Overview
| Steps | 2 |
|---|---|
| Max Voltage (V) | 78 |
| IOUT MAX (mA) | 180 |
| Power Line Regulation | N |
| Dimmable | Y; Triac |
| Application | downlight, high bay, specialty, architectural |
| Package | DFN-6 |
| Features | 2-step integrated driver, Smallest footprint solution, Built in thermal foldback and VIN pin clamp |
The XR46050 is a two-step LED current controller for bulb applications powered directly by an alternative current (AC) voltage source. It can drive an external N-channel power MOSFET to regulate the current flowing through a high voltage (HV) LED string.
The XR46050 works as a constant current regulator to control two-step current levels for AC step drivers with a simple structure. It also provides linear-type over temperature protection (OTP).
The PCB design can be very compact to meet various shape requirements. It is especially suitable for replacing “A” series LED light bulbs and candelabra LED bulbs.
- Device
- 6V to 78V chip supply voltage range
- Over temperature protection
- Single board LED lighting solution available
- DFN 2 x 2-6L packages
- System
- All solid state components
- No electrolytic capacitor required
- Fewer components and simple solution for LED lighting
- Scalable architecture allows optimization of
- performance vs. cost
- Driver-on-board and chip-on-board design solution available which minimizes process flow and assembly cost
- High PF and Low THD performance
- Flexible PCB layout options
- LED Lighting Applications
- Downlight
- High bay
- Specialty
- Architectural
Documentation & Design Tools
| Type | Title | Version | Date | File Size |
|---|---|---|---|---|
| Data Sheets | XR46050 Two-Step LED Current Controller | 1B | July 2018 | 405.2 KB |
| Product Brochures | Power Management Brochure | R03 | April 2025 | 6.2 MB |
| Product Briefs | XR46050 Product Brief | November 2016 | 145.6 KB |
Quality & RoHS
Parts & Purchasing
| Part Number | Pkg Code | Min Temp | Max Temp | Status | Suggested Replacement | PDN |
|---|---|---|---|---|---|---|
| XR46050IHBTR | TDFN6 2x2 | -40 | 85 | OBS | XR46084EHTR-ADJ (x2) |
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.
Packaging
| Pkg Code | Details | Quantities | Dimensions |
|---|---|---|---|
| TDFN6 2x2 |
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Notifications
FAQs & Support
Search our list of FAQs for answers to common technical questions.
For material content, environmental, quality and reliability questions review the Quality tab or visit our Quality page.
For ordering information and general customer service visit our Contact Us page.
Submit a Technical Support Question As a New Question
Visit the product page for the part you are interested in. The part's status is listed in the Parts & Purchasing section. You can also view Product Lifecycle and Obsolescence Information including PDNs (Product Discontinuation Notifications).
To visit a product page, type the part into the search window on the top of the MaxLinear website.
In this example, we searched for XR33180. Visit the product page by clicking the part number or visit the orderable parts list by clicking "Orderable Parts".
The Parts & Purchasing section of the product page shows the Status of all orderable part numbers for that product. Click Show obsolete parts, to see all EOL or OBS products.
