voltage
Output voltage is a crucial parameter in electronic components that refers to the voltage level produced by the component as a result of its operation. It represents the electrical potential difference between the output terminal of the component and a reference point, typically ground. The output voltage is a key factor in determining the performance and functionality of the component, as it dictates the level of voltage that will be delivered to the connected circuit or load. It is often specified in datasheets and technical specifications to ensure compatibility and proper functioning within a given system.
36V - Output Type
The "Output Type" parameter in electronic components refers to the type of signal or data that is produced by the component as an output. This parameter specifies the nature of the output signal, such as analog or digital, and can also include details about the voltage levels, current levels, frequency, and other characteristics of the output signal. Understanding the output type of a component is crucial for ensuring compatibility with other components in a circuit or system, as well as for determining how the output signal can be utilized or processed further. In summary, the output type parameter provides essential information about the nature of the signal that is generated by the electronic component as its output.
Adjustable - Max Output Current
The maximum current that can be supplied to the load.
100mA - Number of Channels1
- Trim/Adjustable Output
Trim or adjustable output refers to the ability of an electronic component, such as a voltage regulator or power supply, to produce an output voltage that can be finely tuned or adjusted to meet specific requirements. This feature allows for precise control over the output voltage level, accommodating variations in load conditions or desired operational parameters. Users can typically achieve this adjustment through external resistors, potentiometers, or internal calibration mechanisms, ensuring optimal performance in diverse applications.
YES - Analog IC - Other Type
Analog IC - Other Type is a parameter used to categorize electronic components that are integrated circuits (ICs) designed for analog signal processing but do not fall into more specific subcategories such as amplifiers, comparators, or voltage regulators. These ICs may include specialized analog functions such as analog-to-digital converters (ADCs), digital-to-analog converters (DACs), voltage references, or signal conditioning circuits. They are typically used in various applications where precise analog signal processing is required, such as in audio equipment, instrumentation, communication systems, and industrial control systems. Manufacturers provide detailed specifications for these components to help engineers select the most suitable IC for their specific design requirements.
THREE TERMINAL VOLTAGE REFERENCE - Max Output Voltage
The maximum output voltage refers to the dynamic area beyond which the output is saturated in the positive or negative direction, and is limited according to the load resistance value.
36V - Min Input Voltage
The parameter "Min Input Voltage" in electronic components refers to the minimum voltage level that must be applied to the component for it to operate within its specified parameters. This value is crucial as providing a voltage below this minimum threshold may result in the component malfunctioning or not functioning at all. It is important to adhere to the specified minimum input voltage to ensure the proper operation and longevity of the electronic component. Failure to meet this requirement may lead to potential damage to the component or the overall system in which it is used.
2.495V - Max Input Voltage
Max Input Voltage refers to the maximum voltage level that an electronic component can safely handle without getting damaged. This parameter is crucial for ensuring the proper functioning and longevity of the component. Exceeding the specified maximum input voltage can lead to overheating, electrical breakdown, or permanent damage to the component. It is important to carefully adhere to the manufacturer's guidelines regarding the maximum input voltage to prevent any potential issues and maintain the reliability of the electronic device.
37V - Reference Voltage
A voltage reference is an electronic device that ideally produces a fixed (constant) voltage irrespective of the loading on the device, power supply variations, temperature changes, and the passage of time. Voltage references are used in power supplies, analog-to-digital converters, digital-to-analog converters, and other measurement and control systems. Voltage references vary widely in performance; a regulator for a computer power supply may only hold its value to within a few percent of the nominal value, whereas laboratory voltage standards have precisions and stability measured in parts per million.
36V - Reference Type
a code object that is not stored directly where it is created, but that acts as a kind of pointer to a value stored elsewhere.
Shunt - Min Output Voltage
Min Output Voltage refers to the lowest voltage level that an electronic component, such as a voltage regulator or power supply, can provide reliably under specified conditions. It indicates the minimum threshold required for proper operation of connected devices. Operating below this voltage may lead to device malfunction or failure to operate as intended.
2.5V - Temp Coef of Voltage-Max
The parameter "Temp Coef of Voltage-Max" refers to the temperature coefficient of the maximum voltage rating of an electronic component. It indicates how the maximum voltage that the component can handle varies with temperature changes. A positive temperature coefficient means that the maximum voltage increases with temperature, while a negative coefficient indicates a decrease. This parameter is crucial for ensuring reliable performance and preventing breakdowns under different operating temperatures.
92 ppm/°C - Current - Cathode
Current - Cathode refers to the flow of electric current through the cathode terminal of an electronic component, such as a diode or a vacuum tube. It represents the amount of charge carriers, typically electrons, moving towards the cathode during operation. This parameter is crucial for determining the component's functionality and performance characteristics, as it influences the efficiency and stability of the circuit. High cathode current can indicate increased power consumption or potential overheating issues if not managed properly.
700μA - Height1.22mm
- Length2.92mm
- Width1.3mm
- Thickness
Thickness in electronic components refers to the measurement of how thick a particular material or layer is within the component structure. It can pertain to various aspects, such as the thickness of a substrate, a dielectric layer, or conductive traces. This parameter is crucial as it impacts the electrical, mechanical, and thermal properties of the component, influencing its performance and reliability in electronic circuits.
