1-2-1 2-Phase Stepper Motor Unipolar Driver ICs SLA7075MR, MPR, MPRT/7076MR, MPR, MPRT/7077MR, MPR, MPRT/7078MR, MPR, MPRT 2-Phase to 4W 1-2 Phase Excitation Support, Built-in Sequencer ■Features ■Absolute Maximum Ratings • Lineup of built-in current sense resistor and built-in protection circuit-type • Power supply voltages, VBB: 46 V (max), 10 to 44 V normal operating range • Logic supply voltages, VDD: 3.0 to 5.5 V Parameter Symbol Ratings Unit Motor Supply Voltage VM VBB VDD Io VIN VREF VRS 46 46 6 *1 V V V A V V V Driver Supply Voltage Logic Supply Voltage Output Current • Maximum output currents: 1 A, 1.5 A, 2 A, and 3A Logic Input Voltage • Clock input method (built-in sequencer) Sense Voltage • Self-excitation PWM current control with fixed off-time Power Dissipation • Synchronous PWM chopping function prevents motor noise in Hold mode Junction Temperature • Sleep mode for reducing the IC input current in stand-by state Storage Temperature REF Input Voltage Operating Ambient Temperature • ZIP type 23-pin molded package (SLA package) –0.3 to VDD+0.3 –0.3 to VDD+0.3 ±2 4.7 17 +150 PD Tj Ta Tstg –20 to +85 –30 to +150 Remarks Vref=0.4V, Mode F Excluding tw<1µs When Ta = 25°C W When Tc = 25°C °C °C °C *1: Output current value may be limited for the SLA7075MR, MPR, MPRT (1.0 A), SLA7076MR, MPR, MPRT (1.5 A), SLA7077MR, MPR, MPRT (2.0 A), and SA7078MR, MPR, MPRT (3.0 A), depending on the duty ratio, ambient temperature, and heating conditions. Do not exceed junction temperature of Tj under any circumstances. ■Recommended Operating Conditions Parameter Rating Symbol Motor Supply Voltage min. max. VM Unit 44 V V Remarks Driver Supply Voltage VS 10 44 Logic Supply Voltage VDD 3.0 5.5 V The VCC surge voltage should be 0.5 V or lower Case Temperature TC 90 °C Temperature at Pin-12 Lead (without heatsink) ■Electrical Characteristics Parameter Main Supply Current Logic Supply Current Output MOSFET Breakdown Voltage Output MOSFET ON Resistance Output MOSFET Diode Forward Voltage Maximum Clock Frequency Logic Input Voltage Logic Input Current REF Input Voltage REF Input Current SENSE Sense Voltage Sleep-Enable Recovery Time Switching Time Sense Resistance Symbol V(BR)DSS VREF VREFS IREF VSENSE TSE tcon tcoff RS Vocp Iocp Logic Output Current Step Reference Current Ratio PWM Minimum ON Time PWM OFF Time 102 ICs 100 0.7 0.45 0.25 0.18 0.85 1.0 0.95 0.95 VF Fclock VIL VIH IIL IIH Tstd VLOL VLOH ILOL ILOH ModeF ModeE ModeD ModeC ModeB ModeA Mode9 Mode8 Mode7 Mode6 Mode5 Mode4 Mode3 Mode2 Mode1 ton(min) toff1 toff2 toff3 max. 15 100 5 RDS(ON) Overcurrent Sense Current Logic Output Voltage Ratings typ. IBB IBBS IDD Overcurrent Sense Voltage Thermal Protection Temperature min. 0.85 0.6 0.4 0.24 1.1 1.25 1.2 2.1 250 ±1 ±1 0.04 0.04 0.04 0.04 2 Ω V 0.3 0.45 0.4 0.45 VDD ±10 VREF 2.0 1.5 0.305 0.305 0.205 0.155 0.7 2.3 3.5 4.6 140 0.314 0.314 0.211 0.160 0.75 V Ω V A °C 1.25 1.25 100 98.1 95.7 92.4 88.2 83.1 77.3 70.7 63.4 55.5 47.1 38.2 29.0 19.5 9.8 1.7 12 9 7 VBB=44V, ID=1mA SLA7075M, ID=1.0A