njw4350 New Japan Radio Co.,Ltd, njw4350 Datasheet
njw4350
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njw4350 Summary of contents
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... The motor can be controlled by step and direction pulse input which makes the programming task of a micro controller simple and easy. Enhanced control feature, Motor Origin output, INH and RESET, make the NJW4350 applicable for a wide range of stepper motor applications. FEATURES Wide Voltage Range Low R =0.9 typ.@Io= 500mA(U& ...
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... Logic ground terminal of logic supply VDD SGND 15 Phase output initial status detection output MO 16 Logic unit power supply voltage terminal VDD - 2 - VDD POWER ON RESET Thermal Shut Down Fig.2 Brock Diagram I DD NJW4350 VMM I I PLEAK O PB1 PB2 PA1 PA2 PGND ...
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... SYMBOL (unit (V) mm 7.0 V (V) DD 0.7 I (A) o 1.5 I ( +0 -40 ~ +85 Topr ( C) -50 ~ +150 Tstg ( C) 1.6(DIP) P (W) D 1.3(EMP) SYMBOL TEST CONDITION NJW4350 (Ta=25 C) NOTE (Ta=25 C) MIN. TYP. MAX. UNIT 4.5 5.0 5 -40 - 125 ...
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... NJW4350 ERECTRICAL CHARACTERISTICS PARAMETER GENERAL Quiescent current Thermal shutdown Thermal shutdown hysteresis LOGIC Input H voltage Input L voltage Input current (High) Input current (Low) MO output saturation voltgea MO output leak current OUTPUT Output resistance Output leak current Output turn ON time Output turn OFF time ...
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... The DIR signal determines the step direction. The direction of the stepping motor depends on how the NJW4350 is connected to the motor. Although DIR can be modified this should be avoided since a misstep of 1 pulse increment may occur set simultaneous with the negative edge. See the timing chart in Figure 3. ...
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... NJW4350 INH – phase output off All phase output is turned off when INH goes high reducing power consumption (consumption current). RESET A two-phase stepping motor repeats the same winding energizing sequence every angle that is a multiple of four of the basic step. The phase logic sequence is repeated every four pulses in the full step mode and every eight pulses in the half step mode ...
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... Fig.8 Half step mode / CW sequence STEP RESAET PB1 PB2 PA1 PA2 Fig.9 Half step mode / CCW sequence Fig.10 Half step mode / INH sequence NJW4350 After OFF OFF ON ON OFF ON ON OFF OFF ON OFF ON ON OFF ...
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... NJW4350 Application examples Logic input unit The circuit handles an open state in the logic input unit level input. Unused input units should be fixed at Vdd level to maximize noise resistance characteristics. Phase output unit The phase output unit is provided with a power sink to enable unipolar drive of stepping motor windings. The resistor connected to the common line of the winding determines the maximum motor power ...
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... VMM Fig.13 Zener diode and turn off circuit. Turn off circuit (case of zener diode) VZ VMM Vd Fig.15 Zener diode and turn off circuit 2. NJW4350 R i VMM Fig12 Resistor and turn off circuit. VMM i VZ Fig.14 Power regeneration and turn off circuit. Negative voltage ...
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... NJW4350 ELECTRICAL CHARACTERISTICS EXAMPLES VDD VS. IDD1 INPUT=H ta=25[dg.C] 3.0 2.5 2.0 1.5 1.0 0.5 0 VCC[V] IMO VS. VMO VDD=5V Ta=25[dg.C] Fig. 15 Ambient temperature vs. allowable power 1.0 dissipation characteristics example 0.8 0.6 0.4 0.2 0 IMO[mA] Iout VS. Vout VDD=7V Ta=25[dg.C] 2.0 1.8 1.6 1.4 1.2 Fig. 17 Logic output saturation voltage vs. 1.0 output current characteristics example 0.8 0.6 0.4 0.2 0.0 0 200 400 600 800 Iout[mA 3.0 2.5 2.0 1.5 1.0 0.5 0 ...