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ISL6731AFBZ Datasheet(PDF) 8 Page - Intersil Corporation |
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ISL6731AFBZ Datasheet(HTML) 8 Page - Intersil Corporation |
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8 / 20 page  ISL6731A, ISL6731B 8 FN8582.1 February 13, 2015 Submit Document Feedback GATE DRIVER Gate Drive Pull-Down Resistance VCC = 15V, IGATE = 15mA 2.33 4.46 Ω Gate Drive Pull-Up Voltage Drop VCC = 9V, IGATE = 15mA 0.15 0.3 0.45 V Gate Drive Max. Sourcing/Sinking Current 1.5 A Rise Time CO = 2.2nF, VCC = 15V, gate voltage rise time from 10% to 90% of VGC 34 62 ns Fall Time CO = 2.2nF, VCC = 15V, gate voltage fall time from 10% to 90% of VGC 34 57 ns Gate Clamp Voltage VGC 10.5 12 13.5 V VOLTAGE REFERENCE Reference Voltage VREF 2.48 2.5 2.52 V Feedback Pin Pull-Down Current IFB 65 nA Rising Threshold to Enable Converter FB_EN 280 300 320 mV Falling Threshold to Disable Converter FB_DIS 190 202 214 mV Enable Hysteresis FB_Hys 100 mV VOLTAGE ERROR AMPLIFIER Error Amp Transconductance Gmv 50 77 104 µA/V ISource/Sink 13 µA COMP Offset Voltage VCOMP_OFF 0.95 1.01 1.07 V COMP Soft-Start Enable Voltage VCOMP_EN 0.58 0.64 0.75 V INPUT VOLTAGE SENSING VIN Leakage Current 9nA MULTIPLIER GAIN GMUL COMP = 2.5V, VIN = 1.0V, BO = 1.0V, ISEN = 50µA 0.196 0.25 0.296 V/V CURRENT ERROR AMPLIFIER Current DC Gain AIDC IICOMP/IISEN 1.6 1.9 2.2 A/A Error Amp Transconductance Gmi IICOMP = ±20µA 205 268 331 µA/V ICOMP Source/Sink Current (Note 7) 60 µA Current Sensing Input Offset -3 2 7 mV LIGHT LOAD EFFICIENCY ENHANCEMENT AND OVERPOWER PROTECTION Skip Current Reference (Note 7)ISKIP VSKIP = 2V -23 -20 -17 µA Skip Falling Threshold VSKIP_THf 450 498 550 mV Skip Rasing Threshold VSKIP_THr 570 616 690 mV COMP Upper Limit VCUL 3.53 3.85 4.17 V COMP Valid Range VCUL-1V 2.5 2.83 3.16 V FB Exit Threshold Voltage VFB_EXIT Fraction of VREF, IISEN = 0µA 87 88 89 % ISEN Exit Threshold Current ISEN_EXIT VFB = 2.5V -38 -29 -20 µA Electrical Specifications Operating Conditions: VCC = 15V, TA = +25°C. Boldface limits apply across the operating temperature range, -40°C to +125°C. (Continued) PARAMETER SYMBOL TEST CONDITIONS MIN (Note 8)TYP MAX (Note 8)UNITS |
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