NJM3773D2 NJR, NJM3773D2 Datasheet
NJM3773D2
Specifications of NJM3773D2
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NJM3773D2 Summary of contents
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... Digital filter on chip eliminates external filtering components • Packages DIP22 / PLCC28 / EMP24(Batwing) BLOCK DIAGRAM NJM3773 Figure 1. Block diagram DUAL STEPPER MOTOR DRIVER Phase Dis – – – Dis Phase V C GND NJM3773 PACKAGE OUTLINE NJM3773E3 NJM3773D2 NJM3773FM2 Logic MM1 V MM2 M B2 Logic ...
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PIN CONFIGURATIONS VMM 20 VMM 5 NJM 1 2 GND GND 6 19 3773E3 GND 7 18 GND ...
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FUNCTIONAL DESCRIPTION Each channel of the NJM3773 consists of the following sections: an output H-bridge with four transistors and four recirculation diodes, capable of driving up to 750 mA continuous current to the motor winding, a logic section that controls ...
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ABSOLUTE MAXIMUM RATINGS Parameter Voltage Logic supply Motor supply Logic inputs Analog inputs Current Motor output current Logic inputs Analog inputs Temperature Operating junction temperature Storage temperature Power Dissipation (Package Data) Power dissipation +25 C, DIP and ...
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ELECTRICAL CHARACTERISTICS Electrical characteristics over recommended operating conditions, unless otherwise noted. -20 C Parameter General Supply current Supply current Total power dissipation Total power dissipation Thermal shutdown junction temperature Turn-off delay Logic Inputs Logic HIGH input voltage Logic LOW input ...
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APPLICATIONS INFORMATION Current control The regulated output current level to the motor winding is determined by the voltage at the reference input and the value of the sensing resistor expressed as [A] M,peak ...
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Current sense filtering At turn-on a current spike occurs, due to the recovery of the recirculation diodes and the capacitance of the motor winding. To prevent this spike from reseting the flip-flops through the current sensing comparators, the clock oscillator ...
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V (Reference) inputs R The comparator inputs of NJM3773 (V gives a great deal of flexibility in selecting a suitable voltage divider network to interface to different types of Digital- to-Analog converters. Unbuffered DACs are preferably interfaced by a high ...
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Half-step mode. In the half-step mode, the current in one winding is brought to zero before a complete current reversal is made. The motor will then have taken two half steps equalling one full step in rotary movement. The cycle ...