Ordering number : ENA2248A STK672-440BN-E Thick-Film Hybrid IC 2-phase Stepper Motor Driver STK672-440BN-E Allowable Operating Ranges at Tc=25C Parameter Symbol Conditions Ratings unit Operating supply voltage 1 V With signals applied 0 to 46 V CC Operating supply voltage 2 V With signals applied 55% V DD Input high voltage V Pins 10, 11, 12, 13, 14, 15, 17, V =55% 2.5 to V V IH DD DD Input low voltage V Pins 10, 11, 12, 13, 14, 15, 17, V =55% 0 to 0.8 V IL DD CLOCK frequency f Minimum pulse width: at least 10s 0 to 50 kHz CL Output current I Tc=105C, CLOCK200Hz 3.0A OH Recommended operating Tc No condensation 0 to 105 C substrate temperature Recommended Vref range Vref Tc=105C 0.2 to 1.8V 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 7.2 8.5 mA DD CCO DD Output average current *2 Ioave R/L=1/0.62mH in each phase 0.27 0.32 0.37A FET diode forward voltage Vdf If=1A (R =23) 1 1.6V L Output saturation voltage Vsat R =23 0.25 0.38V L Input voltage V Pins 10, 11, 12, 13, 14, 15, 17 2.5 V V IH DD V Pins 10, 11, 12, 13, 14, 15, 17 0.3 0.8 V Control IL input pin 5V level input current I Pins 10, 11, 12, 13, 14, 15, 17=5V 50 75 A ILH GND level input current Pins 10, 11, 12, 13, 14, 15, 17=GND I 10 A ILL Vref input bias current I Pin 19 =1.0V 1 A IB FAULT1 Output low voltage V Pin 16 (I=5mA) 0.25 0.5V OLF O pin 5V level leakage current I Pin 16 =5V 10 A ILF Motor terminal open detection V 1 0.0 0.01 0.2 OF output voltage FAULT2 Overcurrent detection output Pin 8 (when all protection functions have V2 2.4 2.5 2.6 V OF pin voltage been activated) Overheat detection output V3 3.1 3.3 3.5 OF voltage Overheat detection temperature TSD Design guarantee 144 C PWM frequency fc 41 48 55 kHz Drain-source cut-off current I V =100V, Pins 2, 6, 9, 18=GND 1 A DSS DS 4W1-2 2W1-2 W1-2 1-2 =15/16, 16/16 100 4W1-2 2W1-2 =14/16 97 4W1-2 =13/16 95 4W1-2 2W1-2 W1-2 =12/16 93 4W1-2 =11/16 87 4W1-2 2W1-2 =10/16 83 4W1-2 =9/16 77 4W1-2 2W1-2 W1-2 1-2 =8/16 71 Vref % *3 4W1-2 =7/16 64 4W1-2 2W1-2 =6/16 55 4W1-2 =5/16 47 4W1-2 2W1-2 W1-2 =4/16 40 4W1-2 =3/16 30 4W1-2 2W1-2 =2/16 20 4W1-2 =1/16 11 2 100 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. *3: The values given for Vref are design targets, no measurement is performed. No.A2248-2/28 AB Chopper Current Ratio