TPS54331DR Converter: Pinout, Alternatives, Datasheet
8 Terminals 3.5V 8-Pin TPS54331 DC DC Voltage Regulator SWITCHING REGULATOR 1 Outputs 570kHz Tape & Reel (TR) 8-SOIC (0.154, 3.90mm Width)









8 Terminals 3.5V 8-Pin TPS54331 DC DC Voltage Regulator SWITCHING REGULATOR 1 Outputs 570kHz Tape & Reel (TR) 8-SOIC (0.154, 3.90mm Width)
The Texas Instruments TPS54331DR is a step-down converter that can convert an input voltage of 3.5V to 28V to an adjustable output voltage of 0.8V to 25V with a maximum output current of 3A. This article will introduce its pinout, alternatives and datasheet.
TPS54331DR Description
The Texas Instruments TPS54331DR is a step-down converter that can convert an input voltage of 3.5V to 28V to an adjustable output voltage of 0.8V to 25V with a maximum output current of 3A. It operates at a switching frequency of 570kHz and has an eco-mode feature that improves efficiency at light loads. It comes in an 8-pin SOIC package and can operate in a temperature range of -40°C to 150°C. It is suitable for applications such as industrial, automotive, and consumer electronics.
TPS54331DR Features
It has a high efficiency of up to 95% at full load and light load conditions.
It has a low quiescent current of 110µA in eco-mode and 17µA in shutdown mode.
It has a soft start feature that limits the inrush current and reduces the output voltage overshoot.
It has a power good output that indicates when the output voltage is within the regulation window.
It has a cycle-by-cycle current limit and hiccup mode protection for overcurrent and short-circuit conditions.
It has a thermal shutdown feature that protects the device from overheating.
It has a synchronization feature that allows multiple devices to operate at the same frequency and avoid beat frequencies.
It has a spread spectrum feature that reduces the peak radiated and conducted emissions.
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: 1 day ago) - Factory Lead Time6 Weeks
- Contact Plating
Contact plating (finish) provides corrosion protection for base metals and optimizes the mechanical and electrical properties of the contact interfaces.
Gold - 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.
8-SOIC (0.154, 3.90mm Width) - 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 Pins8
- Weight72.603129mg
- 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~150°C TJ - 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) - Series
In electronic components, the "Series" refers to a group of products that share similar characteristics, designs, or functionalities, often produced by the same manufacturer. These components within a series typically have common specifications but may vary in terms of voltage, power, or packaging to meet different application needs. The series name helps identify and differentiate between various product lines within a manufacturer's catalog.
Eco-Mode™ - 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 Terminations8
- 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 - 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 - 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.
TPS54331 - Function
The parameter "Function" in electronic components refers to the specific role or purpose that the component serves within an electronic circuit. It defines how the component interacts with other elements, influences the flow of electrical signals, and contributes to the overall behavior of the system. Functions can include amplification, signal processing, switching, filtering, and energy storage, among others. Understanding the function of each component is essential for designing effective and efficient electronic systems.
Step-Down - 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.
25V - 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.
3A - Operating Supply Voltage
The voltage level by which an electrical system is designated and to which certain operating characteristics of the system are related.
28V - Voltage - Input (Min)
Voltage - Input (Min) refers to the minimum voltage level that an electronic component requires to operate correctly. It indicates the lowest voltage that can be applied to the component while still allowing it to function as intended. If the input voltage falls below this specified minimum, the component may not perform properly or may fail to operate altogether. This parameter is critical for ensuring reliable operation and longevity of the device in electronic circuits.
3.5V - Input Voltage-Nom
Input Voltage-Nom refers to the nominal or rated input voltage that an electronic component or device is designed to operate within. This parameter specifies the voltage level at which the component is expected to function optimally and safely. It is important to ensure that the actual input voltage supplied to the component does not exceed this nominal value to prevent damage or malfunction. Manufacturers provide this specification to guide users in selecting the appropriate power supply or input voltage source for the component. It is a critical parameter to consider when designing or using electronic circuits to ensure reliable performance and longevity of the component.
12V - 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.
