M54640P Mitsubishi Electronics America, Inc., M54640P Datasheet
M54640P
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M54640P Summary of contents
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... DESCRIPTION The M54640P is a semiconductor IC to drive a stepper motor by the bipolar method. FEATURES Bipolar and constant-current drive Wide current control rage (20 – 800mA) Wide supply voltage drive range (10 – 40V) Built in flywheel diodes Current level can be changed by steps or continuously. Built in a thermal shutdown circuit ...
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... The voltage at the sensing resistor is not included. I =500mA O V =10V Ta=25 C, dVK/dt 50mV = =2.4V “H” =0.4V “L” I M54640P STEPPER MOTOR DRIVER Ratings Unit -0.3 – -0.3 – -0.3 – -0.3 – -0.3 – -10 mA -10 mA 1000 mA 1 ...
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... R The pulse width of the monostable at the external timing follows. t Retrigger during t • Analog control The output current level can be continuously changed by changing the voltage at V comparator. MITSUBISHI <CONTROL / DRIVER IC> M54640P STEPPER MOTOR DRIVER V – – OFF ...
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... TIMING CHART 2-phase excitation Phase A Phase ( ( 1-2-phase excitation Phase A Phase ( ( Microstep (divided into six) Phase A Phase (B) 1 MITSUBISHI <CONTROL / DRIVER IC> M54640P STEPPER MOTOR DRIVER ...
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... ( C/W j Mounted on a 25cm with copper on one side 10cm C : 100cm 75 100 MITSUBISHI <CONTROL / DRIVER IC> M54640P STEPPER MOTOR DRIVER 2 glass epoxy board which is coated = 45 C/W c-a 2 aluminum heat sink (1t) is used C/W c-a 2 aluminum heat sink (1t) is used C/W c 150 C j(max) ...
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... Therefore desirable to take a safe measure such as fixing a fuse to avoid such a situation that the board is damaged by a fire when output pin is internally short-circuited by excessively applied surge voltage by accident. M54640P STEPPER MOTOR DRIVER 5V Phase A I ...