Part Number : SGL8023W
Function : Single-channel touch chip for LED lightness regulation
Package : SOP 8, DIP 8 Pin Type
Manufacturers : Sigmachip ( http://www.sigmachip.com/ )
SGL8023W is a single-channel touch chip for LED lightness regulation. This chip can control the on-off state of LED light and regulate its lightness on a continuous range, which could be used on incandescent and halogen. Wide range of adjustable LED brightness with easy operation. Touch function works through various materials, such as glass, acrylic, plastic, ceramics, and so on, with high reliability.
High voltage range, from 2.4V~5.5V.
Easy application circuits with fewer external components.
Good EMI (especially from cellphones) features. EFT meets 2KV;
works well even within short range of cellphone interferences.
TI touch input correspond to SO1 and SO2 as the light control output. SO2/OPT2 is a shared pin for both input and output，which can be used for brightness control as SO2, or an option input as OPT2. It offers 6 functions by assigning different combination of values to OPT1/OPT2/OPT3 as the following：
1）OPT1=1，OPT2=1，OPT3=1：No previous brightness memory, single output stepless LED light.
2）OPT1=1，OPT2=1，OPT3=0：With previous brightness memory, no brightness transition, single output stepless LED light.
3）OPT1=1，OPT2=0，OPT3=1：No previous brightness memory, no brightness transition, dual output stepless LED light.
4）OPT1=1，OPT2=0，OPT3=0：With previous brightness memory, no brightness transition, dual output stepless LED light.
5）OPT1=0，OPT2=0，OPT3=1：LED three step brightness control，medium->high->off.
6）OPT1=0，OPT2=0，OPT3=0：LED three step brightness control，medium->low->off.