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A8904SLBTR-T Datasheet(PDF) 2 Page - Allegro MicroSystems |
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A8904SLBTR-T Datasheet(HTML) 2 Page - Allegro MicroSystems |
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2 / 18 page  3-Phase Brushless DC Motor Controller/Driver with Back EMF Sensing A8904 2 Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com Absolute Maximum Ratings Characteristic Symbol Notes Rating Units Load Supply Voltage VBB 15 V Logic Supply Voltage VDD 7V Logic Input Voltage Range VIN Continuous –0.3 to VDD + 0.3 V tw < 30 ns –1.0 to VDD + 1.0 V Output Current IOUT Output current rating may be restricted to a val- ue determined by system concerns and factors. These include: system duty cycle and timing, ambient temperature, and use of any heatsink- ing and/or forced cooling. For reliable operation, the specified maximum junction temperature should not be exceeded. ±1.4 A Peak Output Current (Brake) IOUT(BRK) ±3.0 A IOUT(BRK) Period tfIOUT(BRK) Fall of IOUT(BRK) from ±3.0 A to ±1.4 A Peak output current is a transient condition that occurs during braking when the motor acts as a generator. The 3 A level is based on the maxi- mum peak of a sine wave that is damped. The maximum period between the initial brake being applied and the current through the drivers fall- ing to 1.4 A should not exceed 800 ms. See the Braking section for more information. 800 A Operating Ambient Temperature TA Range S –20 to 85 ºC Maximum Junction Temperature TJ(max) Fault conditions that produce excessive junc- tion temperature will activate device thermal shutdown circuitry. These conditions can be tolerated, but should be avoided. 150 ºC Storage Temperature Tstg –55 to 150 ºC Selection Guide Part Number Package Packing A8904SLBTR-T 24-pin SOIC 450 per reel A8904SLPTR-T 28-pin TSSOP 4000 per reel |
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