TS5A22364: TS5A22364 power consumption at 3.3Vcc

Hello Thomas,

We can approximate what the power consumption would be from the datasheet.  Due to manufacturing tolerances there naturally will be some variability.  However, the upper limit should be bounded by the calculations presented below.  In section 6.6 of the datasheet, we are provided the electrical characteristics of the device operated off of a supply of 3V to 3.6V.  The last parameter is the current from our supply.  Admittedly the table posts a value with the supply at 3.6V, but if you look at section 6.5's Icc generated from a lower supply voltage, you can see that the max Icc only changes by .1uA (table 1).  So depending on whether you are passing a negative signal or a positive signal through Vcom, your max Icc consumption will be 3.4 or 1.3 uA.  To estimate the max power for this you simply multiply one of these values by 3.3V.

Table 1

Aside from the above stated power, you also will consume power through the channel formed with Vcom and NO or NC.  To calculate this, you need to use the voltage of the signal you intend to pass as well as the load resistance.  From this you can calculate the power consumed based off of table 2, the following figure, and the following formulas.

Table 2