Ordering number : ENA0438F LV8044LP Bi-CMOS IC LV8044LP Recommended Operating Conditions at Ta = 25C Parameter Symbol Conditions Ratings Unit Power supply voltage range 1 V 2.7 to 5.5 V M Power supply voltage range 2 V 2.7 to 5.5 V CC Logic input voltage range V 0 to V +0.3 V IN CC STEP frequency F STEP1, STEP2 to 64 KHz STEP PWM frequency F STEP3, STEP4 to 100 KHz PWM Electrical Characteristics at Ta 25 C, V = 5V, V = 3.3V M CC Ratings Parameter Symbol Conditions Unit min typ max Standby supply current I ST = L 1.0 A STN Motor supply current I ST = H, PWM3 = PWM4 = H, 50 100 A M IN51 = IN61 = H, no load Logic supply current I ST = H, PWM3 = PWM4 = H, 23 4mA CC IN51 = IN61 = H, no load V low-voltage cut voltage V V 2.1 2.35 2.6 V CC th CC Low-voltage hysteresis voltage VHIS 100 150 200 mV th Thermal shutdown temperature TSD Design guarantee 150 180 200 C Thermal hysteresis width TSD Design guarantee 40 C Microstep Driver (channels 1, 2, 3, and 4) Output on resistance Ronu I = 400mA, Upper ON resistance 0.7 0.8 O Rond I = 400mA, Lower ON resistance 0.5 0.6 O Output leak current Ileak1 1.0 A O Diode forward voltage 1 V1 ID = -400mA 0.9 1.2 V D Logic pin input current IL V = 0V (ST, STEP1, STEP2) 1.0 A in IN IH V = 3.3V (ST, STEP1, STEP2) 20 33 50 A in IN Logic input H level voltage V h ST, STEP1, STEP2 2.5 V in Logic input L level voltage V l ST, STEP1, STEP2 1.0 V in Current 4W1-2 phase Vstep16 Step 16 0.185 0.200 0.215 V selection (Initial level: the channel 1 comparator level) reference Vstep15 Step 15 (Initial+1) 0.1850.200 0.215V voltage level Vstep14 Step 14 (Initial+2) 0.1850.200 0.215V Vstep13 Step 13 (Initial+3) 0.1760.193 0.206V Vstep12 Step 12 (Initial+4) 0.1700.186 0.200V Vstep11 Step 11 (Initial+5) 0.1620.178 0.192V Vstep10 Step 10 (Initial+6) 0.1540.171 0.184V Vstep9 Step 9 (Initial+7) 0.1460.163 0.176V Vstep8 Step 8 (Initial+8) 0.1290.148 0.159V Vstep7 Step 7 (Initial+9) 0.1130.131 0.143V Vstep6 Step 6 (Initial+10) 0.0970.115 0.127V Vstep5 Step 5 (Initial+11) 0.0790.097 0.109V Vstep4 Step 4 (Initial+12) 0.0620.079 0.092V Vstep3 Step 3 (Initial+13) 0.0440.06 0.074V Vstep2 Step 2 (Initial+14) 0.0240.04 0.054V Vstep1 Step 1 (Initial+15) 0.0060.02 0.036V 1-2 phase Vstep16 Step 16 0.185 0.200 0.215 V (Initial level: the channel 1 comparator level) Vstep8 Step 8 (Initial+1) 0.1290.148 0.159V 1-2 phase Vstep16 Step 16 0.185 0.200 0.215 V (Full torque) (Initial level: the channel 1 comparator level) Vstep8 Step 8 (Initial+1) 0.1850.200 0.215V 2 phase Vstep8 Step 8 0.185 0.200 0.215 V Continued on next page. No.A0438-2/26