M54677FP MITSUBISHI, M54677FP Datasheet
M54677FP
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M54677FP Summary of contents
Page 1
... DESCRIPTION The M54677FP is a semiconductor IC to drive a bipolar stepper motor directly by controlling the coil current with the constant current method. FEATURES Wide output current control range (20 – 1000mA) Bipolar and constant current Built in a thermal shutdown circuit Built in flywheel diodes APPLICATION ...
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... Vref pin input current (Vref=0V, C=500mV) Voltage at sensing resistor is not included. Io=0.5A Pin 16 current (16Pin=5V) Pin 21 current (21Pin=5V) “H” Vin = 5V “L” Vin = 0V “H” Vin = 5V “L” Vin = 0V M54677FP Ratings Unit -0.3 – -0.3 – -0.3 – 6 -0.3 – Vcc V V -0.3 – Vcc 1500 ...
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... At the comparator output fall edge, the monostable is triggered. The pulse width of the monostable at the external timing C Retrigger during T (5) Analog control The output current level can be continuously changed by changing the voltage at V comparator. MITSUBISHI <CONTROL / DRIVER IC> M54677FP 2-PHASE STEPPER MOTOR DRIVER ...
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... Vcc1 Vcc2 Rt2 Ph1 Ph2 MITSUBISHI <CONTROL / DRIVER IC> M54677FP 2-PHASE STEPPER MOTOR DRIVER Cc2 24V Rc2 Power GND Rs2 Setting example 330 Rs1, Rs2 = 0.5 Rc1, Rc2 = 1.0k R1 Cc1, Cc2 = 820pF Rt1, Rt2 = 47k Ct1, Ct2 = 330pF ...
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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 excessive surge voltage applied externally by accident. MITSUBISHI <CONTROL / DRIVER IC> M54677FP 2-PHASE STEPPER MOTOR DRIVER ...