SLA7051M

2-Phase Unipolar Stepper Motor Driver SLA7050M/7051M/7052M ■General Description Combining low-power CMOS logic with high-current, high-voltage power FET outputs, the Series SLA705xM translator/driver provides complete control and drive for a two-phase unipolar stepper motor with internal fixed off time, pulse-width modulation (PWM) control of the output current in a power multi-chip module (PMCM™). The CMOS logic section provides the sequencing logic, direction, full/half-step 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 1,2 or 3 A and withstanding 46 V in the off state. Ground-clamp and flyback diodes provide protection against inductive transients. Special power-up sequencing is not required. Full-step (2 phase) and half-step operation are externally selectable. Two-phase drive energizes two adjacent phases in each detent position (AB-BC-CD-DA). This sequence mode offers an improved torquespeed product, greater detent torque, and is less susceptable to motor resonance. Half-step excitation alternates between the one-phase and two-phase modes (A-AB-B-BC-C-CD D-DA), providing an eight-step sequence. October 2005 ■Package----SLA18Pin ■Applications ●PPC ●Printer ●OA Equipment ■Key Specifications ●Motor Supply Voltage (VM)：44V max ●Load Supply Voltage (Vs)：10V～44V ●Logic Supply Voltage (Vcc)：3V～5.5V ●Output Current (Io)：1A(SLA7050M) 2A(SLA7051M) 3A(SLA7052M) ●Output Maximum Voltage (VDSS)：100V min ■Features ●To 3A Output Rating ●Internal Sequencer for Full or Half-Step Operation ●PWM Constant-Current Motor Drive ●Cost-Effective, Multi-Chip Solution ●100 V, Avalanche-Rated NMOS ●Low rDS(on) NMOS Outputs (300 milli-ohms typical) ●Advanced, Improved Body Diodes ●Half-Step and Full-Step Unipolar Drive ●Inputs Compatible with 3.3 V or 5 V Control Signals ●Sleep Mode ●Internal Clamp Diodes Typical Connection Vs=10V～ 44V 1 3 14 16 18 ＋ Vcc=3.0V～5.5V Disable CA 5 Q1 ＋ r1 7 8 11 12 9 OutA OutA/ Vcc Vs OutB/ OutB NC GA GB NC SenseB 13 2 4 15 17 CB マイコン 等 Clock SLA７０５１ M Sync SLA７０５２ M CW/CCW Full/Half Ref SenseA Gnd 6 10 SLA７０５０ M r2 RsA RsB S-Gnd Gnd P-Gnd Sanken Electric Co.,Ltd. http://www.sanken-ele.co.jp/en/ I03-002EA-051006 1/14 2-Phase Unipolar Stepper Motor Driver SLA7050M/7051M/7052M Scope October 2005 The present specifications shall apply to Sanken 2 Phase Stepper Motor Driver IC,SLA705xM Series. The present specifications shall apply to SLA 705xM Series which is performed RoHS instructions. Lead part solder：Pb free Inner solder：Lead content ＞85% Outline Type Structure Applications Hybrid integrated circuit Plastic molded (transfer mold) To drive a 2 phase stepper motor. (Full or Half Step. PWM Current Control.) Absolute maximum ratings Characteristic Motor Supply Voltage Load Supply Voltage Logic Supply Voltage Symbol VM VS Vcc Ratings 46 46 7 1.0 Output Current Io 2.0 3.0 Logic Input Voltage REF Input Voltage Sense Voltage Total Device Dissipation Junction Temperature Operating Temperature Range Storage Temperature Range VIN VREF VRs PD Tj Ta Tstg －0.3～Vcc＋0.3 －0.3～Vcc＋0.3 －2～2 4 20 150 －20～85 －30～150 V V V W W ℃ ℃ ℃ Tw