A3983SLP Allegro Microsystems Inc, A3983SLP Datasheet
A3983SLP
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A3983SLP Summary of contents
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DMOS Microstepping Driver with Translator Features and Benefits ▪ Low R outputs DS(ON) ▪ Automatic current decay mode detection/selection ▪ Mixed and Slow current decay modes ▪ Synchronous rectification for low power dissipation ▪ Internal UVLO and thermal shutdown circuitry ...
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... Internal synchronous rectification control circuitry is provided to improve power dissipation during PWM operation. Internal circuit protection includes: thermal shutdown with hysteresis, undervoltage Selection Guide Part Number A3983SLPTR-T 24-pin TSSOP with exposed thermal pad Absolute Maximum Ratings Characteristic Load Supply Voltage Output Current ...
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A3983 ELECTRICAL CHARACTERISTICS Characteristics Output Drivers Load Supply Voltage Range Logic Supply Voltage Range Output On Resistance Body Diode Forward Voltage Motor Supply Current Logic Supply Current Control Logic Logic Input Voltage Logic Input Current Microstep Select 2 Input Hysteresis ...
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A3983 STEP MS1, MS2, RESET, or DIR STEP minimum, HIGH pulse width STEP minimum, LOW pulse width Setup time, input change to STEP Hold time, input change to STEP Figure 1. Logic Interface Timing Diagram Table 1. Microstep Resolution Truth ...
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A3983 The A3983 is a complete microstep- Device Operation. ping motor driver with a built-in translator for easy operation with minimal control lines designed to operate bipolar stepper motors in full-, half-, quarter-, and sixteenth-step modes. The currents ...
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A3983 pin is tied to an external voltage > then t 30 μs. The ROSC pin can be safely connected to the VDD pin for this purpose. The value ≈ R OFF OSC This function ...
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A3983 Layout. The printed circuit board should use a heavy ground- plane. For optimum electrical and thermal performance, the A3983 must be soldered directly onto the board. On the under- side of the A3983 package is an exposed pad, which ...
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A3983 STEP 100.00 70.71 Phase 1 I OUT1A 0.00 Direction = H (%) –70.71 –100.00 100.00 70.71 Phase 2 I OUT2A 0.00 Direction = H (%) –70.71 –100.00 Figure 2. Decay Mode for Full-Step Increments STEP Phase 1 I OUT1A ...
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A3983 STEP 100.00 92.39 83.15 70.71 55.56 38.27 Phase 1 19.51 I OUT1A 0.00 Direction = H –19.51 (%) –38.27 –55.56 –70.71 –83.15 –92.39 –100.00 100.00 92.39 83.15 70.71 55.56 38.27 Phase 2 19.51 I OUT2B 0.00 Direction = H ...
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A3983 Table 2. Step Sequencing Settings Home microstep position at Step Angle 45º; DIR = H DMOS Microstepping Driver with Translator Phase 1 Full Half 1/4 1/8 Current Step Step Step Step [% I tripMax ] # # # # ...
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A3983 Terminal List Table Name CP1 CP2 VCP VREG MS1 MS2 RESET ROSC SLEEP VDD STEP REF GND DIR OUT1B VBB1 SENSE1 OUT1A OUT2A SENSE2 VBB2 OUT2B ENABLE NC PAD *The GND pins must be tied together externally by connecting ...
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A3983 LP Package, 24-Pin TSSOP with Exposed Thermal Pad 7.80 ±0. 4.32 24X 0.10 C +0.05 0.25 0.65 –0.06 Copyright ©2005-2009, Allegro MicroSystems, Inc. The products described here are manufactured under one or more U.S. ...