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114 ICs

1-2-1 2-Phase Stepper Motor Unipolar Driver ICs ■ Absolute Maximum Ratings Parameter Symbol Ratings Unit SLA7042M SLA7044M Motor Supply Voltage V CC 46 V FET Drain-Source Voltage V DSS 100 V Control Supply Voltage V DD 7V Input Voltage V IN –0.5 to VDD +0.5 V Output Current I O 1.2 3.0 A Pow er Dissipation P D 4.5 (Without Heatsink) W Channel Temperature T ch +150 °C Storage Temperature T stg –40 to +150 °C ■ Electrical Characteristics Terminals DATA, CLOCK and STROBE 2W1-2 Phase Excitation/Micro-step SupportSLA7042M/SLA7044M Ratings Parameter Symbol SLA7042M SLA7044M Unit Control Supply Current IDD 77 mA Conditions VDD =5.5V V DD =5.5V Control Supply Voltage V DD 4.5 5 5.5 4.5 5 5.5 V VIH 3.5 5 3.5 5 Conditions VDD =5V V DD =5V VIL 0 1.5 0 1.5 V Conditions VDD =5V V DD =5V VH 11 V Conditions VDD =5V V DD =5V II ±1 ±1 µA Conditions VDD =5V, VI=0 or 5V V DD =5V, VI=0 or 5V VREF 0.4 2.5 0.4 2.5 Conditions VDD =5V V DD =5V VVDISABLE VDD –1 V DD VDD –1 V DD Conditions VDD =5V V DD =5V IREF ±1 ±1 µA Conditions VDD =5V, VI=0 or 5V V DD =5V, VI=0 or 5V Vref 00 Conditions MODE 0 MODE 0 Vref 20 20 Conditions MODE 1 MODE 1 Vref 40 40 Conditions MODE 2 MODE 2 Vref 55.5 55.5 Conditions MODE 3 MODE 3 %Vref 71.4 71.4 Conditions MODE 4 MODE 4 Vref 83 83 Conditions MODE 5 MODE 5 Vref 91 91 Conditions MODE 6 MODE 6 Vref 100 100 Conditions MODE 7 MODE 7 FET Drain-Source Voltage VDSS 100 100 V Conditions IDSS =4mA, VDD =5V I DSS =4mA, VDD =5V FET Drain Leakage Current IDSS 44 mA Conditions VDSS =100V, VDD =5V V DSS =100V, VDD =5V FET Diode Forward Voltage VSD 1.2 2.3 V Conditions ID =1.2A I D =3A TOFF 77 Conditions MODE 1, 2 MODE 1, 2 Chopper Off Time TOFF 99 µs Conditions MODE 3, 4, 5 MODE 3, 4, 5 TOFF 11 11 Conditions MODE 6, 7 MODE 6, 7 Tr 0.5 0.5 Conditions VDD =5V, ID =1A V DD =5V, ID =1A Switching Time Tstg 0.7 0.7 µs Conditions VDD =5V, ID =1A V DD =5V, ID =1A Tf 0.1 0.1 Conditions VDD =5V, ID =1A V DD =5V, ID =1A Data Setup Time “A” tsDAT 75 75 Conditions Data active time before clock ↓ Data active time before clock ↓ Data Hold Time “B” thDAT 75 75 Conditions Data active time before clock ↓ Data active time before clock ↓ Data Pulse Time “C ” twDAT 150 150 Conditions ns Clock Pulse Width “D ” twhCLK 100 100 Conditions Strobe Stability Time “E” tpsSTB 100 100 Conditions Time from clock ↓ to Strobe ↓ Time from clock ↓ to Strobe ↓ Strobe Pulse H Width “F” twhSTB 100 100 Conditions Step Reference Current Ratio Input Voltage Input Hysteresis Voltage Input Current Input Voltage Input Current REF Terminal DC Characteristics AC Characteristics

■ Internal Block Diagram ■ Diagram of Standard External Circuit ■ Output Current Formula K:Reference voltage setting ratio by serial signal (See the internal block diagram) VDD AV DD B OUT A OUT A OUT B OUT B REF A REF B GND A GND B RS A RS B 71 2 9 1 0 R S R S R 2 C 1 VREF R 1 ENABLE 41 5 1 8 1 1 1 8 CLOCK A CLOCK B STROBE A STROBE B DATA A DATA B VCC C 1 : 500~10000pF SLA7042M SLA7044M OUT A OUT A VDD A VDD B OUT B Rs B GND B Ref B Ref A GND A Rs A DATA B DATA A CLOCK B OUT B CLOCK A STROBE B STROBE A Enable COMP Phase Vref 20% 40% 55.5% 71.4% 83% 91% 100% a PWM Reset Ph. Reset Enable COMP Phase PWM Reset Reset Latch Reference voltage Reference voltage abc Ph. Shift register abc Ph. Latch abc Ph.abc Shift register b c c a b Vref 20% 40% 55.5% 71.4% 83% 91% 100% OFF time timer (TOFF 3-step switching) Chopper ON Noise filter (5 s)µ OFF time timer (TOFF 3-step switching) Chopper ON Noise filter (5 s)µ ■ Serial Data Pattern Phase a b c Phase a b c OUT excitation (MODE χ ) OUT excitation (MODE χ ) CLOCK STROBE MODE0 (0%) MODE1 (20%) MODE2 (40%) MODE3 (55.5%) MODE4 (71.4%) DATA MODE5 (83%) MODE6 (91%) MODE7 (100%) IO = ⋅K VREF 3 RS ■ External Dimensions (ZIP18 with Fin [SLA18Pin]) (Unit : mm) 31±0.2 24.4±0.2 16.4±0.2 3.2±0.15x3.8 1+0.2 –0.10.65+0.2 –0.1 31.3±0.2 123 1 8 1716 3.2±0.15 Part No. Lot No. 16±0.2 13±0.2 9.9±0.2 Forming No. No.871 4.8±0.2 1.7±0.1 2.45±0.2 R-End 4±0.7 0.55+0.2 –0.1 (3) 6.7±0.5 9.7+0.2 –0.1 1+0.2 –0.1 0.65+0.2 –0.1 7.5±0.6 6±0.6 2.2±0.1 0.55+0.2 –0.11.6±0.6 3±0.6 4.6±0.6 123 1 8 1716 Forming No. No.872 φ φ Successively output this serial data and set any current. Then, determine the step time of the reference voltage Vref with STROBE signal intervals. Product Mass : Approx.6g