Active Load Current Regulator for Phase-Cut Dimmable AC Direct Drive LED Lamp
Data Sheets OBS (Obsolete)


Steps 1
Max Voltage (V) 80
IOUT MAX (mA) 60
Power Line Regulation
Dimmable Y; Improved Triac
Application downlight, high bay, specialty, architectural
Package SOT23-3
Features For use in TRIAC dimmable applications
Show more

The XR46010 is an active load current regulator for phase-cut dimmable AC direct drive LED lamp systems. The active load circuit can provide the holding current for the TRIAC and also the charging current path of the R/C circuit in a dimmer. It can help to stabilize the TRIAC operation and increase the dimming range of the lamp system.

The XR46010 is configured to work in parallel with an LED string. It conducts the current when the LED string is in the “off” state, and stops conducting the current when the LED string is in the “on” state.

The active load circuit can be placed on the same board with the LED string or a separate board in front of the LED board. The design is very flexible to meet various shape requirements. It is especially suitable for LED light bulbs and tubes.

  • 3V to 80V input operation range
  • 250mV low current sense voltage
  • Linear over temperature protection

  • LED Lighting Applications
    • Downlight
    • High bay
    • Specialty
    • Architectural

Documentation & Design Tools

Type Title Version Date File Size
Data Sheets XR46010 Active Load Current Regulator for Phase-Cut Dimmable AC Direct Drive LED Lamp 1C July 2018 478.6 KB
Product Brochures Power Management Brochure October 2020 2.4 MB
Product Briefs XR46010 Product Brief October 2016 139.5 KB
Register for a myMxL account or Login to myMxL to view all Technical Documentation & Design Tools.

Quality & RoHS

Part Number RoHS | Exempt RoHS Halogen Free REACH TSCA MSL Rating / Peak Reflow Package
XR46010ISBTR N Y Y Y Y L1 / 260ᵒC TSOT3

Click on the links above to download the Certificate of Non-Use of Hazardous Substances.

Additional Quality Documentation may be available, please Contact Support.

Parts & Purchasing

Part Number Pkg Code Status Suggested Replacement PDN
Show obsolete parts
Part Status Legend
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.


Pkg Code Details Quantities Dimensions PDF
  • JEDEC Reference:
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic:
  • ThetaJA: 267ºC/W
  • Bulk Pack Style:
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: 3000
  • Quantity per Tube: n/a
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 180 x 8 x 4
  • Tape & Reel Unit Orientation: 1 lead near sprocket hole
  • Dimensions: mm
  • Length: 2.92
  • Width: 1.65
  • Thickness: 0.9
  • Lead Pitch: 1.9


Distribution Date Description File
08/30/2022 Product Discontinuation Notice
07/11/2017 Product Discontinuation Notification
01/27/2017 Update of device and mask IDs due to IML to Exar technology transfer.
11/15/2016 Standard reel quantity will change from 2500 pieces to 3000 pieces.

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 XRA1201.  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.