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A3946KLPTR-T Datasheet(PDF) 8 Page - Allegro MicroSystems |
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A3946KLPTR-T Datasheet(HTML) 8 Page - Allegro MicroSystems |
8 / 13 page 8 Worcester, Massachusetts 01615-0036 (508) 853-5000 115 Northeast Cutoff, Box 15036 www.allegromicro.com 3946 Half-Bridge Power MOSFET Controller L P L P VREG C BOOT +VBAT +5 Vref Charge Pump BOOT GH S GL LGND VREG CP1 CP2 Charge Pump RESET Protection VREG Undervoltage Overtemperature UVLOBOOT IN2 ~FAULT DT Control Logic Turn-On Delay IN1 R DEAD 15.8 k Ω VREF Bootstrap UVLO 10 k Ω C REG C1 0.47 μF R GATE R GATE I LIM High Side Driver Low Side Driver C2 10 μF 0.1 uF VREF 10 μF IRF2807 IRF2807 0.47 μF 33 Ω 200 k Ω 33 Ω External +5 V IN IN Brake Forward M DC Motor PGND L P L L L L P P L P Application Block Diagrams Diagram A. Dependent drivers. Unidirectional motor control with braking and dead time. T DEAD = 1 μs; QTOTAL = 160 nC. |
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