SLA707XM

2-Phase Unipolar Stepper Motor Driver SLA707xM Series ■General Description Combining low-power CMOS logic with high-current, high-voltage power FET outputs, the Series SLA707xM translator/drivers provide complete control and drive for a two-phase unipolar stepper motor with internal fixed off time and pulse-width modulation (PWM) control of the output current in a power multi-chip module (PMCM™). There are no phase-sequence tables, high-frequency control lines, or complex interfaces to program. The CMOS logic section provides the sequencing logic, direction, control, synchronous/asynchronous PWM operation, and a "sleep" function. The minimum CLOCK input is an ideal fit for applications where a complex µP is unavailable or overburdened. TTL or LSTTL may require the use of appropriate pull-up resistors to ensure a proper input-logic high. For PWM current control, the maximum output current is determined by the user's selection of a reference voltage and sensing resistor. The NMOS outputs are capable of sinking up to 1, 1.5, 2, or 3 A (depending on device) and withstanding 46 V in the off state. Clamp diodes provide protection against inductive transients. Special power-up sequencing is not required. Full-,and Half-step operation are externally selectable for the SLA7070/71/72/73MR. Full-, Half-, quarter-, and eighth-, and sixteenth-step operation are externally selectable for the SLA7075/76/77/78MR. Half-step excitation alternates between the one-phase and two-phase modes (A-AB-B-AB-A-AB-BAB),providing an eight-step sequence. February, 2006 ■Package—SLA23Pin ■Applications ● PPC ● Printer ● OA Equipment ■Key Specifications ● Motor Supply Voltage (VM): 44V max ● Load Supply Voltage (Vs): 10V to 44V ● Logic Supply Voltage (Vcc): 3V to 5.5V ● Output Current (Io): 1A(SLA7070MxRxx, SLA7075MxRxx) 1.5A(SLA7071MxRxx, SLA7076MxRxx) 2A(SLA7072MxRxx, SLA7077MxRxx) 3A(SLA7073MxRxx, SLA7078MxRxx) The x represents P, W, or R according to the functions (See App Note). ● Output Maximum Voltage (VDSS): 100V min ■Features ● To 3 A Output Rating ● Internal Sequencer for Microstepping Operation ● PWM Constant-Current Motor Drive ● Cost-Effective, Multi-Chip Solution ● 100 V, Avalanche-Rated NMOS Outputs ● Low RDS(on) NMOS Outputs (150 milliohms typical) ● Advanced, Improved Body Diodes ● Inputs Compatible with 3.3 V or 5 V Control Signals ● Sleep Mode ● Internal Clamp Diodes Typical Connection Vs=10V～ 44V ＋ Vcc=3.0V～ 5.5V Sleep CA Q1 ＋ r1 C1 OutA VDD OutA VBB OutB OutB CB マイコン 等 Reset Clock CW/CCW M1 SLA707xMR M2 M3 Sync Mo N.C. Ref/Sleep1 SenseA Gnd r2 r3 Microcomputer SenseB C2 1点Gnd ﾛｼﾞｯｸ Gnd Logic Ground Single Point Ground Pﾊﾟﾜｰ Gnd ower Ground . Sanken Electric Co.,Ltd. http://www.sanken-ele.co.jp/en/ 1/20 I03-004EA-060227 2-Phase Unipolar Stepper Motor Driver SLA707xM Series Scope The present specifications shall apply to a micro-stepping capable 2-phase unipolar stepper motor driver IC, SLA7077MR and shall apply to the devices compliant with RoHS Directive. Lead part solder: Pb free. Inner solder: Containing Pb > 85%. * Please refer to the electric characteristics in the application note for other devices of the series. February, 2006 Outline Type Structure Applications Hybrid integrated circuit Plastic molded (transfer mold) To drive a 2-phase stepper motor. (Micro-Stepping Capable. PWM Constant-Current Control.) Absolute maximum ratings Parameter Load Supply Voltage Main Power Supply Voltage Logic Supply Voltage Output Current Logic Input Voltage REF Input Voltage Sense Voltage Power Dissipation Junction Temperature Operating Temperature Range Symbol VM VBB VDD IO VIN VREF VRS PD Tj Ta Ratings 46 46 7 2.0* -0.3 to VDD+0.3 -0.3 to VDD+0.3 ±2 4.7 17 150 -20 to 85 Unit V V V A V V V W W °C °C Remarks Vref=0.4V, Mode F Except for tw