Ordering number : ENA2019 LV8747TA Bi-CMOS LSI PWM Constant-Current Control Stepping Motor LV8747TA Allowable Operating Ratings at Ta = 25C Parameter Symbol Conditions Ratings Unit Supply voltage VM 10 to 35 V Logic input voltage V 0 to 5 V IN VREF input voltage VREF 0 to 3 V Regulator output voltage V VM-5 to VM V O Regulator output current I 0 to 200 mA O Error amplifier input voltage VA 0 to 3 V O Timing capacity CT 100 to 15000 pF Timing resistance RT 5 to 50 k Triangular wave oscillation F 10 to 800 kHz OSC frequency Electrical Characteristics at Ta = 25C, VM = 24V, VREF = 1.5V Ratings Parameter Symbol Conditions Unit min typ max General VM current drain IM PS = H, no load 6 8 mA Thermal shutdown temperature TSD Design guarantee 180 C Thermal hysteresis width TSD Design guarantee 40 C REG5 output voltage Vreg5 Ireg5 = -1mA 4.5 5.0 5.5 V Motor Drivers Charge pump block Boost voltage VGH VM = 24V 28.0 28.7 29.8 V Rise time tONG VG = 10F 50 100ms Oscillation frequency Fcp CHOP = 20k 90120 150kHz Output block (OUT1/OUT2) Output on resistance RonU1 I = -1.5A, source side 0.5 0.8 O RonD2 I = 1.5A, sink side 0.5 0.8 O Output leak current Ileak1 V = 35V 50 A O O Diode forward voltage VD1 ID = -1.5A 1.0 1.3 V Output block (OUT3/OUT4) Output on resistance RonU2 I = -500mA, source side 1.5 1.8 O RonD2 I = 500mA, sink side 1.1 1.4 O Output leak current Ileak2 V = 35V 50 A O O Diode forward voltage VD2 ID = -500mA 1.0 1.3 V Logic input block Logic pin input current IL V = 0.8V 3 8 15 A IN IN IH V = 5V 30 50 70 A IN IN Logic high-level input voltage VH 2.0 V IN Logic low-level input voltage VL 0.8 V IN Current control block VREF input current IREF VREF = 1.5V -0.5 A Chopping frequency Fchop CHOP = 20k 4562.5 75kHz Threshold voltage of current setting VHH VREF = 1.5V, I0 = H, I1 = H 0.291 0.300 0.309 V comparator VLH VREF = 1.5V, I0 = L, I1 = H 0.191 0.200 0.209 V VHL VREF = 1.5V, I0 = H, I1 = L 0.093 0.100 0.107 V Output short-circuit protection circuit Charge current IOCP VOCP = 0V 15 20 25 A Threshold voltage VthOCP 0.8 1.0 1.2 V Switching regulator Controller Reference voltage block REG25 output voltage Vreg25 Ireg25 = -1mA 2.475 2.500 2.525 V Input stability V I VM = 10 to 35V 10 mV DL Load stability V O Ireg25 = 0 to -3mA 10 mV DL Internal regulator block REGVM5 output voltage VregVM5 VregVM5 = 1mA VM-6.0 VM-5.0 V Continued on next page. No.A2019-2/20