SWITCHING REGULATOR - Output Configuration
Output Configuration in electronic components refers to the arrangement or setup of the output pins or terminals of a device. It defines how the output signals are structured and how they interact with external circuits or devices. The output configuration can determine the functionality and compatibility of the component in a circuit design. Common types of output configurations include single-ended, differential, open-drain, and push-pull configurations, each serving different purposes and applications in electronic systems. Understanding the output configuration of a component is crucial for proper integration and operation within a circuit.
Positive - Quiescent Current
The quiescent current is defined as the current level in the amplifier when it is producing an output of zero.
110μA - 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.
25V - Voltage - Output (Min/Fixed)
Voltage - Output (Min/Fixed) refers to the minimum fixed output voltage level that an electronic component, such as a voltage regulator or power supply, is designed to provide under specified load conditions. This parameter ensures that the device consistently delivers a reliable voltage that meets the requirements of the connected circuits or components. It is critical for applications where stable and predictable voltage is necessary for proper operation.
0.8V - Topology
In the context of electronic components, "topology" refers to the arrangement or configuration of the components within a circuit or system. It defines how the components are connected to each other and how signals flow between them. The choice of topology can significantly impact the performance, efficiency, and functionality of the electronic system. Common topologies include series, parallel, star, mesh, and hybrid configurations, each with its own advantages and limitations. Designers carefully select the appropriate topology based on the specific requirements of the circuit to achieve the desired performance and functionality.
Buck - Control Mode
In electronic components, "Control Mode" refers to the method or mode of operation used to regulate or control the behavior of the component. This parameter determines how the component responds to input signals or commands to achieve the desired output. The control mode can vary depending on the specific component and its intended function, such as voltage regulation, current limiting, or frequency modulation. Understanding the control mode of an electronic component is crucial for proper integration and operation within a circuit or system.
CURRENT-MODE - Frequency - Switching
"Frequency - Switching" in electronic components refers to the rate at which a device, such as a transistor or switching regulator, turns on and off during operation. This parameter is crucial in determining the efficiency and performance of power converters, oscillators, and other circuits that rely on rapid switching. Higher switching frequencies typically allow for smaller component sizes but may require more advanced design considerations to manage heat and electromagnetic interference.
570kHz - Control Technique
In electronic components, "Control Technique" refers to the method or approach used to regulate and manage the operation of the component. This parameter is crucial in determining how the component functions within a circuit or system. Different control techniques can include analog control, digital control, pulse-width modulation (PWM), and various feedback mechanisms. The choice of control technique can impact the performance, efficiency, and overall functionality of the electronic component. It is important to select the appropriate control technique based on the specific requirements and characteristics of the application in which the component will be used.
PULSE WIDTH MODULATION - Synchronous Rectifier
Synchronous rectification is a technique for improving the efficiency of rectification by replacing diodes with actively controlled switches, usually power MOSFETs or power bipolar junction transistors (BJT).
No - 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.
800mV - Height1.75mm
- Length4.9mm
- Width3.91mm
- 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.
1.58mm - 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 - 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
TPS54331DR Pinout

TPS54331DR CAD Model
Symbol

Footprint

3D Model

TPS54331DR Alternatives
Part Number | Description | Manufacturer |
TPS54331D | 3.5V to 28V Input, 3A, 570kHz Step-Down Converter with Eco-mode 8-SOIC -40 to 150 | Texas Instruments |
TPS54331DG4 | 3.5V to 28V Input, 3A, 570kHz Step-Down Converter with Eco-mode 8-SOIC -40 to 150 | Texas Instruments |
TPS54331DRG4 | 3.5V to 28V Input, 3A, 570kHz Step-Down Converter with Eco-mode 8-SOIC -40 to 150 | Texas Instruments |
TPS54331DR Applications
Consumer applications such as set-top boxes, CPE equipment, LCD displays, peripherals, and battery chargers.
Industrial and car-audio power supplies.
5-V, 12-V, and 24-V distributed power systems.
Renesas Synergy™ Platform Development Kit (PDK) for S7G2 MCU.
12V/1.5A Output, 24V Input, Non-Synchronous Buck Converter.
12V/3A Output, 24V Input, Non-Synchronous Buck Converter.
