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Exact specifications should be obtained from the product data sheet.
| Manufacturer Product Number | L4973V3.3 |
| Manufacturer | STMicroelectronics |
| NavitasChip Part Number | NAVI-585934 |
| Description | IC REG BUCK ADJ/0.5V 3.5A 18DIP |
| Spec | 18-DIP (0.300", 7.62mm) |
| Package | Tube |
| Datasheet | Datasheet |
Product Attributes
| Type | Description |
|---|---|
| Category | Voltage Regulators - DC DC Switching Regulators |
| Manufacturer | STMicroelectronics |
| Package | Tube |
| Product Status | Obsolete |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable (Fixed) |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 8V |
| Voltage - Input (Max) | 55V |
| Voltage - Output (Min/Fixed) | 0.5V (3.3V) |
| Voltage - Output (Max) | 50V |
| Current - Output | 3.5A |
| Frequency - Switching | 100kHz ~ 300kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Mounting Type | Through Hole |
| Supplier Device Package | 18-DIP |
| Part Status | Active |
Documents & Media
| Resource Type | Link |
|---|---|
| Datasheet | STMicroelectronics L4973V3.3 Datasheet |
| Product Image | View Large Image |
Environmental & Export Classifications
| Attribute | Description |
|---|---|
| RoHS Status | RoHS Compliant |
| REACH Status | REACH Unaffected |
| ECCN | EAR99 |
Product Description
The L4973V3.3 is a DC-DC Switching Voltage Regulator manufactured by STMicroelectronics (ST). Integrated Circuit Regulator Buck Adjustable/0.5V Supply 3.5a in 18-Pin DIP Package, housed in a compact 18-DIP package.
Struggling with end-of-life buck converter transition without board redesign? Our global sourcing network ensures reliable supply for your projects.
Key Technical Specifications
- Output Type: Adjustable (Fixed)
- Operating Temperature: -40°C ~ 150°C (TJ)
- Mounting: Through Hole
- Package: 18-DIP (0.300", 7.62mm)
- Device Package: 18-DIP
- RoHS Compliant
Applications
Designed for:
- IoT devices
- industrial automation
- consumer electronics
- boost converter and step-up power conversion
- inverting converter and negative voltage rail generation
Why Choose NavitasChip for L4973V3.3?
NavitasChip offers competitive market pricing for the L4973V3.3 and thousands of other electronic components.
- Availability: Available Now
- Packaging: Available in factory Tube or Custom Tube Quantity. 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
We offer express global shipping for L4973V3.3, serving customers in Hong Kong, Taiwan, and worldwide.
L4973V3.3 - Contact our sales team.
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 STMicroelectronics
More in Voltage Regulators - DC DC Switching Regulators
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- For out-of-stock or unpriced items, please submit an RFQ and we will respond within 24 hours.
Supply Information
- Spot Stock: Available from our verified global supply network.
- Franchise Sources: Components from authorized distribution channels when available.
- OEM Surplus: Excess inventory from OEM and EMS production lines.
- Qualified Suppliers: Provided by vetted independent suppliers who meet our quality and traceability standards.
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: 2,709 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