DC824A

DC824A demonstration circuit is a multi-display LED controller featuring the LTC3208. The LTC3208 is a highly integrated multi-display LED controller. This device contains a high efficiency, low noise charge pump to provide power for a MAIN, SUB, and auxiliary (AUX) white LED displays, a RGB color display, and a camera (CAM) display with flash capabilities. The four auxiliary LEDs may be individually configured to the MAIN, SUB, CAM, or AUX display. The LTC3208 requires only four small ceramic capacitors plus one resistor to form a complete 5-panel LED power supply and current controller. The maximum display currents are set with a single 24.3kohm resistor. Current for each LED is controlled with a precision internal current source. Dimming and ON/OFF control for al displays are achieved via a 2-wire I2C interface. The RGB or SUB panel may be disabled via the ENRGB/S pin. 256 dimming states exist for the MAIN and SUB panels.

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The LEDs on this demo board produce very bright light. Do not look directly at LEDs when power is applied. Serious eye damage may occur.