1mm - REACH SVHC
The parameter "REACH SVHC" in electronic components refers to the compliance with the Registration, Evaluation, Authorization, and Restriction of Chemicals (REACH) regulation regarding Substances of Very High Concern (SVHC). SVHCs are substances that may have serious effects on human health or the environment, and their use is regulated under REACH to ensure their safe handling and minimize their impact.Manufacturers of electronic components need to declare if their products contain any SVHCs above a certain threshold concentration and provide information on the safe use of these substances. This information allows customers to make informed decisions about the potential risks associated with using the components and take appropriate measures to mitigate any hazards.Ensuring compliance with REACH SVHC requirements is essential for electronics manufacturers to meet regulatory standards, protect human health and the environment, and maintain transparency in their supply chain. It also demonstrates a commitment to sustainability and responsible manufacturing practices in the electronics industry.
No SVHC - Radiation Hardening
Radiation hardening is the process of making electronic components and circuits resistant to damage or malfunction caused by high levels of ionizing radiation, especially for environments in outer space (especially beyond the low Earth orbit), around nuclear reactors and particle accelerators, or during nuclear accidents or nuclear warfare.
No - RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
ROHS3 Compliant - Lead Free
Lead Free is a term used to describe electronic components that do not contain lead as part of their composition. Lead is a toxic material that can have harmful effects on human health and the environment, so the electronics industry has been moving towards lead-free components to reduce these risks. Lead-free components are typically made using alternative materials such as silver, copper, and tin. Manufacturers must comply with regulations such as the Restriction of Hazardous Substances (RoHS) directive to ensure that their products are lead-free and environmentally friendly.
Lead Free
TL431AIDBZR Applications
Power supplies: The TL431AIDBZR can be used as a voltage reference or a feedback element in various types of power supplies, such as linear regulators, switching converters, and isolated converters.
Battery chargers: The TL431AIDBZR can be used to monitor and control the charging voltage and current of batteries, such as lead-acid, lithium-ion, and nickel-cadmium batteries.
Voltage monitors: The TL431AIDBZR can be used to detect and indicate the voltage levels of different sources, such as power rails, inputs, outputs, and signals.
Comparators: The TL431AIDBZR can be used to compare the input voltage with a reference voltage and generate an output signal based on the comparison result.
TL431AIDBZR CAD Model
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TL431AIDBZR Alternatives
Part Number | Description | Manufacturer |
TL431AIDBZT | Three Terminal Voltage Reference, 1 Output, 2.495V, Trim/Adjustable, BIPolar, PDSO3, GREEN, PLASTIC, SOT-23, 3 PIN | Rochester Electronics LLC |
TL431AIDBZTG4 | Three Terminal Voltage Reference, 1 Output, 2.495V, Trim/Adjustable, BIPolar, PDSO3, GREEN, PLASTIC, SOT-23, 3 PIN | Rochester Electronics LLC |
TL431AIDBZR | Three Terminal Voltage Reference, 1 Output, 2.495V, Trim/Adjustable, BIPolar, PDSO3, GREEN, PLASTIC, SOT-23, 3 PIN | Rochester Electronics LLC |
TL431AIDBZTG4 | Adjustable precision shunt regulator 3-SOT-23 -40 to 85 | Texas Instruments |
TL431AIDBZRG4 | Adjustable precision shunt regulator 3-SOT-23 -40 to 85 | Texas Instruments |
TL431AIDBZR Manufacturer
Texas Instruments is a global semiconductor company that has been making progress possible for decades. It designs, manufactures, tests and sells analog and embedded processing chips that are used in various electronic systems, such as industrial, automotive, personal electronics, communications equipment and enterprise systems. Texas Instruments has more than 80,000 products that help its customers efficiently manage power, accurately sense and transmit data and provide the core control or processing in their designs. Texas Instruments also invests in internal manufacturing capacity to support its growth for decades to come. Texas Instruments is guided by its ambitions and values, which define what it desires and how it behaves. Texas Instruments also contributes to the society by giving back to the communities, supporting education, and engaging in public policy.
Parts with Similar Specs
- ImagePart NumberManufacturerPackage / CaseNumber of PinsMax Output CurrentMin Input VoltageMax Input VoltageMin Output VoltageOutput VoltageMax Output VoltageToleranceTemperature CoefficientView Compare
TL431AIDBZR
TO-236-3, SC-59, SOT-23-3
3
100 mA
2.495 V
37 V
2.5 V
36 V
36 V
±1%
34 ppm/°C
TO-236-3, SC-59, SOT-23-3
3
100 mA
2.47 V
2.52 V
2.495 V
36 V
36 V
±1%
50ppm/°C Typical
TO-236-3, SC-59, SOT-23-3
3
100 mA
2.483 V
37 V
2.5 V
36 V
36 V
±0.5%
34 ppm/°C
TO-236-3, SC-59, SOT-23-3
3
100 mA
2.495 V
37 V
2.5 V
36 V
36 V
±1%
34 ppm/°C
TO-236-3, SC-59, SOT-23-3
3
100 mA
2.495 V
37 V
-
36 V
36 V
±1%
34 ppm/°C
Datasheet PDF
- PCN Design/Specification :
- PCN Assembly/Origin :
What is the difference between TL431 and TL432?
The TL431 and TL432 are both adjustable shunt voltage references, but they have different pin configurations. The TL431 has the reference input (REF) on pin 1, the cathode (K) on pin 2, and the anode (A) on pin 3. The TL432 has the anode (A) on pin 1, the cathode (K) on pin 2, and the reference input (REF) on pin 31.
What are the advantages of using TL431AIDBZR over a zener diode?
Some of the advantages of using TL431AIDBZR over a zener diode are: It has a higher accuracy and lower temperature drift than a zener diode. It can be adjusted to any output voltage between 2.495 V and 36 V, while a zener diode has a fixed output voltage. It has a lower output impedance and noise than a zener diode. It has a better line and load regulation than a zener diode.
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