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Texas Instruments TPS54331DR
- Part No.:
- TPS54331DR
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS54331DR.pdf
- Description:
- IC REG BUCK ADJ 3A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,744
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Product details
Overview
TPS54331DR from Texas Instruments is a 3 A step-down (buck) DC-DC converter with integrated high-side MOSFET, designed for industrial, embedded, and consumer electronics applications requiring efficient, compact, and reliable power delivery. The device provides wide input voltage support, adjustable output voltage, and multiple protection features to ensure safe operation across harsh environments.
As a high-performance buck regulator, TPS54331DR is suitable for powering microcontrollers, FPGAs, industrial controllers, battery-powered modules, and other embedded systems. Engineers referencing the TPS54331DR datasheet and pinout can integrate it into power-supply designs demanding compact layout, high efficiency, and robust protection.
Technical Context
The TPS54331DR operates as a synchronous buck converter with an integrated high-side MOSFET, enabling regulated output voltage from a wide input range of 3.5 V to 28 V. It supports programmable switching frequency up to 570 kHz, adjustable output via external resistor divider, Eco-mode™ and PWM operation, and comprehensive protection including over-current, over-voltage, under-voltage lockout, and thermal shutdown.
This device is typically used in embedded industrial power rails, battery-powered modules, network interface boards, and consumer electronics, where compact footprint, stable output, and high efficiency are required. Its design simplifies power management and reduces external component count.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Device Type | 3 A step-down (buck) DC-DC converter; integrated high-side MOSFET provides compact, high-efficiency conversion |
| Input Voltage | 3.5 V to 28 V; allows flexible power-source selection for industrial and embedded systems |
| Output Voltage | Adjustable via external resistor divider; supports various load and system voltage requirements |
| Switching Frequency | Up to 570 kHz programmable; trade-off between efficiency, ripple, and component size |
| Peak Output Current | 3 A continuous; sufficient for microcontrollers, FPGAs, and industrial loads |
| Package | 8-pin SOIC (DR); compact for PCB layout and embedded designs |
| Operating Temperature | -40 °C to +125 °C; suitable for industrial and embedded environments |
| Protections | Over-current, over-voltage, under-voltage lockout, and thermal shutdown for safe operation |
| Efficiency | High efficiency in Eco-mode™ and PWM operation; reduces heat and energy loss |
Pinout & Package
The TPS54331DR pinout includes VIN, SW, FB, EN, GND, COMP, BOOT, and PGOOD. Proper PCB layout should ensure low-inductance paths for SW, decoupling near VIN, and clean ground plane for stability.
| Pin / Function | PCB Design and Circuit Role |
|---|---|
| VIN | Input supply; decoupling required close to pin to minimize ripple |
| SW | Switch node; carries high current to output inductor, requires careful trace width and layout |
| FB | Feedback input; sets output voltage with external resistors |
| EN | Enable pin; logic high turns on the regulator |
| GND | Device ground; reference for analog and power stages, critical for loop stability |
| COMP | Compensation pin; connects external RC network for loop control |
| BOOT | Bootstrap pin for high-side MOSFET gate drive |
| PGOOD | Power-good output; indicates output within regulation limits |
Key Features
- 3 A step-down (buck) DC-DC converter with integrated high-side MOSFET
- Wide input voltage range: 3.5 V to 28 V
- Adjustable output voltage via external resistor divider
- Programmable switching frequency up to 570 kHz
- High efficiency in Eco-mode™ and PWM operation
- Protection features: over-current, over-voltage, under-voltage lockout, thermal shutdown
- 8-pin SOIC package; compact for PCB and embedded systems
- Operating temperature: -40 °C to +125 °C
Applications
| Embedded & Industrial Systems | Battery-Powered Modules |
|---|---|
|
Use Scenario: Power supply for microcontrollers, FPGAs, and industrial controllers IC Role: Provides regulated 3 A output voltage with high efficiency Use Value: Ensures compact, stable power delivery for embedded and industrial systems |
Use Scenario: Battery-powered devices and modules IC Role: Converts battery voltage to regulated system voltage Use Value: Maintains efficient power delivery and extends battery life |
| Networking & Communication | Consumer Electronics |
|
Use Scenario: Powering network interface boards, routers, and gateways IC Role: Provides stable supply voltage for high-speed digital circuits Use Value: Improves system reliability and reduces voltage ripple |
Use Scenario: Portable and embedded consumer devices IC Role: Supplies regulated step-down voltage to low-voltage logic Use Value: Delivers compact, efficient power with integrated protection |
Equivalent & Alternatives
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54332DR | Higher output current (3.5 A) | Use when system requires more load capacity | Choose TPS54331DR for 3 A, TPS54332DR for 3.5 A loads |
| TPS54334DR | Different input voltage range or efficiency profile | High-efficiency regulation in alternate input systems | Check input voltage and efficiency requirements before substitution |
Quality
TPS54331DR should be sourced as original Texas Instruments components. Quality verification includes electrical testing, thermal characterization, and lot traceability according to industrial and embedded standards.
Availability
TPS54331DR available at Aetrix Electronics, suitable for embedded, industrial, and consumer power regulation platforms requiring reliable 3 A DC-DC conversion and stable supply chain.
Manufacturer
Texas Instruments provides analog ICs, power management solutions, and DC-DC converters for industrial, consumer, and embedded applications.
FAQ
What is TPS54331DR used for?
It is used as a 3 A step-down DC-DC converter for embedded, industrial, and consumer electronics power regulation.
What is the input voltage range?
3.5 V to 28 V input range supports a variety of system power sources.
What package is available?
8-pin SOIC (DR) for compact PCB integration.
Does TPS54331DR include protections?
Yes. It has over-current, over-voltage, under-voltage lockout, and thermal shutdown protection features.
TPS54331DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Eco-Mode™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 28V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 25V
- Current - Output:
- 3A
- Frequency - Switching:
- 570kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TPS54331DR FAQ
1.How can I place an order for TPS54331DR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54331DR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS54331DR reliable?
The price and inventory of TPS54331DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54331DR is usually 5 days.
3.What payment methods are accepted for TPS54331DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54331DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54331DR?
TPS54331DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54331DR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS54331DR?
For technical support, including TPS54331DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54331DR requirements.
6.How does Aetrix verify that TPS54331DR is sourced from the original manufacturer or authorized distributors?
All TPS54331DR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS54331DR meets industry standards.
7.What is the process for return or replacement of TPS54331DR?
All TPS54331DR units undergo pre-shipment inspection (PSI). If there is an issue with TPS54331DR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS54331DR part is unused and in its original packaging.
Return procedure for TPS54331DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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