njm13775 New Japan Radio Co.,Ltd, njm13775 Datasheet
njm13775
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njm13775 Summary of contents
Page 1
... NJM13775 is equipped with a Disable input to simplify half-stepping operation. The NJM13775 contains a clock oscillator, a set of comparators and flip-flops implementing the switching control, and two output H-bridges, including recirculation diodes. Voltage supply requirements are +5 V for logic and +10 to +45 V for the motor ...
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... NJM13775 PIN CONFIGURATION PIN DESCRIPTION PIN # Symbol 32 M Motor output B, channel 1. Motor current flows from Common emitter, channel 1. This pin connects to a sensing resistor Motor output A, channel 1. Motor current flows from Motor supply voltage, channel 1, + ...
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... FR-4 mounted on EIA/JEDC specified board RECOMMENDED OPERATING Range Parameter Logic supply voltage Motor supply voltage Output emitter voltage Motor output current Rise and fall time logic inputs Oscillator timing resistor Figure 3. Definition of symbols NJM13775 PIN No. Symbol Min 22 ...
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... NJM13775 ELECTRICAL CHARACTERISTICS Parameter General Supply current1 Supply current2 Total power dissipation1 Total power dissipation2 Thermal shutdown junction temperature Turn-off delay Logic Inputs Logic HIGH input voltage Logic LOW input voltage Logic HIGH input current Logic LOW input current Analog Inputs ...
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... FUNCTIONAL DESCRIPTION Each channel of the NJM13775 consists of the following sections: an output H-bridge with four transistors and four recirculation diodes, capable of driving up to 350mA continuous current to the motor winding, a logic section that controls the output transistors, an S-R flip-flop, and a comparator. The clock-oscillator is common to both channels. ...
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... For accurate current regulation, the sensing resistor should be a 0.5 -1.0 W precision resistor less than 1% tolerance and low temperature - coefficient. Constant Voltage Control Since there is no current detection Pin require R (12k ) and Figure 6. Typical stepper motor driver application with NJM13775. 4.7uF + STEP STEP Direction DIR Half/Full Step HSM ...
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... A higher clock frequency reduces current ripple, but increases the switching losses in the IC and possibly the iron losses in the motor. Figure 8. Stepping modes . S . The value NJM13775 and C at the RC-pin sets the digital limited kohm ...
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... It is not possible to use a motor that is rated for the same voltage as the actual supply voltage. Only rated current needs to be considered. Typical motors to be used together with the NJM13775 have a voltage rating while the supply voltage usually ranges from ...
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... Heat sink design Heat sink of NJM13775 is achieved by soldering the ground leads onto a copper ground plane on the PCB. By obtaining of a copper area on the PCB, its ability in transmitting heat away is improved. Maximum continuous output current is heavily dependent on the permissible loss and ambient temperature. Consult figure 9 ...
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... NJM13775 TYPICAL CHARACTERISTICS IM VS. Pd (Const. Voltage Drive) VMM=15V,VCC=VR=5V,DIS1=DIS2=0V,Ta=25 2.5 2.0 1.5 1.0 0.5 0.0 0 100 200 300 IM[mA] IM VS. Pd (Const. Current Driv e) VMM=15V,VCC=VR=5V,DIS1=DIS2=0V,Ta=25 2.5 2.0 1.5 1.0 0.5 0.0 0 100 200 300 IM[mA Two channels ON One channel ON 400 500 600 o C Two channels ON One channel ON 400 500 600 IM VS. Pd (Const. Voltage Drive) VMM=41V,VCC=VR=5V,DIS1=DIS2=0V,Ta=25 2 ...
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... VMM[ 120 100 NJM13775 VCC VS. ICC o VMM=15V/41V,VR=5V,DIS1=DIS2=0V,Ta= VCC[V] VMM VS. IMM o VCC=VR=5V,DIS1=DIS2=0V,Ta= VMM[ ...
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... NJM13775 TYPICAL CHARACTERISTICS IM VS. Vsat(upper) VCC=VR=5V,DIS1=DIS2=0V,Ta=25 1.4 1.2 1 0.8 0.6 0.4 0 100 200 300 IM[mA] IM VS. Vf(upper) o Ta=25 C 1.2 1 0.8 0.6 0.4 0 100 200 300 IM[mA 0.6 VMM=15V 0.5 VMM=41V 0.4 0.3 0.2 0.1 0 400 500 600 0 1.2 1 0.8 0.6 0.4 0.2 0 400 500 600 0 IM VS. Vsat(lower) o VCC=VR=5V,DIS1=DIS2=0V,Ta=25 C VMM=15V VMM=41V 100 200 300 400 IM[mA] IM VS. Vf(lower) o Ta=25 C 100 ...