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A3942 Datasheet(PDF) 6 Page - Allegro MicroSystems |
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A3942 Datasheet(HTML) 6 Page - Allegro MicroSystems |
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6 / 20 page  Quad High-Side Gate Driver for Automotive Applications A3942 6 Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com Characteristics Symbol Test Conditions Min. Typ. Max. Units Driver Fault Detection Drain Fault Detect Current IDx VBB = 60 V 75 100 125 μA VBB = 36 V 85 100 120 μA Drain Fault Detect Voltage3 VDx VBB ≥ 9 V VBB – 3 – VBB + 0.2 V VBB = 6 V 5 – VBB + 0.2 V VBB = 4.5 V 4 – VBB + 0.2 V Open Load Detect Source Current1 IOL VSx = 1.35 V; 4.5 V ≤ VBB ≤ 36 V –48 – –82 μA Open Load Detect Voltage VOL 1.4 1.5 1.6 V Open Load VSx Clamp VCLAMP Active (when an open load fault is active), VBB ≤ 36 V ––5 V ICLAMP Current limit in short-to-battery; VSx =VBB = 36 V – – 200 μA Turn-On Blank Time tON(00) tON(00) is the default, TJ = 150°C 2.5 – 3.4 μs tON(01) 3.7 – 5.9 μs tON(10) 5.6 – 11.2 μs tON(11) 8.9 – 22.3 μs Turn-Off Blank Time tOFF –tON – μs Short-to-Ground Fault Detect Filter Delay tSTG From VSx < VDx to 90% VFAULTZ – 1 1.2 μs STB Comparator Offset Voltage VOS(STB) – – 60 mV STG Comparator Offset Voltage VOS(STG) – – 45 mV Temperature Monitor Thermal Warning Threshold4 TWARN Temperature rising 155 165 175 °C Thermal Warning Hysteresis TWARN(hys) –15– °C 1For input and output current specifications, negative current is defined as coming out of (sourcing) the specified device pin. 2For IG(HI), VCP relative to VBB. 3Minimum values of VDx are specified only to avoid short-to-battery nuisance faults. For more information, refer to the Open Load Fault Level topic in the Applications Information section. 4Minimum and maximum not tested; guaranteed by design. ELECTRICAL CHARACTERISTICS (continued) Valid at –40°C ≤ TJ ≤ 150°C, C12 = C34 = 0.47 μF, CCP = 1 μF, RREF = 60.4 kΩ, and VBB within limits, unless otherwise noted |
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