TB67S149HG Toshiba BiCD Process Integrated Circuit Silicon Monolithic TB67S149HG Clock controlled Unipolar stepping motor driver HG The TB67S149 is a Clock controlled PWM chopping type 2 phase unipolar stepping motor driver. Using the BiCD process, the TB67 S149HG can be operated with VM voltage of 45V, output voltage of 84V, and output current of 3.0A at max (absolute maximum ratings). Features HZIP25-P-1.00F BiCD processed monolithic integrated circuit. Weight 7.6(g) typ. Capable of operating one unipolar stepping motor. PWM controlled constant current drive. Full, half(a), half(b), quarter, 1/8, 1/16, 1/32 step resolution. Low on resistance(0.25(typ.) output MOSFET. High voltage and current (For specification, please refer to the absolute maximum ratings and operation ranges). Standby (low power) mode function Error detect feedback signal output function (Over current/Thermal shutdown). Error detect function (Thermal shutdown(TSD), Over current(ISD), and Low voltage(POR). Built-in VCC regulator for internal circuit use. Fixed off time can be adjusted by external components. Note) Please be careful about the thermal conditions during use. 1 2014-04-15 TB67S149HG Pin assign (TB67S149HG) (Top View) 12 2 4 6 8 10 14 16 18 20 22 24 1 3 5 7 9 11 13 15 17 19 21 23 25 2 2014-04-15 NC VCC VREF OSCM ERR ALM MO DMODE0 DMODE1 DMODE2 RESET CLK ENABLE CW/CCW GND NC OUTA+ RSGNDA OUTA- VCOM OUTB- RSGNDB OUTB+ GND VM