Datasheet TB9120AFTG (Toshiba) - 7

TB9120AFTG 7.2 Power supply
VBAT is a battery power supply pin. VccOUT is an output pin of an internal generated power 5V. This IC has a power supply monitoring function. VBAT low-voltage detection circuit Each output pin (OUTA +, OUTA-, OUTB +, and OUTB-) is turned off (high-impedance state) when VBAT voltage drops below the detection voltage 4.2V(typ.). It has 0.5V(typ.) hysteresis. Therefore, it recovers at 4.7V(typ.). VBAT VBATRSTH=4.7V (typ.) VBATRSTL=4.2V (typ.) VBATRSTHY=0.5V (typ.) Motor drive OFF(HiZ) ON OFF(HiZ) output Threshold of VBAT low-voltage detection VccOUT low-voltage detection circuit Each output pin (OUTA +, OUTA-, OUTB +, and OUTB-) is turned off (high-impedance state) and all control circuits including logic circuits are also reset when VccOUT output voltage drops below the detection voltage 3.8V(typ.). It has 0.2V(typ.) hysteresis. Therefore, it recovers at 4.0V(typ.). VccOUTRHH=4.0V (typ.) VccOUTRHL=3.8V (typ.) VccOUT Output VccOUTRHLHYS=0.2V (typ.) Each input control signal is reflected when VBAT voltage is less than VBAT low-voltage detection threshold 4.2V(typ.) and VccOUT voltage is more than POR threshold 3.8V(typ.). However, each output pin (OUTA +, OUTA-, OUTB +, and OUTB-) is kept in high-impedance state if VBAT voltage still stays less than VBAT low-voltage detection threshold 4.2V(typ.). 5.0V (typ.) VBAT power supply input 4.2V (typ.) GND . 5.0V (typ.) VccOUT output 3.8V (typ.) Motor drive output ON OFF（HiZ） Control circuit state Active state Timing charts may be simplified for explanatory purposes. © 2020 7 2020-05-12 Toshiba Electronic Devices & Storage Corporation