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A3982 Datasheet(PDF) 4 Page - Allegro MicroSystems |
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A3982 Datasheet(HTML) 4 Page - Allegro MicroSystems |
4 / 10 page DMOS Stepper Motor Driver with Translator A3982 4 Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com ELECTRICAL CHARACTERISTICS1 at TA = 25°C, VBB = 35 V (unless otherwise noted) 1Negative current is defined as coming out of (sourcing from) the specified device pin. 2Typical data are for initial design estimations only, and assume optimum manufacturing and application conditions. Performance may vary for individual units, within the specified maximum and minimum limits. 3errI = (ITrip – IProg) ⁄ IProg, where IProg = %ITripMAX ×I TripMAX. Characteristics Symbol Test Conditions Min. Typ.2 Max. Units Output Drivers Load Supply Voltage Range VBB Operating 8 – 35 V Logic Supply Voltage Range VDD Operating 3.0 – 5.5 V Output On Resistance RDSON Source Driver, IOUT = –1.5 A – 0.370 0.460 Ω Sink Driver, IOUT = 1.5 A – 0.330 0.380 Ω Body Diode Forward Voltage VF Source Diode, IF = –1.5 A – – 1.2 V Sink Diode, IF = 1.5 A – – 1.2 V Motor Supply Current IBB fPWM < 50 kHz – – 4 mA Operating, outputs disabled – – 2 mA Logic Supply Current IDD fPWM < 50 kHz – – 8 mA Outputs off – – 5 mA Control Logic Logic Input Voltage VIN(1) VDD×0.7 –– V VIN(0) –– VDD×0.3 V Logic Input Current IIN(1) VIN = VDD×0.7 –20 <1.0 20 μA IIN(0) VIN = VDD×0.3 –20 <1.0 20 μA Input Hysteresis VHYS(IN) 150 300 500 mV Blank Time tBLANK 0.7 1 1.3 μs Fixed Off-Time tOFF OSC > 3 V 20 30 40 μs ROSC = 25 kΩ 23 30 37 μs Reference Input Voltage Range VREF 0–4 V Reference Input Current IREF –3 0 3 μA Current Trip-Level Error3 errI VREF = 2 V, %ITripMAX = 70.71% – – ±5 % VREF = 2 V, %ITripMAX = 100.00% – – ±5 % Crossover Dead Time tDT 100 475 800 ns Protection Thermal Shutdown Temperature TJ – 165 – °C Thermal Shutdown Hysteresis TJHYS –15–°C UVLO Enable Threshold UVLO VDD rising 2.35 2.7 3 V UVLO Hysteresis UVHYS 0.05 0.10 – V |
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