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A4988 Datasheet(PDF) 3 Page - Allegro MicroSystems |
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A4988 Datasheet(HTML) 3 Page - Allegro MicroSystems |
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3 / 19 page  DMOS Microstepping Driver with Translator and Overcurrent Protection A4988 3 Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 4988-DS Functional Block Diagram SENSE1 SENSE2 VREG VCP CP2 Control Logic DAC VDD PWM Latch Blanking Mixed Decay DAC STEP DIR RESET MS1 PWM Latch Blanking Mixed Decay Current Regulator CP1 Charge Pump R S2 R S1 VBB1 OUT1A OUT1B VBB2 OUT2A OUT2B 0.1 F V REF Translator Gate Drive DMOS Full Bridge DMOS Full Bridge 0.1 F 0.22 F OSC ROSC MS2 REF ENABLE SLEEP MS3 OCP OCP |
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