NJM3772D2 NJR, NJM3772D2 Datasheet
NJM3772D2
Specifications of NJM3772D2
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NJM3772D2 Summary of contents
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... Specially matched to the Dual DAC NJU39610 • Packages DIP22 / PLCC28 BLOCK DIAGRAM NJM 3772 Figure 1. Block diagram DUAL STEPPER MOTOR DRIVER Phase — — + — Phase V C GND NJM3772 PACKAGE OUTLINE NJM3772FM2 NJM3772D2 MM1 Logic B1 V BB1 V BB2 M B2 Logic MM2 2 ...
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PIN CONFIGURATIONS V 5 BB2 NJM3772FM2 GND BB1 Figure 2. Pin configurations PIN DESCRIPTION PLCC DIP Symbol Description 1- GND Ground and ...
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FUNCTIONAL DESCRIPTION Each channel of the NJM3772 consists of the following sections: an output H-bridge with four transistors, capable of driving up to 1000 mA continuous current to the motor winding; a logic section that controls the output transis- tors; ...
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ABSOLUTE MAXIMUM RATINGS Parameter Voltage Logic supply Motor supply Output stage supply Logic inputs Comparator inputs Reference inputs Current Motor output current Logic inputs Analog inputs Temperature Operating junction temperature Storage temperature Power Dissipation (Package Data) Power dissipation at T ...
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ELECTRICAL CHARACTERISTICS Electrical characteristics over recommended operating conditions, unless otherwise noted. -20 C< T Parameter General Supply current Total power dissipation Total power dissipation Thermal shutdown junction temperature Turn-off delay Logic Inputs Logic HIGH input voltage Logic LOW input voltage ...
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APPLICATIONS INFORMATION Current control The output current to the motor winding is determined by the voltage at the reference input and the sensing resistor Chopping frequency, winding inductance and supply voltage also affect the current, but to ...
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External components The NJM3772 exhibits substantially less power dissipation than most other comparable stepper motor driver ICs on the market. This has been achieved by creating an external voltage drop in series with the upper transistor in the output H-bridge, ...
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Motor selection The NJM3772 is designed for two-phase bipolar stepper motors, i.e., motors that have only one winding per phase. The chopping principle of the NJM3772 is based on a constant frequency and a varying duty cycle. This scheme imposes ...
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TYPICAL CHARACTERISTICS P (W) D NJM3772 3.0 Two channels on 0.68 ohm. 2.5 2.0 1.5 Two channels on 0.47 ohm. B 1.0 One channel on 0.47 ohm ...