Overview
| Steps | 2 |
|---|---|
| Max Voltage (V) | 78 |
| IOUT MAX (mA) | 180 |
| Power Line Regulation | Y |
| Dimmable | Y; Triac |
| Application | downlight, high bay, specialty, architectural |
| Package | DFN-6 |
| Features | 2-step integrated driver, Improved line regulation, Built in thermal foldback and VIN pin clamp |
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.
- 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
- LED Lighting Applications
- Downlight
- High bay
- Specialty
- Architectural
Documentation & Design Tools
| Type | Title | Version | Date | File Size |
|---|---|---|---|---|
| Data Sheets | XR46073 Two-Step LED Current Controller with Line Regulation Compensation | 1C | August 2018 | 719.5 KB |
| Product Flyers | Two-Step LED Current Controller Cost Effective LED Lighting Solution | 00 | November 2020 | 521.6 KB |
| Product Brochures | Power Management Brochure | May 2024 | 7.1 MB | |
| Product Briefs | XR46073 Product Brief | November 2016 | 144.7 KB |
Quality & RoHS
Parts & Purchasing
| Part Number | Pkg Code | Min Temp | Max Temp | Status | Suggested Replacement | PDN |
|---|---|---|---|---|---|---|
| XR46073IHBTR | TDFN6 2x2 | -40 | 85 | OBS |
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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FAQs & Support
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