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LTC4367 数据表(PDF) 3 Page - Analog Devices |
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LTC4367 数据表(HTML) 3 Page - Analog Devices |
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3 / 22 page  LTC4249 3 Rev. 0 For more information www.analog.com ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Channel Inputs (IN1, IN2) VIN1 IN1 Operating Range l 6 65 V VIN2 IN2 Operating Range VIN1 ≥ 6V l 1.5 65 V IMAX IN1, IN2 Maximum Steady State ECB Current 1.2 A IIN1 IN1 Input Supply Current IOUT1 = IOUT2 = 0A; EN1 = EN2 = 3.3V IOUT1 = IOUT2 = 0A; EN1 = EN2 = GND l l 1 0.6 1.5 0.8 mA mA IIN2 IN2 Input Supply Current IOUT2 = 0A, EN2 = 3.3V IOUT2 = 0A, EN2 = GND l l 20 0.5 28 3 µA µA RON ECB On-Resistance IOUT = –1A l 50 75 150 mΩ RONM ECB Channel to Channel RON Matching IOUT = –1A l ±1 ±4 % Channel Outputs (OUT1, OUT2) ICL ECB Turn-On Inrush Current COUT = 100µF l –0.8 –1 –1.2 A tCL Inrush Current Limited Operating Time l 8 10 12 ms VSC Short-Circuit Comparator Threshold l 1.14 1.2 1.26 V tSC Short-Circuit Evaluation Delay EN rising to short-circuit fault l 240 300 360 µs Current Monitor and Electronic Circuit Breaker (ECB) Thresholds (IMON1, IMON2) GIMON IMON Gain IOUT = –30mA to –1.2A l 95 100 105 µA/A IOC IMON Offset Current IOUT = –30mA ±1 µA VIMON IMON Output Voltage IOUT = –1A l 950 1000 1050 mV IACC IMON Output Current Accuracy IOUT = –1A IOUT = –1A, TA = 25°C l ±5 ±2 % % VECB1 VIMON at Primary ECB Threshold l 1.17 1.20 1.23 V VACC1 Primary ECB Accuracy l ±2.5 % VECB2 VIMON at Secondary ECB Threshold l 2.28 2.40 2.52 V VACC2 Secondary ECB Accuracy l ±5 % tOC1 ECB Response Time to Primary OC Step IOUT from –1.15A to –1.25A; measure time from step to RDY Low l 30 50 70 µs tOC2 ECB Response Time to Secondary OC Step IOUT from –0.5A to –2.5A; measure time from step to RDY Low TA > 0°C TA < 0°C 2 4 4 18 µs µs Enable Inputs (EN1, EN2) VENTH EN Rising Threshold l 780 800 820 mV VENHYS EN Threshold Hysteresis EN Falling 35 mV tENMIN Minimum EN Input Pulse Width l 10 µs The l denotes specifications that apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN1 = VIN2 = 52V and RIMON = 10kΩ unless otherwise specified. |
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