LED SM1628B as with a keyboard scan interface (light emitting diode display) The drive control professionals Circuit, the internal MCU integrated digital interface, data latches, LED high voltage driver, keyboard scanning And other circuits. This product is excellent and reliable quality. Mainly used in VCR, VCD, DVD and home Theater products such as display drivers. Use package SOP28 of. SM1628 SM1628B is an upgraded version of the chip adds a lot of static and interference protection circuit Structure. SM1628B anti-static and anti-power interference ability stronger, has better compatibility, Reliability and stability.