Hi,
DRV8908-Q1 has 8ch half bridge and each channel can drive 1Arms. With parallels mode of 2ch combined, can drive 2Arms. Therefore 2pcs of DRV8908 can support 2A(by 2ch) x 8 low side drivers.
Other families are DRV8912(12ch), DRV8910(10ch).DRV8906…