thermal behavior drivers nanotec ? gmbh ? gewerbestr. 11 ? d-85652 landsham ? phone 089/900 686-0 ? fax 089/900 686-50 ? http://www.nanotec.com max. nominal values (at 25 c) dimensions (mm) IMT-901 - microstep constant current driver ?ic? supply voltage v cc : 5,5 v v m : 40 v output current lout: 1,5 a (ave) 2,5 a (peak) power dissipation p d 4 w/40 w without/with heat sink t c =85 c operation temp.: -40c to 85c storage temp.: -55c to 150c input mode m1 m2 l l 1/1 step h l 1/2 step l h 1/4 step h h 1/8 step pin-assignment inputs input-/output-signals advantages: the imt 901 is a pwm chopper type sinusoidal micro step bipolar stepp- ping motor driver. sinusoidal micro step operation is generated by means of built-in hardware and is outputted for operation by clock signal inputting. only one ic for power and logic (up to 2,5 a/phase) reduces considerably space, assembly time and cost of a microstep driver with a max. functions yet with a min. of ext. components. selectable from: 1/1-, 1/2-, 1/4-, 1/8-step enables individual application-related microstep switching, smooth and constant running and reduces considerably system resonance. current down system or current zeroing reduces or eliminates motor power losses and heating during stand- still signal circuit times t1: pulse width >10s t2: pulse width >10s t3: > 5s t4: >10s mounting form cpp-25
nanotec ? gmbh ? gewerbestr. 11 ? d-85652 landsham ? phone 089/900 686-0 ? fax 089/900 686-50 ? http://www.nanotec.com drivers block diagramm (+ external circuit) quarter-/eighth-step mode electrical characteristics 1 (ta=25, v cc =5v, v m =24v) electrical characteristics 2 (ta=25, v cc =5v, v m =24v) full-/half-step mode IMT-901 function table
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