5V/3A Output, 12V Input, Non-Synchronous Buck Converter.
3.3V/3A Output, 12V Input, Non-Synchronous Buck Converter.
TPS54331DR Manufacturer
Texas Instruments is a global semiconductor company that designs, manufactures, tests and sells analog and embedded processing chips for various markets. It was founded in 1930 as Geophysical Service Incorporated, a company that provided seismic exploration services for the oil industry. In 1951, it changed its name to Texas Instruments and entered the field of electronics, producing the first commercial silicon transistor in 1954. Since then, it has been a pioneer in many fields, such as integrated circuits, calculators, microprocessors, digital signal processors, and wireless communication. Today, it 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. Its products go into markets such as industrial, automotive, personal electronics, communications equipment and enterprise systems. It has a vision to create a better world by making electronics more affordable through semiconductors, and a mission to engineer progress by innovating and creating differentiated analog and embedded processing products.
Parts with Similar Specs
- ImagePart NumberManufacturerPackage / CaseNumber of PinsNumber of OutputsMax Output CurrentFrequency - SwitchingInput Voltage-NomVoltage - Input (Min)Min Output VoltageOutput VoltageMax Output VoltageVoltage - Output (Max)View Compare
TPS54331DR
8-SOIC (0.154, 3.90mm Width)
8
1
3 A
570kHz
12 V
3.5V
800 mV
25 V
25 V
25V
8-SOIC (0.154, 3.90mm Width)
8
1
3 A
35kHz ~ 500kHz
12 V
-
700 mV
16 V
46 V
-
8-SOIC (0.154, 3.90mm Width)
-
1
-
570kHz
12 V
3.5V
-
-
-
25V
8-SOIC (0.154, 3.90mm Width)
8
1
3 A
20kHz ~ 500kHz
6 V
-
1 V
50 V
50 V
-
Datasheet PDF
- PCN Design/Specification :
- PCN Assembly/Origin :
What is the difference between the D and DDA packages?
The D package is an 8-pin SOIC package, while the DDA package is an 8-pin SOIC package with a PowerPAD integrated circuit that improves the thermal performance of the device. The PowerPAD is connected to the GND pin and should be soldered to a large copper area on the PCB for optimal heat dissipation.
How can I calculate the external components for the TPS54331DR?
You can use the WEBENCH® Power Designer tool to create a custom design using the TPS54331DR. The tool will help you select the appropriate values for the input and output capacitors, the inductor, the feedback resistors, and the compensation components. You can also simulate the performance of your design and generate a schematic and a bill of materials.
How can I reduce the EMI emissions of the TPS54331DR?
The TPS54331DR has a spread spectrum feature that reduces the peak radiated and conducted emissions by modulating the switching frequency randomly. You can enable this feature by connecting a 10-kΩ resistor from the SS pin to the GND pin. You can also use a shielded inductor, a ferrite bead on the input, and a snubber circuit on the output to further reduce the EMI emissions.
UVG100 SENSOR PHOTODIODE 254NM 10MM[FAQ]: Datasheet, Features, and Parameters29 March 2022532
A6210 LED Driver: Datasheet, Pinout, Alternatives15 September 2021800
FGA25N120 IGBT: Application, Datasheet, Pinout14 October 202114047
CR2025 vs. CR2032: How to differentiate?03 November 202135393
BD437 Transistor: BD437 Pinout, Datasheet, Equivalent06 April 20223504
STM32F446ZET6 Microcontroller: Features, Applications and Datasheet14 December 20232040
