1-2-1 2-Phase Stepper Motor Unipolar Driver ICs SLA7042M/SLA7044M 2W1-2 Phase Excitation/Micro-step Support ■Absolute Maximum Ratings Parameter Ratings Symbol SLA7042M Unit SLA7044M Motor Supply Voltage VCC 46 V FET Drain-Source Voltage VDSS 100 V Control Supply Voltage VDD 7 V Input Voltage VIN –0.5 to VDD+0.5 Output Current IO V 1.2 3.0 A Power Dissipation PD 4.5 (Without Heatsink) W Channel Temperature Tch +150 °C Storage Temperature Tstg –40 to +150 °C ■Electrical Characteristics Ratings Parameter Symbol min. Control Supply Current Control Supply Voltage Terminals DATA, CLOCK and STROBE Input Voltage Input Hysteresis Voltage Input Current REF Terminal Input Voltage DC Characteristics Input Current Step Reference Current Ratio FET ON Voltage FET Drain-Source Voltage FET Drain Leakage Current FET Diode Forward Voltage AC Characteristics Chopper Off Time Switching Time Data Setup Time “A” Data Hold Time “B” Data Pulse Time “C” Clock Pulse Width “D” Strobe Stability Time “E” Strobe Pulse H Width “F” 114 ICs IDD Conditions VDD VIH Conditions VIL Conditions VH Conditions II Conditions VREF Conditions VDISABLE Conditions IREF Conditions Vref Conditions Vref Conditions Vref Conditions Vref Conditions Vref Conditions Vref Conditions Vref Conditions Vref Conditions VDS Conditions VDSS Conditions IDSS Conditions VSD Conditions TOFF Conditions TOFF Conditions TOFF Conditions Tr Conditions Tstg Conditions Tf Conditions tsDAT Conditions thDAT Conditions twDAT Conditions twhCLK Conditions tpsSTB Conditions twhSTB Conditions 4.5 3.5 SLA7042M typ. VDD=5.5V 5 max. 7 min. 5.5 5 4.5 3.5 1.5 0 VDD=5V 0 SLA7044M typ. VDD=5.5V 5 1.5 VDD=5V 1 VDD=5V ±1 VDD=5V, VI=0 or 5V 2.5 0.4 VDD VDD–1 VDD=5V VDD ±1 ±1 VDD=5V, VI=0 or 5V 0 MODE 0 20 MODE 1 40 MODE 2 55.5 MODE 3 71.4 MODE 4 83 MODE 5 91 MODE 6 100 MODE 7 0.8 µA V ID=3.0A, VDD=4.75V 100 100 IDSS=4mA, VDD=5V 4 VDSS=100V, VDD=5V VDSS=100V, VDD=5V 1.2 2.3 ID=1.2A 7 MODE 1, 2 9 MODE 3, 4, 5 11 MODE 6, 7 0.5 VDD=5V, ID=1A 0.7 VDD=5V, ID=1A 0.1 VDD=5V, ID=1A ID=3A 7 MODE 1, 2 9 MODE 3, 4, 5 11 MODE 6, 7 0.5 VDD=5V, ID=1A 0.7 VDD=5V, ID=1A 0.1 VDD=5V, ID=1A V V IDSS=4mA, VDD=5V 4 µA % 1.4 ID=1.2A, VDD=4.75V mA V µs µs 75 Data active time before clock ↓ 75 Data active time before clock ↓ 75 Data active time before clock ↓ Data active time before clock ↓ 150 150 100 100 100 ns 100 Time from clock ↓ to Strobe ↓ 100 V VDD=5V VDD=5V, VI=0 or 5V 0 MODE 0 20 MODE 1 40 MODE 2 55.5 MODE 3 71.4 MODE 4 83 MODE 5 91 MODE 6 100 MODE 7 75 V 2.5 VDD=5V VDD=5V mA V ±1 VDD=5V, VI=0 or 5V VDD–1 5.5 5 VDD=5V VDD=5V 1 VDD=5V 0.4 Unit max. 7 Time from clock ↓ to Strobe ↓ 100 SLA7042M/SLA7044M ■Internal Block Diagram ■Serial Data Pattern OUT B OUT B VDD B VDD A OUT A OUT A OUT excitation (MODE χ ) Phase CLOCK STROBE Reference voltage c b Vref a 0 0 0% 0 0 0 20% 1 0 1 40% 0 0 1 1 55.5% 1 0 0 71.4% 1 0 1 83% 1 1 0 91% 1 1 1 100% OFF time timer (TOFF 3-step switching) Reference voltage Vref b a c 0% 0 0 0 20% 0 1 0 40% 1 0 0 55.5% 1 1 0 71.4% 0 0 1 0 83% 1 1 1 91% 0 1 1 100% 1 1 COMP PWM Latch Ph. Reset a b c Shift register Ph. a b b c b 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 a b c Ph. a a MODE3 (55.5%) Reset Shift register c COMP Reset Latch c Phase MODE2 (40%) Phase Reset OUT excitation (MODE χ ) c MODE1 (20%) OFF time timer (TOFF 3-step switching) Chopper ON Noise filter (5µs) Phase b MODE0 (0%) Chopper ON Noise filter (5µs) PWM a Ph. DATA Enable Enable MODE4 (71.4%) Rs B GND B Ref B DATA B CLOCK B STROBE B DATA A STROBE A Ref A GND A Rs A CLOCK A MODE5 (83%) MODE6 (91%) MODE7 (100%) Successively output this serial data and set any current. Then, determine the step time of the reference voltage Vref with STROBE signal intervals. ■Output Current Formula ■Diagram of Standard External Circuit VCC IO= ⋅ K VREF K:Reference voltage setting ratio by 3 RS serial signal (See the internal block diagram) 5V 4 VDDA R1 15 1 8 11 18 VDDB OUT A OUT A OUT B OUT B CLOCK A 5 ENABLE VREF CLOCK B REF A 3 REF B 14 SLA7042M SLA7044M 16 STROBE A STROBE B 2 13 DATA A R2 6 DATA B 17 RS B 10 C1 GND A GND B 7 12 RS A 9 RS RS C1 : 500~10000pF ■External Dimensions (ZIP18 with Fin [SLA18Pin]) Part No. Lot No. 2.45±0.2 17xP1.68±0.4=28.56±1 +0.2 0.55 –0.1 4±0.7 +0.2 1 –0.1 17xP1.68±0.4=28.56±1 2.2±0.1 6±0.6 7.5±0.6 ±0.6 +0.2 0.65 –0.1 1.6 9.7 –0.1 R-End +0.2 1 –0.1 +0.2 0.65 –0.1 +0.2 1.7±0.1 3 ±0.6 ±0.6 4.6 4.8±0.2 (3) 6.7±0.5 9.9±0.2 13±0.2 16±0.2 φ 3.2±0.15x3.8 16.4±0.2 0.55 +0.2 –0.1 31±0.2 24.4±0.2 φ 3.2±0.15 (Unit : mm) 31.3±0.2 1 2 3 . . . . . . . . . . . . 16 17 18 1 2 3 Forming No. No.871 . . . . . . . . . . . 16 1718 Forming No. No.872 Product Mass : Approx.6g ICs 115