94 ics 1-2-1 2-phase stepper motor unipolar driver ics 2-phase/1-2 phase excitation support, built-in sequencer sla7070mr, mpr, mprt/7071mr, mpr, mprt/7072mr, mpr, mprt/7073mr, mpr, mprt absolute maximum ratings parameter symbol ratings unit remarks motor supply voltage v m 46 v driver supply voltage v bb 46 v logic supply voltage v dd 6v output current io *1 a mode f logic input voltage v in C0.3 to v dd +0.3 v ref input voltage v ref C0.3 to v dd +0.3 v sense voltage v rs 2v excluding tw<1 s power dissipation pd 4.7 w when t a = 25 c 17 when t c = 25 c junction temperature t j +150 c operating ambient temperature t a C20 to +85 c storage temperature t stg C30 to +150 c features ? lineup of built-in current sense resistor andbuilt-in protection circuit-type ? power supply voltages, v bb : 46 v (max), 10 to 44 v normal operating range ? logic supply voltages, v dd : 3.0 to 5.5 v ? maximum output currents: 1 a, 1.5 a, 2 a, and 3 a ? built-in sequencer ? self-excitation pwm current control with fixed off-time ? synchronous pwm chopping functionprevents motor noise in hold mode ? sleep mode for reducing the ic input currentin stand-by state ? zip type 23-pin molded package (slapackage) *1: output current value may be limited for the sla7070mr, mpr, mprt (1.0 a), sla7071mr, mpr, mprt (1.5 a), sla7072mr, mpr, mprt (2.0 a), and sa7073mr, mpr, mprt (3.0 a), depending on the duty ratio, ambient temperature, and heating conditions. be sure that junction temperature of t j is not exceeded under any circumstances. recommended operating conditions parameter motor supply voltage driver supply voltage logic supply voltage case temperature symbol v m v bb v dd t c unit v v v c rating min. max. 44 10 44 3.0 5.5 90 remarks the v dd surge voltage should be 0.5 v or lower t emperature at pin-12 lead (without heatsink) par ameter symbol unit ratings min. max. 15 100 5 0.85 0.60.4 0.24 1.1 1.25 1.22.1 0.25vdd 0.3 0.45 0.4 0.45 vdd 0.3140.314 0.211 0.160 0.751.25 1.25 i bb i bbs i dd v( br)dss r ds(on) v f fclock v il v ih i il i ih v ref v refs i ref v sense t se t con t coff r s vocp iocp t tsd v flagl v flagh i flagl i flagh modef mode8 ton(min) toff main supply currentlogic 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 voltage sleep-enable recovery time switching time sense resistance overcurrent sense voltage overcurrent sense current thermal protection temperature flag output voltage flag output current step reference current ratio pwm minimum on time pwm off time 100250 0.75vdd 0.040.04 0.04 0.04 2 100 0.2960.296 0.199 0.150 0.65 1.25Cvdd C1.25 typ. 0.7 0.450.25 0.18 0.85 1.0 0.950.95 1 1 10 v ref 2.01.5 0.3050.305 0.205 0.155 0.72.3 3.5 4.6 140100 70.7 3.2 12 conditions in operation sleep 1 and sleep 2 modes vbb=44v, i d =1ma sla7070m, i d =1.0a sla7071m, i d =1.5a sla7072m, i d =2.0a sla7073m, i d =3.0a sla7070m, i d =1.0a sla7071m, i d =1.5a sla7072m, i d =2.0a sla7073m, i d =3.0a when clock duty = 50% sla7070m, within the current setting range sla7071m, within the current setting range sla7072m, within the current setting range sla7073m, within the current setting range output off (sleep 1) when step reference current ratio is 100% sleep1&sleep2 clock out on clock out off sla7070m, tolerance of 3% sla7071m, tolerance of 3% sla7072m, tolerance of 3% sla7073m, tolerance of 3% sla7070xmpr, mprt, when motor coil shorts out sla7070mpr, mprt/7071mpr, mprt sla7072mpr, mprt sla7073mpr, mprt sla707xmprt, rear of case (at the saturation temperature) sla707xmpr, mprt, iflagl=1.25ma sla707xmpr, mprt, iflagh=C1.25ma sla707xmpr, mprt ma a ma v ? v khz v a v a v s s s ? va c v ma %% s s * the direction in which current flows out of the device is regarded as negative. electrical characteristics downloaded from: http:///
95 ics pin assignment internal block diagram C + C + outb outbouta outa outa outa outb outb v dd n.c. flag ref/sleep1 m1 m2 m3 cw/ccw clock reset v bb r s senseb r s sensea 1234 5 67 8916 10 15 11 20 21 22 23 14 mic 15 17 12 19 18 protect sequencer & sleep circuit pre- driver osc pwm control synchro control osc dac dac pwm control protect reg pre- driver the protect circuit is deleted and the flag pin is n.c. for sla7070mr, 7071mr, 7072mr, and 7073mr. *1: n.c. pin for sla7070mr, 7071mr, 7072mr, and 7073mr. t ypical connection diagram outb outa outa vdd c1 r1 q1 sla7070m series (2-phase/1-2 phase e xcitation) reset clock cw/ccw m1 m2 m3 sync n.c. flag ref/sleep1 outb ca vs=10v to 44v + bb sensea gnd one-point gnd c2 logic gnd cb + powe r gnd r2 r3 senseb vcc=3.0v to 5.5v micro- computer, etc. * there is no flag pin (pin-18) for sla7070mr, 7071mr, 7072mr, and 7073mr. external dimensions (zip23 with fin[sla23pin]) 31 0.2 24.4 0.2 16.4 0.2 3.2 0.15 0.65 22 p1.27 0.5 = 27.94 1 3.2 0.15 3.8 +0.2C0.1 0.55 +0.2C0.1 9.5 +1C0.5 31.3 0.2 9.9 0.2 12.9 0.2 16 0.2 4.8 0.2 1.7 0.1 2.45 0.2 5 0.5 (4.3) 4.5 0.7 (measured at the tip) (measured atthe root) (including the resin burr) 4C(r1) r-end gate burr forming no. no.2151 pin no. symbol function outa outa/ sensea n.c. m1m2 m3 clock v bb gnd ref/sleep1 v dd reset cw/ccw sync flag *1 senseb outb/ outb phase a output phase a output phase a current sense n.c. excitation mode/sleep 2 setting input step clock input driver supply (motor supply) device gnd control current mode/sleep 1 setting input logic supplyinternal logic reset input normal/reverse control input pwm control signal input protection circuit monitor output *1 phase b current sensephase b current output phase b current output product mass : approx.6g sla7070mr, mpr, mprt/7071mr, mpr, mprt/7072mr, mpr, mprt/7073mr, mpr, mprt downloaded from: http:///
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