njm6219 New Japan Radio Co.,Ltd, njm6219 Datasheet
njm6219
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njm6219 Summary of contents
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... GENERAL DESCRIPTION The NJM6219 is a stepper motor driver, which consists of a LS-TTL compartible logic input stage, off time control circuits and a pair of high power H-bridges and protection diodes. The output current 1000mA. The NJM6219 with small number of external components conforms a complete control and drive unit for stepper motor systems ...
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BLOCK DIAGRAM Vcc VCC Phase1 PHASE1 VR1 PHASE2 Phase1 VR2 GND - Current Logic Select Current Logic Select MA1 MB1 VMM1 TSD VMM2 MB2 ...
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PIN DESCRIPTION EMP Symbol Description 1 MA1 Motor output A, channel 1. Motor current flows from MA1 to MB1 when Phase1 is high. 2 MA2 Motor output A, channel 2. Motor current flows from MA2 to MB2 when Phase2 ...
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ABSOLUTE MAXIMUM RETINGS PARAMETER Voltage Logic Supply Motor Supply Logic Input Voltage Comparator Input Voltage Reference Input Voltage Current Motor Output Current Logic Input Current Analog Input Current Temperature Operating Temperature Storage Temperature ■ RECOMMENDED OPERATING CONDITIONS PARAMETER Logic ...
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ERECTRICAL CHARACTERISTICS (T PARAMETER General Supply Current Turn Off Thermal Shutdown Temperature Logic Input H Level Input Voltage L Level Input Voltage H Level Input Current L Level Input Current Input Resistance Input Resistance Analog Input Threshold Voltgae Input ...
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... VREF VCC 820pF 56kohm ■ TYPICAL APPLICATION CIRCUIT - 820pF R C 1kohm GND C2 TSD VCC TSD C1 GND R C 1kohm C C 820pF Figure 3. Application Circuit Rs 1ohm E2 LOGIC MB2 MA2 NJM6219 VMM MA1 LOGIC MB1 E1 Rs 1ohm MOTOR VMM ...
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... FUNCTIONAL DESCRIPTION The NJM6219 is intended to drive a bipolar constant current through one winding of a 2-phase stepper motor. Current control is achieved through switched-mode regulation, see figure 4 and 5. Three different current levels and zero current can be selected by the input logic. The circuit contains the following functional blocks: ● ...
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The specific values of the different current levels are determined by the reference voltage V the sensing resistor The peak motor current can be calculated as follows • 0.080 [A], at 100% ...
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PRINCIPAL OPERATING SEQUENCE - 9 - ...
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APPLICATIONS INFORMATION Motor selection Some stepper motors are not designed for continuous operation at maximum current. As the circuit drives a constant current through the motor, its temperature can increase, both at low- and high-speed operation. Some stepper motors ...
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... NJM6219 VCC VS. ICC @NJM6219 I0=I1=HIGH VCC[V] COMP input Voltage VS. COMP input Current @NJM6219 VCC=VR=5V I0=LOW I1=HIGH 0 100 200 300 Vc[mV] Phase input Voltage VS. Phase input Current @NJM6219 VCC=VR=5V 0.0 1.0 2.0 Vin[ 400 500 3.0 4 ...
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... NJM6219 ■ TYPICAL CHARACTERISTICS NJM6219(1ch Drive)VCC=5V, VMM=40V, ta=25°C 6.0 5.0 4.0 3.0 2.0 1.0 0.0 0 NJM6219(2ch Drive)VCC=5V, VMM=40V, ta=25°C 6.0 5.0 4.0 3.0 2.0 1.0 0 Power Dissipation vs Motor Current 200 400 600 I [mA] M Power Dissipation vs Motor Current 200 400 600 I [mA] M 800 1000 1200 800 1000 1200 [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions ...