What type of circuitry/driver is present in the lights that change color on being turned on/off ?

I have a LED tube light which cycles through 3 modes (i.e. color 1, color 2, both color). Its circuit utilities only one chip (i.e. 9934A 7101H8, SO-8 package, there is Si written on it) for the above effect.

I was unable to get the datasheet of the IC.

The IC seems to be connected in the following way:


simulate this circuit – Schematic created using CircuitLab

  • 2
    \$\begingroup\$ It's a Dual P-Channel MOSFET. There ought to be other circuitry controlling it. \$\endgroup\$ – Unimportant Feb 15 '19 at 11:44
  • \$\begingroup\$ @Unimportant, In all the cases there is a constant voltage across the IC and if there was other circuitry (for this effect), it must have produced some change. \$\endgroup\$ – Electric_90 Feb 15 '19 at 12:10

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