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A3935KLQ Datasheet(PDF) 4 Page - Allegro MicroSystems |
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A3935KLQ Datasheet(HTML) 4 Page - Allegro MicroSystems |
4 / 15 page 3935 THREE-PHASE POWER MOSFET CONTROLLER 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 4 ELECTRICAL CHARACTERISTICS: unless otherwise noted at T J = -40°C to +150°C, VBAT = 7 V to 16 V, V DD = 4.75 V to 5.25 V, ENABLE = 22.5 kHz, 50% Duty Cycle, Two Phases Active. Limits Characteristics Symbol Conditions Min Typ Max Units Power Supply V DD Supply Current I DD All logic inputs = 0 V – – 7.0 mA V BAT Supply Current I BAT All logic inputs = 0 V – – 3.0 mA Battery Voltage Operating Range V BAT 7.0 – 40 V Bootstrap Diode Forward Voltage V DBOOT I DBOOT = -Icx = 10 mA, VDBOOT = VREG – VCX 0.8 – 2.0 V I DBOOT = -Icx = 100 mA 1.5 – 2.3 V Bootstrap Diode Resistance r DBOOT r D(100 mA) = [VD(150 mA) – VD(50 mA)]/100 mA 2.5 – 7.5 Ω Bootstrap Diode Current Limit I DM 3 V < [V REG – VCX] < 12 V -150 – -1150 mA Bootstrap Quiescent Current I CX V CX = 40 V, GHx = ON 10 – 30 µA Bootstrap Refresh Time t refresh V SX = low to guarantee ∆V = +0.5 V refresh of – – 2.0 µs 0.47 µF Boot Cap at V cx – Vsx = +10 V VREG Output Voltage 1 V REG V BAT = 7 V to 40 V, VBOOST from Boost Reg 12.7 – 14 V VREG Dropout Voltage 2 V REGDO V REGDO = Vboost – Vreg, Ireg = 40 mA – 0.9 – V Gate Drive Avg. Supply Current I REG No external dc load at VREG, C REG = 10 µF – – 40 mA VREG Input Bias Current I REGBIAS Current into V BOOST, ENABLE = 0 – – 4.0 mA Boost Supply V BOOST Output Voltage Limit V BOOSTM V BAT = 7 V 14.9 – 16.3 V V BOOST Output Volt. Limit Hyst. ∆V BOOSTM 35 – 180 mV Boost Switch ON Resistance r DS(on) I BOOSTD < 300 mA – 1.4 3.3 Ω Max. Boost Switch Current I BOOSTSW – – 300 mA Boost Current Limit Threshold Volt. V BI(th) Increasing V BOOSTS 0.45 – 0.55 V OFF Time t off 3.0 – 8.0 µs Blanking Time t blank 100 – 220 ns NOTES: Typical Data and Typical Characteristics are for design information only. Negative current is defined as coming out of (sourcing) the specified device terminal. 1. For V BOOSTM < VBOOST < 40 V power dissipation in the VREG LDO increases. Observe TJ < 150 °C limit. 2. With V BOOST decreasing Dropout Voltage measured at VREG = VREGref – 200 mV where VREG(ref) = VREG at VBOOST = 16 V. Continued next page … |
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