TB67H450 2CH DC Brushed Motor Drive Board

https://toshiba.semicon-storage.com/ap-en/semiconductor/product/motor-driver-ics/brushed-dc-motor-driver-ics/detail.TB67H450FNG.html

VREF

  • on board RS == 0.15R

  • I_LIMIT ≈ VREF / (3 × RS)

  • if Vref = 5V, I_LIMIT = 5 / (3 * 0.15) = 11.11A (theoretically), but max current capability of this chip is 3.5A

  • if Vref = 1.5V, I_LIMIT = 1.5 / (3 * 0.15) = 3.33A (preferable setup )

  • if Vref = 1V, I_LIMIT = 1 / (3 * 0.15) = 2.22A

ref