TC78B041FNG/TC78B042FTG I/O Equivalent circuits The equivalent circuit diagrams may be simplified or some parts of them may be omitted for explanatory purposes. Pin description Pin symbol I/O signal I/O internal circuit VREF VREF VREF V REF HUP HUM HVP Digital filter 18/fosc = 2 μs (typ.) Hall signal input HVM HWP HWM VREF Speed control voltage Analog voltage input Ω VSP input Input range: 0 V to 10 V 150 k VREF VREF Connecting to resistor for setting internal Internal oscillation oscillation frequency OSCR frequency setting 1.2 V When R = 22 kΩ, fosc = 9.22 MHz (typ.) VREF VREF UH VH Commutation signal WH output UL Push-pull output (± 2 mA (max)) VL Rotation pulse output WL FG VCC 5V-reference voltage output VREF VREF: 5 V (typ.) (35 mA (max)) VREF 5V-reference voltage VREF2 VREF2: 5 V (typ.) (3 mA (max)) output 2 (Note) VREF2 7 2018-11-27