Hİ,
DRV8806 datasheet dedicates that 2-A (Single Channel On)/1-A (All Channels On) Maximum (with adequate PCB heatsinking at 25°C). Drive Current per Channel (at 25°C).
Additionally I need to know changing of the output current with respect to changing of temperature. Have you got a specification or Typical Characteristics table that show output current t vs temperature?
Best regards,
Gamze GÜNAY