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    | Partname: | LM3570SDX |  
    | Description: | 2.7 V to 5.5 V, low noise white LED driver system |     
    | Manufacturer: | National Semiconductor |  
    | Package: | LLP |  
    | Pins: | 14 |  
    | Oper. temp.: | -40 to 105 |  
    | Datasheet: | PDF (352K). Click here to download *) |  
    The LM3570 device provides a complete LED driver solution for wireless handsets and other portable devices using a display and keypad. With three constant current sources, up to three white LEDs can be used for display lighting with excellent current matching (0.3% typ.). The regulated 4.35V output voltage is perfect for driving auxiliary keypad LEDs in voltage mode.  |  
    
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    Click here to download LM3570SDX Datasheet*) | 
  
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