Ordering number : ENA2277A STK672-642AN-E Thick-Film Hybrid IC 2-phase Stepper Motor Driver STK672-642AN-E Allowable Operating Ranges at Tc=25C Parameter Symbol Conditions Ratings unit Operating supply voltage 1 V With signals applied 0 to 42 V CC Operating supply voltage 2 V With signals applied 55% V DD Input high voltage V Pins 10, 12, 13, 14, 15, 17, V =55% 2.5 to V V IH DD DD Input low voltage V Pins 10, 12, 13, 14, 15, 17, V =55% 0 to 0.8 V IL DD Tc=105C, CLOCK200Hz, Output current 1 I 1 3.0 A OH Continuous operation, duty=100% Tc=80 C, CLOCK200Hz, Output current 2 I 2 Continuous operation, duty=100%, 3.3 A OH See the motor current (I ) derating curve OH CLOCK frequency f Minimum pulse width: at least 10s 0 to 50 kHz CL Recommended operating Tc No condensation 0 to 105 C substrate temperature Recommended Vref range Vref Tc=105C 0.14 to 1.31 V Electrical Characteristics at Tc=25C, V =24V, V =5.0V *1 CC DD Parameter Symbol Conditions min typ max unit V supply current I V =5.0V, ENABLE=Low 4.4 8.0 mA DD CCO DD Output average current *2 Ioave R/L=1/0.62mH in each phase 0.519 0.625 0.731A FET diode forward voltage Vdf If=1A (R =23) 0.83 1.5V L Output saturation voltage Vsat R =23 0.20 0.33V L Input high voltage V Pins 10, 12, 13, 14, 15, 17 2.5 V V IH DD Input low voltage V Pins 10, 12, 13, 14, 15, 17 0.3 0.8 V Control IL Input pin 5V level input current Pins 10, 12, 13, 14, 15, 17=5V I 50 75 A ILH GND level input current Pins 10, 12, 13, 14, 15, 17=GND I 10 A ILL Output low voltage V Pin 16 (I=5mA) 0.25 0.5V FAULT OLF O pin 5V level leakage current Pin 16 =5V I 10 A ILF Vref input bias current I Pin 19 =1.0V 10 15 A IB PWM frequency fc 29 45 61 kHz Overheat detection temperature TSD Design guarantee 144 C Drain-source cut-off current I V =100V, Pins 2, 6, 9, 18=GND 1 A DSS DS Notes *1 : A fixed-voltage power supply must be used. *2 : The value for Ioave assumes that the lead frame of the product is soldered to the mounting circuit board. No.A2277-2/28