Dimming the light intensity changes

 Dimming the light intensity changes

LED Bulb

    Some portable devices based on ambient light conditions to adjust the brightness of its light output, some devices in a short period of idle time reduce its intensity through the software. Which require LED with adjustable light intensity, and such regulation should be in the same way  LED Strip to influence each forward current in order to avoid possible color coordinates shift. Digital to analog converter through the use of small control current can be obtained resistor RSET uniform luminance.

    6 resolution converters, such as the MAX5362 with an I2C interface or SPI interface with M AX5365, can provide 32 brightness adjustment (Figure 10). Since forward current will affect the  LED Module color coordinates, so LED white light will change with the change in light intensity. But this is not a problem, because the same forward current will cause the group in each diode emit the same light.