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UCC38050 Datasheet(PDF) 4 Page - Texas Instruments |
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UCC38050 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 30 page UCC28050, UCC28051 UCC38050, UCC38051 SLUS515F−SEPTEMBER 2002 − REVISED MARCH 2009 4 www.ti.com ELECTRICAL CHARACTERISTICS TA = 0_C to 70_C for the UCC3805x, –40_C to 105_C for the UCC2805x, TA = TJ, VCC = 12 V. supply PARAMETER TEST CONDITIONS MIN TYP MAX UNITS VCC operating voltage 18 V Shunt voltage IVCC = 25 mA 18 19 20 V Supply current, off VCC = VCC turn−on threshold –300 mV 75 125 µA Supply current, disabled VO_SNS = 0.5 V 2 4 Supply current, on 75 kHz, CL = 0 nF 4 6 mA Supply current, dynamic operating 75 kHz, CL = 1 nF 5 7 mA UVLO PARAMETER TEST CONDITIONS MIN TYP MAX UNITS VCC turn-on threshold UCCx8050 15.4 15.8 16.4 VCC turn-on threshold UCCx8051 12.0 12.5 13.0 VCC turn-off threshold 9.4 9.7 10.0 V UVLO hysteresis UCCx8050 5.8 6.3 6.8 V UVLO hysteresis UCCx8051 2.3 2.8 3.3 voltage amplifier (VO_SNS) PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Input voltage (VREF) UCC3805x 2.46 2.50 2.54 V Input voltage (VREF) UCC2805x 2.45 2.50 2.55 V Input bias current 0.5 µA VCOMP high VO_SNS = 2.1 V 4.5 5.5 V VCOMP low VO_SNS = 2.55 V 1.80 2.45 V gM TJ = 25 _C, VCOMP= 3.5 V 60 90 130 µS Source current UCCx8050 VO_SNS = 2.1 V, VCOMP= 3.5 V −0.2 −1.0 mA Source current UCCx8051 VO_SNS = 2.1 V, VCOMP= 2.5 V −200 −300 −400 µA Sink current VO_SNS = 2.7 V VCOMP= 3.5 V 0.2 1.0 mA over voltage protection / enable PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Overvoltage reference UCCx8050 VREF + 0.165 VREF + 0.190 VREF + 0.210 V Overvoltage reference UCCx8051 VREF + 0.150 VREF + 0.180 VREF + 0.210 V Hysteresis UCCx8050 175 200 225 mV Hysteresis UCCx8051 150 180 210 mV Enable threshold UCCx8050 0.62 0.67 0.72 V Enable threshold UCCx8051 0.18 0.23 0.28 V Enable hysteresis 0.05 0.10 0.20 V multiplier PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Multiplier gain constant (k) VMULTIN = 0.5 V, COMP = 3.5 V 0.43 0.65 0.87 1/V Dynamic input range, VMULTIN INPUT 0 to 2.5 0 to 3.5 V Dynamic input range, COMP INPUT 2.5 to 3.8 2.5 to 4.0 V Input bias current, MULTIN 0.1 1.0 µA |
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