lpcware

Projects you did with LPC800?

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by MarcVonWindscooting on Fri Jul 17 04:26:29 MST 2015
Hello guys,

I'm simply curious what circuits you've built with one of the LPC800 controllers. Tell me!  ;-)

I've done the following (some unfinished, because I 'paused' uC programming nearly one year)...

- Periodic timer for my SLR camera
- IR-Thermometer (MLX90614/5) activation of SLR camera and flashlight
- Long distance IR-control or LED torch
- frequency doubler for a 3D-Projector's color wheel (at work)

Most of my LPC800 projects have focus on low power consumption (battery powered).

Currently I'm considering a high power LED-string off-line current regulator using LPC81x, IRS44273 gate driver, IRS25751 startup IC (or a IXYS depletion mode FET). Current sensing should be done with a source-connected series resistor + ACMP and pulse generation with SCT.
This approach should allow for a standby current of at most 500uA - a value also found for standard LED-driver controllers that don't provide a programmable interface. That's a wasted power of less than 200mW even at rectified 230V AC...

Marc

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