XR46073

Two-Step LED Current Controller
Data Sheet

Description

The XR46073 is a two-step LED current controller for AC step driving with improved line regulation primarily for A19 LED bulb applications. It integrates two steps of current control to the LED strings and greatly improves the line regulation of the circuit by monitoring the line voltage and adjusting LED drive current proportionally.

The XR46073 can drive an external N-channel power MOSFET to regulate the current flowing through a high voltage (HV) LED string. It works as a constant current sink with linear type overvoltage protection (OVP), linear type over temperature protection (OTP) and line regulation compensation. It is suitable for applications with a rectified AC voltage source. The XR46073 is ideal for replacing incandescent light bulbs. The PCB design can be very compact to meet various shape requirements.

Features

  • Two-current step control from a single device
  • Excellent system power regulation over AC line variation range
  • 6V to 78V chip supply voltage range
  • Over temperature protection
  • Overvoltage protection
  • 2mm x 2mm 6-lead DFN package

System:

  • Single board LED lighting solution available
  • No electrolytic capacitor or MOV required
  • Scalable architecture allows optimization of performance vs. cost
  • Driver onboard and chip onboard design solution available which minimize process flow and assembly cost
  • High PF and Low THD performance
  • Flexible PCB layout options
  • TRIAC dimmable
  • All solid state components

Application

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

Design Tools

Packaging

Parts & Purchasing

Part Number Pkg Code RoHS Min Temp Max Temp Status Buy Now Order Samples
XR46073IHBTR -40 85 Active Order
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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.

Quality Documents

Additional Quality Documentation may be available, please contact customersupport@maxlinear.com.

Frequently Asked Questions

The best way to determine this is to go to maxlinear.com and type the part into the search function. At or near the top of the results you should see something that looks like:
 
 
 

In this example, we looked for XRA1201. Click on part number header or on the link at the bottom of the result.  This brings you to the product page. For example:

 
 
 

Click on Parts & Purchasing, highlighted with the blue arrow above. The screen changes to:

 
 
 

Notice the status column and the “Show obsolete parts” link.  A legend tells you the definition of the different statuses. Click on the “Show obsolete parts” link to see EOL or OBS part numbers along with the Active part numbers, the legend still present:

 
 
 

Another method to find out if a part is OBS or EOL is to click on SUPPORT at the top:

 
 
 

And then Product Change Notifications:

 
  
 

Type the part into the search, and click on one of the part numbers from the drop down menu. Then you can look for the Product Discontinuation Notice, which generally is at the top of the list, for example:

 
 
 

If you see this, it tells you that this particular orderable part has been discontinued and when the last order date is, or was. If you click on the file, then you can view the notice we sent about this if you purchased the part in the recent past. It may also advise of a replacement part. When an orderable part first becomes discontinued, Product Discontinuation Notices are sent are sent to those who have purchased the parts in the recent past, if purchased directly, with a dated opportunity to place a last order.