NE555PWR Timer IC: Pinout, Feature, Datasheet11 May 20211372
dsPIC33FJ32MC202/204 and dsPIC33FJ16MC304: A Comprehensive Analysis29 February 2024118
Towards an Optoelectronic Chip That Mimics the Human Brain20 April 2022804
Introduction to Types of Diodes20 October 202515223
ON Semiconductor Provides Soft Fourth-Quarter Guidance. The Stock Drops.13 March 20241228
ChatGPT Will Drive Strong Long-term Growth in the Chip Market in the Future22 February 20232190
Chinese Chip Equipment Makers Thrive Amid US Restrictions24 October 2023599
VFD Driving Guide: What to Do When Your MCU Runs Out of Pins?22 July 2025774
Buffer Amplifier | Operating Principle, Advantages, and Applications21 July 20257821
Carbon Film vs Metal Film Resistors: Complete Comparison Guide19 May 20252944
Texas Instruments
In Stock: 330000
United States
China
Canada
Japan
Russia
Germany
United Kingdom
Singapore
Italy
Hong Kong(China)
Taiwan(China)
France
Korea
Mexico
Netherlands
Malaysia
Austria
Spain
Switzerland
Poland
Thailand
Vietnam
India
United Arab Emirates
Afghanistan
Åland Islands
Albania
Algeria
American Samoa
Andorra
Angola
Anguilla
Antigua & Barbuda
Argentina
Armenia
Aruba
Australia
Azerbaijan
Bahamas
Bahrain
Bangladesh
Barbados
Belarus
Belgium
Belize
Benin
Bermuda
Bhutan
Bolivia
Bonaire, Sint Eustatius and Saba
Bosnia & Herzegovina
Botswana
Brazil
British Indian Ocean Territory
British Virgin Islands
Brunei
Bulgaria
Burkina Faso
Burundi
Cabo Verde
Cambodia
Cameroon
Cayman Islands
Central African Republic
Chad
Chile
Christmas Island
Cocos (Keeling) Islands
Colombia
Comoros
Congo
Congo (DRC)
Cook Islands
Costa Rica
Côte d’Ivoire
Croatia
Cuba
Curaçao
Cyprus
Czechia
Denmark
Djibouti
Dominica
Dominican Republic
Ecuador
Egypt
El Salvador
Equatorial Guinea
Eritrea
Estonia
Eswatini
Ethiopia
Falkland Islands
Faroe Islands
Fiji
Finland
French Guiana
French Polynesia
Gabon
Gambia
Georgia
Ghana
Gibraltar
Greece
Greenland
Grenada
Guadeloupe
Guam
Guatemala
Guernsey
Guinea
Guinea-Bissau
Guyana
Haiti
Honduras
Hungary
Iceland
Indonesia
Iran
Iraq
Ireland
Isle of Man
Israel
Jamaica
Jersey
Jordan
Kazakhstan
Kenya
Kiribati
Kosovo
Kuwait
Kyrgyzstan
Laos
Latvia
Lebanon
Lesotho
Liberia
Libya
Liechtenstein
Lithuania
Luxembourg
Macao(China)
Madagascar
Malawi
Maldives
Mali
Malta
Marshall Islands
Martinique
Mauritania
Mauritius
Mayotte
Micronesia
Moldova
Monaco
Mongolia
Montenegro
Montserrat
Morocco
Mozambique
Myanmar
Namibia
Nauru
Nepal
New Caledonia
New Zealand
Nicaragua
Niger
Nigeria
Niue
Norfolk Island
North Korea
North Macedonia
Northern Mariana Islands
Norway
Oman
Pakistan
Palau
Palestinian Authority
Panama
Papua New Guinea
Paraguay
Peru
Philippines
Pitcairn Islands
Portugal
Puerto Rico
Qatar
Réunion
Romania
Rwanda
Samoa
San Marino
São Tomé & Príncipe
Saudi Arabia
Senegal
Serbia
Seychelles
Sierra Leone
Sint Maarten
Slovakia
Slovenia
Solomon Islands
Somalia
South Africa
South Sudan
Sri Lanka
St Helena, Ascension, Tristan da Cunha
St. Barthélemy
St. Kitts & Nevis
St. Lucia
St. Martin
St. Pierre & Miquelon
St. Vincent & Grenadines
Sudan
Suriname
Svalbard & Jan Mayen
Sweden
Syria
Tajikistan
Tanzania
Timor-Leste
Togo
Tokelau
Tonga
Trinidad & Tobago
Tunisia
Turkey
Turkmenistan
Turks & Caicos Islands
Tuvalu
U.S. Outlying Islands
U.S. Virgin Islands
Uganda
Ukraine
Uruguay
Uzbekistan
Vanuatu
Vatican City
Venezuela
Wallis & Futuna
Yemen
Zambia
Zimbabwe











