njw4351 New Japan Radio Co.,Ltd, njw4351 Datasheet
njw4351
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njw4351 Summary of contents
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... GENERAL DESCRIPTION The NJW4351 is a high efficiency DMOS unipolar stepper motor driver IC. Compared to previous devices more suitable for low voltage operation, capable of handling 5.0V, 3.3V and the like logic circuits. Drive Stage consists of DMOS which produces high efficiency and low heat generation motor drive circuit. ...
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... NJW4351 PIN CONNECTION PD 1 VDD 2 HSM 3 STEP 4 DIR 5 RESET 6 ENABLE ALARM 9 GND 10 SSOP20-C3 PIN FUNCTION LIST Terminal Name SSOP20-C3 DIP16 VDD 3 2 HSM 4 3 STEP 5 4 DIR 6 5 RESET 7 6 ENABLE ALARM 10 9 GND 11,12,19, ...
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... Tj -40 to +150 Tstg -50 to +150 1 1.5 1.2 P 1.4 D 2.0 SYMBOL TEST CONDITION = =3.3V DD NJW4351 (Ta=25°C) UNIT V VDD PIN V OUT1A/1B/2A/2B PIN STEP, DIR, HSM, RESET, V ENABLE, PD PIN V ALARM PIN V MO PIN A OUT1A/1B/2A/2B PIN mA ALARM PIN mA MO PIN °C - °C - °C ...
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... NJW4351 ELECTRICAL CHARACTERISTICS PARAMETER GENERAL Quiescent current Quiescent current (Standby) INPUT BLOCK1 (STEP) H level input voltage1 L level input voltage1 Input hysteresis voltage1 H level input voltage2 L level input voltage2 Input hysteresis voltage2 H level input current L level input current Input pull down resistance ...
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... Setup Time, t DS1 DS2 t ,t =HSM,DIR,RESET, PD, t DS1 DH1 At VDD=3.3V V 5.0V 2.0V ∆V HYS 0. level H level DH2 ,t =Data Hold Time DH1 DH2 ,t =HSM,DIR DS2 DH2 NJW4351 H level input voltage L level input voltage L lebvel H level L level DS2 DH1 ...
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... NJW4351 ♦ Thermal Shutdown Operational Definition TSD Recovery TEMP (Normal Operation) -40°C ♦ Under Voltage Protection Operational Definition VDD 5.5V Recommended Operating Maximum Voltage 2.7V Recommended Operating Minimum Voltage UVLO Recovery Voltage(Normal Operation) 2.1V 1.9V UVLO Operating Voltage(Output Suspention Hysteresis TSD Operating TEMP TEMP (Output Suspention) 140° ...
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... ON. internal logic circuit is ON. (Inside PULL DOWN) Function ACTIVE RESET RESET (Inside PULL DOWN) Function ACTIVE RESET+POWER SAVING (Inside PULL DOWN) NJW4351 MO-Motor Origin Position Output MO Function The translator is in noninitial H status The translator is in initial L status ALARM-Alarm Output ALARM ...
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... NJW4351 TIMING CHART POR DIR H ENABLE H RESET HSM L L STEP OUT2B OFF OUT2A ON OUT1B OFF OUT1A POR DIR H H ENABLE H RESET HSM L L STEP OUT2B OFF OUT2A ON OUT1B OFF OUT1A POR DIR L H ENABLE ...
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... When RESET is active OUT terminals are OFF, and internal logic circuit is to reset. Fig.7 Full Step Mode / Reset Sequence * When RESET is active OUT terminals are OFF, and internal logic circuit is to reset. Fig.8 Half Step Mode / Rest Sequence NJW4351 - 9 - ...
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... NJW4351 POR DIR L H ENABLE RESET H HSM L STEP L OUT2B OFF OUT2A ON OUT1B OFF OUT1A POR DIR H ENABLE H RESET H HSM L STEP OUT2B OFF OUT2A ON OUT1B OFF OUT1A When PD is active it forces all settings to initialize and be in stand-by mode, and low ...
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... DIR – Direction The DIR signal determines the step direction. The direction of the stepper motor depends on how the NJW4351 is connected to the motor. DIR can be modified anytime, it miss-steps when it is simultaneous with the positive edge. • HSM – Half/full Step Mode Switching This signal determines whether the stepper motor runs at half step or full step mode ...
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... NJW4351 POR – Power On And Reset Function The POR connected to VDD is to prevent miss-step under unstable condition of the inputting of logic supply voltage VDD. After inputting VDD, the phase outputs are set to the initial energizing pattern output status. PHASE OUTPUT BLOCK The phase output block consists of four open-drain DMOS FET capable of sinking max 1.5A. ...
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... The circuit configuration is that of Fig.15. Set the Zener voltage. For example, if VMM higher than12V. 8.1.2 When negative voltage: VMM < The circuit configuration is that of Fig.16. In order to prevent a malfunction due to a negative voltage, be sure to insert diodes in series with the phase output terminals. NJW4351 - 13 - ...
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... NJW4351 VMM Fig.11 Diode and turn off circuit. VMM Fig.13 Zener diode and turn off circuit. (case of zener diode) VMM Vd Fig.15 Zener diode and turn off circuit Turn off circuit VMM Fig12 Resistor and turn off circuit. VMM ...
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... Micro controller/ Microprocessor output HSM STEP output DIR output RESET output ENABLE output PD output MO input ALARM input GND VDD POWER ON RESET GATE TRANSLATOR DRIVE Bias Circuit UNDER VOLTAGE LOCK OUT THERMAL SHUT DOWN NJW4351 VMM + OUT2B OUT2A OUT1B OUT1A SENSE1 SENSE2 - 15 - ...
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... NJW4351 TYPICAL CHARACTERISTICS IDD - VDD STEP=HSM=DIR=RESET=ENABLE=PD=VDD, Ta=25 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 0.0 1.0 2.0 3.0 VDD [V] RON1 - Io VDD=3.3V, Ta=25 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 100 200 Io [mA VDD=3.3V,Ta=25 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 Two channels on 0.2 0 100 200 Io [mA 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 4.0 5.0 6.0 7 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 300 400 500 o C One channel on 300 400 500 RON - VDD o Io=500mA, Ta= VDD [V] RON2 - Io o VDD=5.0V, Ta=25 ...
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... Tj [deg. 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 0 1000 1250 1500 3.0 2.8 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -50 75 100 125 150 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 75 100 125 150 -50 NJW4351 VMO - IMO o VDD=3.3V, RESET=0V,Ta= IMO [mA] RON2 - Tj VDD=5.0V, Io=500mA - 100 Tj [deg.C] VOR - Tj VDD=3.3V,Io=500mA - 100 Tj [deg.C] 20 125 150 125 150 - 17 - ...
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... NJW4351 TYPICAL CHARACTERISTICS VMO - Tj VDD=3.3V,IMO=10mA 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 -50 - [deg. 100 125 150 [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages ...