led driver ic

  1. C

    Understanding the RAM address of a 7 segment 4 digit display( HT1668 )

    hi there, Iv'e salvaged a 7 segment display and i comes with an ht1668 driver ic with half duplex spi for communication, i was reading the datasheet and understood the communication side, but couldn't understand how and where data should be written to the driver, the datasheet doesnt provide...
  2. PatteGris90

    Led boat lights

    Hi all, I am trying to build some underwater lights for my boat. I am using 10 pcs of 3W RGB 6 pin leds in series and i have tested the output. I am currently using a constant current constant voltage driver. I would like to make a pcb capeable of driving the 10 leds and controling them with...
  3. A

    AC DC rechargeable Led Bulb Driver

    AC DC rechargeable Led bulb driver mainly build with two different ICS. First one is drive several leds in series when power is available. Second one is drive several leds in parallel, also charge the lithium battery, when power cut happens the second IC drive the leds in parallel using the...
  4. A

    design 4A led driver for automotive application

    hello I am designing high power led lamp for vehicles using this led. led datasheet this led has If up to 6A and Vf is around 3 V, I am going to use it at 4A for longer life. My input voltage source is car battery so voltage range is 12V - 16 V I am hoping to connect two leds in series. since...
  5. Dan Aronin

    XL6005 understanding the datasheet

    Hi all, a driver circuit needed for lighting a 30W LED* (one color) - I had a look at the XL6005 datasheet and wanted to make sure I understand it properly based on the following diagram**: 1. To drive the LED with 300mA I should make RS = 0.73 ohm (ILed=0.22/0.73=0.3A) 2. To limit the max...
  6. M

    LED Driver IC 51LP

    Hi All, This is my 1st post and I apologize if it is in a wrong section. Please feel free to delete or move to the right section. I have a 9W LED bulb and it has a transistor like SOT92 IC marked as 51LP and beneath it marking F48, which is blown up. I want to repair this and coudln't find the...