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LTC4274 Datasheet(PDF) 4 Page - Linear Technology |
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LTC4274 Datasheet(HTML) 4 Page - Linear Technology |
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4 / 30 page  LTC4266A/LTC4266C 4 4266acfc SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Current Sense VCUT Overcurrent Sense Voltage VSENSEn – VEE hpen = 0Fh, cutn[5:0] ≥ 4 (Note 12) cutrng = 0 cutrng = 1 l l 9 4.5 9.38 4.69 9.75 4.88 mV/LSB mV/LSB Overcurrent Sense in AUTO Pin Mode Class 0, Class 3 Class 1 Class 2 Class 4 l l l l 90 26 49 152 94 28 52 159 98 30 55 166 mV mV mV mV VLIM Active Current Limit in 802.3af Compliant Mode VSENSEn – VEE, hpen = 0Fh, limn = 80h, VEE = 55V (Note 12) VEE < VOUT < AGND – 29V AGND – VOUT = 0V l l 102 20 106 110 50 mV mV VLIM Active Current Limit in High Power Mode hpen = 0Fh, limn = C0h, VEE = 55V VOUT – VEE = 0V to 10V VEE + 23V < VOUT < AGND – 29V AGND – VOUT = 0V l l l 204 100 20 212 106 221 113 50 mV mV mV VLIM Active Current Limit in AUTO Pin Mode VOUT – VEE = 0V to 10V, VEE = 55V Class 0 to Class 3 Class 4 l l 102 204 106 212 110 221 mV mV VMIN DC Disconnect Sense Voltage VSENSEn – VEE, rdis = 0 VSENSEn – VEE, rdis = 1 l l 2.6 1.3 3.8 1.9 4.8 2.41 mV mV VSC Short-Circuit Sense VSENSEn – VEE – VLIM, rdis = 0 VSENSEn – VEE – VLIM, rdis = 1 l l 160 75 200 100 255 135 mV mV Port Current ReadBack Resolution No Missing Codes, fast_iv = 0 14 Bits LSB Weight VSENSEn – VEE 30.5 μV/LSB 50Hz to 60Hz Noise Rejection (Note 7) 30 dB Port Voltage ReadBack Resolution No Missing Codes, fast_iv = 0 14 bits LSB Weight AGND – VOUTn 5.835 mV/LSB 50Hz to 60Hz Noise Rejection (Note 7) 30 dB Digital Interface VILD Digital Input Low Voltage ADn, RESET, MSD, SHDNn, AUTO, MID (Note 6) l 0.8 V I2C Input Low Voltage SCL, SDAIN (Note 6) l 0.8 V VIHD Digital Input High Voltage (Note 6) l 2.2 V Digital Output Low Voltage ISDAOUT = 3mA, IINT = 3mA ISDAOUT = 5mA, IINT = 5mA l l 0.4 0.7 V V Internal Pull-Up to VDD ADn, SHDNn, RESET, MSD 50 kΩ Internal Pull-Down to DGND AUTO, MID 50 kΩ ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. AGND – VEE = 54V, AGND = DGND, and VDD – DGND = 3.3V unless otherwise noted. (Notes 3, 4) |
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Similar Description - LTC4274 |
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