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    built in discharge / over charge circuit for flash light using single cell 10440

    Hi guys, I am designing a torch that is running 3 x XPC (RGB) at 100ma that can take either a AAA NIMH or 10440 to be used for the circus. There is a TI buck/ boost converter in the circuit and a PIC micro. I am guessing the circuit will be fine if protected 10440 are used but i am concerned...
  2. H

    1 amp LED driver that can boost voltage from 1.2v to run 4x cree xpc

    Great, more good news. Sounds like the 10440 is the go for a simple circuit. thanks
  3. H

    1 amp LED driver that can boost voltage from 1.2v to run 4x cree xpc

    Ahh, had a feeling there was something I was missing. How common are the 10440 and the availability of chargers? Thinking that I will still need a circuit booster of some sort though as once the 10440 voltage drops below the min. required for the LED they will stop working and Im guessing I...
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    1 amp LED driver that can boost voltage from 1.2v to run 4x cree xpc

    Hi Tylernt, thanks for the suggestions. I will look into the specs on the PIC Micro as to what current it can handle. If need be i will use a different Flash chip for this. I undesrtand what you are saying about the current being shared when multiple LEDs on at once and I want to avoid this...
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    1 amp LED driver that can boost voltage from 1.2v to run 4x cree xpc

    <br><br>Hi, <br>Sorry for the slow reply to your post, I have been away for some time. Thanks for the advice. The application is for LED juggling equipment. The LEDs drive fibre optic that is housed inside different pieces of equipment. The current model I make runs 3 x red, green, blue 5mm cree...
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    1 amp LED driver that can boost voltage from 1.2v to run 4x cree xpc

    Hi Guys I am looking at making a circuit that can run a red, green, blue, white either cree XPC or XPE LEDs at 250ma. The LEDs will be run in parallel as they will be controlled with a processor of some sorts to create different effects etc. My power source is a 1.2v AAA 900 mah battery. I am...

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