TB67S249FTG Toshiba BiCD process integrated circuit silicon monolithic TB67S249FTG Active Gain Control Clock-in control Bipolar stepping motor driver The TB67S249FTG is a clock-in controlled bipolar stepping motor driver with a built-in Active Gain Control architecture. The TB67S249FTG also has an internal current feedback control (ACDS) which enables the driver to control the motor current without using a sense resistor. Using the BiCD process, the TB67S249FTG is rated at 50 V, 4.5 A. P-VQFN48-0707-0.50-004 Weight 0.14 g (typ.) Features Built-in Anti-stall architecture (AGC: Active Gain Control) Built-in sense resistor less current control architecture (ACDS: Advanced Current Detection System) Low Rds (on) MOSFET (High side+ Low side=0.33 (typ.)) Built-in micro stepping control. (Full, Half (a), Half (b), Quarter, 1/8, 1/16, 1/32 step resolution) Multi error detect functions (Thermal shutdown (TSD), Over current protection (ISD), Power-on-reset (POR), Motor load open (OPD)) Error detection status output (Error Output) Internal VCC (5 V) regulator enables the driver to operate with a single power supply (VM). Adjustable constant current PWM frequency using external components Small package with thermal pad on back side (QFN48: 7.0 mm x 7.0 mm) Note: Please consider the heat condition when using the TB67S249FTG. 2017-2021 2021-02-01 1 Toshiba Electronic Devices & Storage Corporation TB67S249FTG Pin assignment (Top View) 34 33 32 31 30 29 28 27 26 25 36 35 24 OUTB+ NC 37 23 OUTB+ NC 38 22 RSBGND DMODE0 39 21 RSBGND DMODE1 40 20 OUTB- DMODE2 41 19 OUTB- CW/CCW 42 TB67S249FTG CLK 18 OUTA- 43 ENABLE 17 OUTA- 44 RESET 16 RSAGND 45 MO 15 RSAGND 46 LO1 14 OUTA+ 47 13 OUTA+ LO2 48 1 2 3 4 5 6 7 8 9 10 11 12 Note: Please solder the corner pad and the rear thermal pad of the QFN package, to the GND pattern of the PCB. 2021-02-01 2 AGC0 NC AGC1 OSCM CLIM0 VCC CLIM1 VCC FLIM VREFA VREFB BOOST LTH GND GND GND NC NC VMA VMB VMA VMB NC NC