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UCC3919DTRG4 Datasheet(PDF) 4 Page - Texas Instruments |
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UCC3919DTRG4 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 27 page  UCC2919 UCC3919 SLUS374C − JULY 1999 − REVISED NOVEMBER 2005 4 www.ti.com electrical characteristics, VDD = 5 V, TA = 0°C to 70°C for the UCC3919, –40°C to 85°C for the UCC2919, all voltages are with respect to GND, TA = TJ, (unless otherwise specified) current sense PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Over current comparator offset Referred to CSP, 3 V ≤ VDD ≤ 8 V –55 –50 –45 mV Linear current amplifier offset VIMAX = 100 mV, referred to CSP, 3 V ≤ VDD ≤ 8 V –120 –100 –80 mV Linear current amplifier offset VIMAX = 400 mV, referred to CSP, 3 V ≤ VDD ≤ 8 V –440 –400 –360 mV Overload comparator offset VIMAX = 100 mV, referred to CSP, 3 V ≤ VDD ≤ 8 V –360 –300 –240 mV CSN input common mode voltage range Referred to VDD, 3 V ≤ VDD ≤ 8 V, See Note 1 –1.5 0.2 V CSP input common mode voltage range Referred to VDD, 3 V ≤ VDD ≤ 8 V, See Note 1 0 0.2 V Input bias current CSN 1 5 µA Input bias current CSP 100 200 µA current fault timer PARAMETER TEST CONDITIONS MIN TYP MAX UNITS CT charge current VCT = 1 V –56 –35 –16 µA CT discharge current VCT = 1 V 0.5 1.2 1.9 µA On time duty cycle in fault IPL = 0 1.5 3 6 % CT fault threshold 1.0 1.5 1.7 V CT reset threshold 0.25 0.5 0.75 V IMAX PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Input bias current VIMAX = 100 mV, referred to CSP –1 0 1 µA power limiting PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Voltage on PL IPL = –250 µA, referred to VDD –1.0 –1.4 –1.9 V Voltage on PL IPL = –1.5 mA, referred to VDD –0.5 –1.8 –2.2 V On time duty cycle in fault IPL = –250 µA 0.25 0.5 1 % On time duty cycle in fault IPL = –1.5 mA 0.05 0.1 0.2 % NOTES: 1. Ensured by design. Not 100% production tested. |
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