A4931METTR-T Allegro Microsystems Inc, A4931METTR-T Datasheet
A4931METTR-T
Specifications of A4931METTR-T
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A4931METTR-T Summary of contents
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Features and Benefits ▪ Drives 6 N-channel MOSFETs ▪ Synchronous rectification for low power dissipation ▪ Internal UVLO and thermal shutdown circuitry ▪ Hall element inputs ▪ PWM current limiting ▪ Dead time protection ▪ FG outputs ▪ Standby mode ...
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... A4931 Selection Guide Part Number A4931METTR-T 1500 pieces per reel Absolute Maximum Ratings Characteristic Load Supply Voltage Motor Phase Output Hall Input Logic Input Voltage Range Operating Ambient Temperature Maximum Junction Temperature Storage Temperature Thermal Characteristics Characteristic Package Thermal Resistance, Junction ...
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A4931 0.1 μF Lock CLD Detect HBIAS 2 kΩ HA+ 0.1 μF HALL HA- Commun- HB+ ication HALL Logic HB- HC+ HALL HC- FG1 FG2 BRAKEZ System DIR Logic ENABLE V IN GND Terminal List Number Name 1 HA+ Hall ...
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A4931 ELECTRICAL CHARACTERISTICS Characteristics Supply Voltage Range Motor Supply Current HBIAS HBIAS Current Limit Control Logic Logic Input Voltage Logic Input Current Input Pin Glitch Reject ENB Standby Pulse Propagation Delay HBIAS Wake-up Delay, Standby Mode Gate Drive High-Side Gate ...
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A4931 Logic States Table (See timing charts, below Don’t Care high impedance Condition – – DIR = 1 (Forward) D – – – ...
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A4931 Power-up and Standby Modes Timing Diagram VBB Charge Pump HBIAS Voltage ENB Power-up and Standby Modes Timing Diagram VBB V +7 Charge Pump 7.5V HBIAS Voltage ENB 3-Phase Brushless DC Motor Pre-Driver V BBUV Standby Mode Turn ...
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A4931 Load current is regulated by an internal Current Regulation fixed off-time PWM control circuit. When the outputs of the full bridge are turned on, current increases in the motor winding until it reaches a value given by: ...
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A4931 by holding ENB high for longer than 3 ms. Note that Brake mode overrides Standby mode, so hold the BRAKEZ pin high in order to enter Standby mode. The internal charge pump is used to generate a Charge Pump ...
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A4931 29X 0.08 C +0.05 0.25 –0.07 +0.20 0.55 –0. Copyright ©2007-2010, Allegro MicroSystems, Inc. The products described here are manufactured under one or more U.S. patents or U.S. patents pending. Allegro MicroSystems, Inc. reserves ...