TPS54331DDAR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments TPS54331DDAR is a 3-A, 28-V input, current-mode buck DC/DC converter with 570 kHz switching frequency in an 8-pin SOIC package. It integrates a high-side MOSFET and operates from 3.5 V to 28 V input, delivering regulated output with adjustable voltage. Available from stock worldwide with competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- TPS54331DDAR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.8630(MOQ 7)
- Temp Range
- -40.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Integrated high-side MOSFET enables compact 3-A buck converter designs without external switching transistor
- Wide 3.5 V to 28 V input voltage range supports diverse power rails from 5 V to 24 V systems
- 570 kHz fixed switching frequency reduces output filter size and improves transient response in space-constrained layouts
Applications
The TPS54331DDAR is well suited for point-of-load power conversion in industrial automation, telecom infrastructure, and embedded computing systems where a 12 V or 24 V bus must be stepped down to 1.8 V to 5 V logic rails. Its current-mode control and integrated FET make it ideal for compact power modules on motor-drive boards and programmable logic controller power stages. Battery-powered instruments and automotive test equipment also benefit from its wide input range and high efficiency across load conditions.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 28V |
| Input Voltage-Min | 3.5V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 3A |
| Output Voltage-Max | 25V |
| Output Voltage-Min | 0.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, LOW PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 570kHz |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TPS54331DDAR:
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Frequently Asked Questions
What is the maximum output current the TPS54331DDAR can supply continuously?
The TPS54331DDAR is rated for 3 A continuous output current. The integrated high-side MOSFET and current-mode control loop maintain regulation from light loads up to the 3 A maximum, with an over-current protection threshold set to approximately 4 A to guard downstream circuitry.
Which input voltage range is compatible with 12 V and 24 V industrial bus rails for the TPS54331DDAR?
The TPS54331DDAR accepts an input voltage from 3.5 V to 28 V, making it directly compatible with both 12 V and 24 V industrial bus rails. The wide range allows a single BOM to serve multiple system variants, and the device handles input transients up to 28 V without external clamping.
How does the 570 kHz switching frequency of the TPS54331DDAR affect output filter component sizing?
Operating at 570 kHz, the TPS54331DDAR allows the output inductor to be as small as 3.3 µH and the output capacitor to be reduced compared to lower-frequency designs. Higher switching frequency shrinks the filter footprint significantly, which is critical for dense PCB layouts in 8-pin SOIC form factor power stages.
Is TPS54331DDAR a drop-in alternative to the TPS54331DR, and what differs between these two variants?
The TPS54331DDAR and TPS54331DR share identical electrical specifications and the same 8-pin SOIC pinout, with 3 A output, 28 V input maximum, and 570 kHz switching. The DDAR suffix denotes the tape-and-reel 2500-unit packaging option, while DR is also tape-and-reel but at a 2500-count standard reel — both are functionally interchangeable for PCB assembly.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 7+ | $1.2838 | $8.99 |
| 10+ | $1.0897 | $10.90 |
| 25+ | $0.9549 | $23.87 |
| 500+ | $0.9526 | $476.29 |
| 1000+ | $0.9486 | $948.60 |
| 2500+ | $0.8630 | $2157.50 |
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