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A4934GLPTR-T Datasheet(PDF) 4 Page - Allegro MicroSystems |
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A4934GLPTR-T Datasheet(HTML) 4 Page - Allegro MicroSystems |
4 / 9 page ELECTRICAL CHARACTERISTICS Valid at TA = 25°C, VBB = 12 V; unless otherwise noted Characteristics Symbol Test Conditions Min. Typ. Max. Unit VBB Supply Current IBB – 2.5 5 mA IBBST Standby mode, PWM = 0 V, SLEW = FC = O/C – 25 50 μA Total Driver RDS(on) (Sink + Source) RDS(on) I = 800 mA, TJ = 25°C – 750 mΩ Overcurrent Threshold VOCL 180 200 220 mV PWM Low Level VIL ––2 V PWM High Level VIH 0.8 – – V Input Hysteresis VHYS – 300 – mV Logic Input Current IIN PWM, FC VIN = 0 V – –20 – μA SLEW – –50 – μA Output Saturation Voltage VSAT I = 5 mA – – 0.3 V FG Output Leakage IFG V = 16 V – – 1 μA Protection Circuitry Lock Protection ton –2– s toff –5– s Thermal Shutdown Temperature TJTSD Temperature increasing 150 165 180 °C Thermal Shutdown Hysteresis TJHYS Recovery = TJTSD – ∆TJ –15–°C VBB Undervoltage Lockout (UVLO) VUVLO VBB rising – 6.3 – V VBB Undervoltage Lockout (UVLO) Hysteresis VUVLOHYS – 0.56 – V Three-Phase Sensorless Fan Driver A4934 3 Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com |
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