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Exact specifications should be obtained from the product data sheet.
| Manufacturer Product Number | TPS543421RQFR |
| Manufacturer | Texas Instruments |
| NavitasChip Part Number | NAVI-26489870 |
| Description | 3.8V TO 18V INPUT, 4A, 200KHZ TO |
| Spec | 9-PowerVFQFN |
| Package | Tape & Reel (TR) |
| Datasheet | Datasheet |
Product Attributes
| Type | Description |
|---|---|
| Category | Voltage Regulators - DC DC Switching Regulators |
| Manufacturer | Texas Instruments |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 3.8V |
| Voltage - Input (Max) | 18V |
| Voltage - Output (Min/Fixed) | 0.6V |
| Voltage - Output (Max) | 18V |
| Current - Output | 4A |
| Frequency - Switching | 200kHz ~ 2.2MHz |
| Synchronous Rectifier | Yes |
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
| Supplier Device Package | 9-VQFN-HR (1.5x2) |
| Part Status | Active |
Documents & Media
| Resource Type | Link |
|---|---|
| Datasheet | Texas Instruments TPS543421RQFR Datasheet |
| Product Image | View Large Image |
Environmental & Export Classifications
| Attribute | Description |
|---|---|
| RoHS Status | RoHS Compliant |
| REACH Status | REACH Unaffected |
| ECCN | EAR99 |
Product Description
The TPS543421RQFR is a DC-DC Switching Voltage Regulator manufactured by Texas Instruments (TI). 3.8V Supply to 18V Supply Input, housed in a compact 9-VQFN-HR (1.5x2) package.
Facing long factory lead times exceeding 40 weeks on power management ICs? NavitasChip provides agile sourcing solutions to keep your production running.
Key Technical Specifications
- Output Type: Adjustable
- Operating Temperature: -40°C ~ 150°C (TJ)
- Mounting: Surface Mount
- Package: 9-PowerVFQFN
- Device Package: 9-VQFN-HR (1.5x2)
- RoHS Compliant
Applications
Perfect for:
- professional equipment
- synchronous rectification for high-efficiency power delivery
- flyback isolated DC-DC conversion for off-line power
- fast load transient response for digital core power rails
- embedded computing and edge gateway power management
Why Choose NavitasChip for TPS543421RQFR?
NavitasChip offers competitive market pricing for the TPS543421RQFR and thousands of other electronic components.
- Availability: Available Now
- Packaging: Available in factory Tape & Reel (TR) or Cut Tape. All custom quantities are professionally repackaged with ESD Shielding and Vacuum-Sealed MBB (Moisture Barrier Bags) in strict adherence to MSL standards.
- Fast Shipping: Ships from Shenzhen / Hong Kong / Singapore via DHL/FedEx/UPS
- Quality Assurance: Inbound check with MPN and Date Code review
- Technical Support: Datasheet and compliance documentation available
Global Shipping
Flexible shipping arrangements for TPS543421RQFR with regional warehouse support.
TPS543421RQFR - Request a quote today.
Disclaimer: NavitasChip is an independent distributor of electronic components. We are not affiliated with, endorsed by, or an authorized distributor for the manufacturers listed on this page. All trademarks and brand names are the property of their respective owners and are used solely for identification purposes.
Stock quantities are dynamic and updated in real-time. For large quantity orders (1,000+ units), please contact us for real-time stock verification and custom pricing.
More from Texas Instruments
More in Voltage Regulators - DC DC Switching Regulators
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About Shipping Costs
If you use our shipping account, shipping fees will be paid at checkout. If you use your own account, shipping fees will be settled directly between you and the courier company.
Note: Customers are responsible for all customs duties, taxes, or other charges. NavitasChip is not responsible for any additional fees after the package is shipped.
Shipping Methods
We offer shipping services via DHL, FedEx, UPS, and SF Express.
Delivery Time
- Spot Stock (HK/SZ warehouse): Ships within 24 hours when order confirmed before 14:00 GMT+8.
- Verified Supplier Network: Ships within 3 business days after sourcing confirmation.
- Out-of-stock items: Lead times provided per quote (typically 2-4 weeks).
- Actual delivery time depends on your selected courier service (DHL/FedEx/UPS/SF Express).
Quality Assurance
- 60-Day Quality Pledge — every order covered against material defects
- Third-Party Lab Testing available (AS6081 Process Aligned, ISO/IEC 17025 verification)
- RoHS / REACH Compliance verified through OCM official databases
- Distributor Certificate of Conformance (CoC) issued with every shipment
In Stock: 2,970 pcs
Ready to ship immediately
Lead Time
18 Weeks
Factory standard
Need a quote? We'll respond within 24 hours.
Payment Methods
T/T
WU
Delivery Services
TNT
SF