SLA7076M, ID=1.5A SLA7077M, ID=2.0A SLA7078M, ID=3.0A SLA7075M, ID=1.0A SLA7076M, ID=1.5A SLA7077M, ID=2.0A SLA7078M, ID=3.0A When Clock Duty = 50% V µA V µS µS µS VDD–1.25 –1.25 In operation Sleep 1 and Sleep 2 modes µA 100 0.296 0.296 0.199 0.150 0.65 mA µA mA V kHz 0.25VDD 0.75VDD Conditions Unit V SLA7075M, within the SLA7076M, within the SLA7077M, within the SLA7078M, within the Output (OFF) Sleep 1 specified specified specified specified current current current current limit limit limit limit When step reference current ratio is 100% Sleep1&Sleep2 Clock → Out ON Clock → Out OFF SLA7075M, tolerance of ±3% SLA7076M, tolerance of ±3% SLA7077M, tolerance of ±3% SLA7078M, tolerance of ±3% SLA707xMPR, MPRT, when motor coil shorts out SLA7075MPR, MPRT/7076MPR, MPRT SLA7077MPR, MPRT SLA7078MPR, MPRT SLA707xMPRT, Rear of case (at the saturation temperature) SLA707xMPR, MPRT, IFlagL=1.25mA SLA707xMPR, MPRT, IFlagH=-1.25mA mA SLA707xMPR, MPRT % % % % % % % % % % % % % % % µS µS µS µS Mode 8 to F Mode 4 to 7 Mode 1 to 3 SLA7075MR, MPR, MPRT/7076MR, MPR, MPRT/7077MR, MPR, MPRT/7078MR, MPR, MPRT ■Internal Block Diagram ■Pin Assignment Pin No. OutB PreDriver Sequencer & Sleep Circuit Protect Protect DAC DAC PWM Control PWM Control OSC 19 – Synchro Control + + – RS 20 21 22 23 Reg PreDriver SenseA OutB 11 OutB 9 16 10 15 MIC 5 OutB VBB Clock Reset 8 M3 7 CW/CCW 6 M2 18 M1 15 MO 14 Flag 4 Ref/Sleep1 VDD 3 OutA 2 OutA OutA OutA 1 RS OSC 17 SenseB 12 Sync Gnd The protect circuit is deleted and the flag pin is N.C. for SLA7075MR, 7076MR, 7077MR, and 7078MR. ■Typical Connection Diagram 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Symbol Function OutA Phase A output OutA/ Phase A output Phase A current sense SenseA 2 phase excitation state output monitor output MO M1 Excitation mode/Sleep 2 setting input M2 M3 Step Clock input Clock VBB Driver supply (motor supply) Gnd Device GND Control current mode/Sleep 1 setting input Ref/Sleep1 Logic supply VDD Internal logic reset input Reset Normal/reverse control input CW/CCW Sync PWM control signal input Flag*1 Protection circuit monitor output*1 SenseB Phase B current sense OutB/ Phase B current output OutB Phase B current output *1: N.C. pin for SLA7075MR, 7076MR, 7077MR, and 7078MR. ■External Dimensions (ZIP23 with Fin [SLA23Pin]) Vs=10V to 44V 31±0.2 24.4±0.2 4.8±0.2 φ 3.2±0.15 × 3.8 16.4±0.2 1.7±0.1 Gate burr + OutB OutB φ 3.2±0.15 + Reset Clock M1 M2 M3 SLA7070M Series (2-phase/4 W1-2 phase excitation) 4–(R1) +1 CW/CCW Microcomputer, etc. 2.45±0.2 (Measured at the root) 9.5 –0.5 CB 9.9±0.2 Q1 5±0.5 BB 12.9±0.2 r1 OutA OutA C1 VDD 16±0.2 CA Vcc=3.0V to 5.5V R-end Sync MO +0.2 0.65 –0.1 Ref/Sleep1 SenseA r2 r3 Gnd 22P × 1.27±0.5=27.94±1 SenseB 31.3±0.2 (Including the resin burr) C2 +0.2 0.55 –0.1 (4.3) Flag ±0.7 4.5 (Measured at the tip) One-point Gnd Logic Gnd Power Gnd Forming No. No.2151 Product Mass : Approx.6g * There is no Flag pin (pin 18) for SLA7075MR, 7076MR, 7077MR, and 7078MR. 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