LM3466 Smart Linear LED Driver
Smart Linear LED Driver for Multi-Channel
Highly-integrated Driver Utilizes Unique Control Method to Equalize Current Between Multiple LED Strings
The LM3466 integrates a linear LED driver for lighting systems which consist of multiple LED strings powered by a constant current power supply. The current provided by the supply is equalized in a pre-set ratio to each active LED string (an active LED string refers to a fully turn-on LED string) disregarding the number of string connected to the supply, even the forward voltage of each LED string is different. If any LED string opens during operation, the LED current of all remaining active LED strings can equalize the current of the supply automatically. As a result, the overall brightness of the lighting system is maintained even if some LED strings open during operation.
Key Features
- Easy to design and use for lighting systems consists of multiple LED strings
- Works with a Constant Current power supply. No communication to/from the constant current power supply is required
- Automatically equalizes the current of every active LED string, even the forward voltage of each string is different
- Total luminance output of the system is nearly not affected if some LED strings open during operation
- Wide input voltage range from 6V to 70V
- Integrated 70V 1.5A MOSFET with 2A current limit
- Operating with minimum voltage overhead to maximize power efficiency
Applications Examples
- Streetlights
- Solid State Lighting Systems
Price & Inventory
| Supplier | Article-ID | Avail. Qty. | Price | Min. Pack Qty. | Lead time Supplier | RoHs* |
|---|---|---|---|---|---|---|
|
National Semiconductor |
LM3466MR/NOPB |
380 |
1.081 EUR |
95 |
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|
National Semiconductor |
LM3466MRX/NOPB |
1.081 EUR |
2500 |
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