Ordering number : EN7441B STK672-060-E Thick-Film Hybrid IC STK672-060-E Features Can implement stepping motor drive systems simply by providing a DC power supply and a clock pulse generator. <Control Block Features> One of five drive types can be selected with the drive mode settings (M1, M2, and M3) 1) 2 phase excitation drive 2) 1-2 phase excitation drive 3) W1-2 phase excitation drive 4) 2W1-2 phase excitation drive 5) 4W1-2 phase excitation drive Provides four freely selectable modes for the vector locus during microstepping drive: circular mode, one inside mode, and two outside modes. Phase retention even if excitation is switched. The excitation phase state can be verified in real time using the MO1, MO2, and MOI signal output pins. The CLK input counter block can be selected to be one of the following by the high/low setting of the M3 input pin. 1) Rising edge only 2) Both rising and falling edges The CLK and RETURN input pins include built-in malfunction prevention circuits for external pulse noise. ENABLE and RESET pins provided. These are Schmitt trigger inputs with built-in 20k (typical) pull-up resistors. No noise generation due to the difference between the A and B phase time constants during motor hold since external excitation is used. Microstepping operation supported even for small motor currents, since the reference voltage Vref can be set to any value between 0V and 1/2V 2. CC <Driver Block> External excitation PWM drive allows a wide operating supply voltage range (V 1 = 10 to 45V) to be used. CC Current detection resistor (0.22) built-in the hybrid IC itself. Power MOSFETs adopted for low drive loss. Provides a motor output drive current of I = 1.2A. OH Specifications Absolute Maximum Ratings at Ta = 25C Parameter Symbol Conditions Ratings Unit Maximum supply voltage 1 V 1 max No signal 52 V CC Maximum supply voltage 2 V 2 max No signal -0.3 to +7.0 V CC Input voltage V max Logic input pins -0.3 to +7.0 V IN 0.5s, 1 pulse, when V 1 applied Output current I max 1.6 A CC OH Repeated avalanche capacity Ear max 25 mJ Allowable power dissipation Pd max c-a = 0 7 W Operating substrate temperature Tc max 105 C Junction temperature Tj max 150 C Storage temperature Tstg -40 to +125 C Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Allowable Operating Ranges at Ta = 25C Parameter Symbol Conditions Ratings Unit Supply voltage 1 V1 With signals applied 10 to 45 V CC Supply voltage 2 V2 With signals applied 5 5% V CC Input voltage V 0 to V2V IH CC Phase driver withstand voltage V Tr1, 2, 3, and 4 (the A, A, B, and B outputs) 100 (min) V DSS Output current I Duty 50% 1.2 A OH No.7441-2/19