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LTC4230IGN 数据表(PDF) 2 Page - Linear Technology |
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LTC4230IGN 数据表(HTML) 2 Page - Linear Technology |
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2 / 36 page  2 LTC4230 4230f SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VCC Supply Voltage (VCC1) q 2.700 16.5 V Supply Voltage (VCC2)VCC2 ≤ VCC1 q 2.375 16.5 V Supply Voltage (VCC3)VCC3 ≤ (VCC1 – 1V) q 1.700 15.5 V ICC Supply Current (ICC1) ON = VCC1, FB1 = High q 1.8 3 mA Supply Current (ICC2) ON = VCC1, FB2 = High q 75 150 µA Supply Current (ICC3) ON = VCC1, FB3 = High q 65 150 µA VLKO1 Undervoltage Lockout , Channel 1 VCC1 Low to High Transition q 2.15 2.35 2.52 V VLKO2 Undervoltage Lockout , Channel 2 VCC2 Low to High Transition q 1.98 2.15 2.32 V VLKO3 Undervoltage Lockout , Channel 3 VCC3 Low to High Transition q 1.09 1.19 1.29 V VLKOHST1 Undervoltage Lockout Hysteresis, Channel 1 100 mV VLKOHST2 Undervoltage Lockout Hysteresis, Channel 2 45 mV VLKOHST3 Undervoltage Lockout Hysteresis, Channel 3 35 mV IIN, FBn FB n Pin Input Current 0V ≤ VFBn ≤ VCCn q ±0.1 ±10 µA IIN, ON ON Pin Input Current 0V ≤ VON ≤ VCC1 q ±0.1 ±10 µA IIN, SENSEn Input Current for SENSE n 0V ≤ VSENSEn ≤ VCCn q ±0.1 ±15 µA VCB(FAST) Circuit Breaker n Trip Voltage Fast Comparator q 135 150 165 mV VCB(SLOW) Slow Comparator q 40 50 60 mV IGATEn, UP GATE n Pull-Up Current Charge Pump On, 0 ≤ VGATEn < 0.2V q –12.5 –10 –6.5 µA IGATEn, DN Normal GATE n Pull-Down Current ON Low, VGATEn = 5V 200 µA Fast GATE n Pull-Down Curent FAULT Latched and Circuit Breaker 16 mA Tripped or in UVLO, VGATEn = 5V ILEAK RESET n Leakage Current VRESETn = 15V, Pull-Down Device Off q ±0.1 ±2.5 µA TJMAX = 125°C, θJA = 95°C/ W ORDER PART NUMBER Supply Voltage (VCCn) ............................................. 17V SENSE n Pins ............................... – 0.3V to (VCC + 0.3V) FB n, ON Pins ............................... – 0.3V to (VCC + 0.3V) TIMER Pin ...................................................– 0.3V to 2V GATE n Pins ........................... Internally Limited (Note 3) RESET n, FAULT, FILTER Pins ....................– 0.3V to 17V Operating Temperature Range LTC4230C ............................................... 0 °C to 70°C LTC4230I ............................................ – 40 °C to 85°C Storage Temperature Range ................. – 65 °C to 150°C Lead Temperature (Soldering, 10 sec).................. 300 °C LTC4230CGN LTC4230IGN ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1) The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C. VCC1 = 3.3V, VCC2 = 2.5V,VCC3 = 1.8V unless otherwise noted. (Note 2) ELECTRICAL CHARACTERISTICS Consult LTC Marketing for parts specified with wider operating temperature ranges. 1 2 3 4 5 6 7 8 9 10 TOP VIEW GN PACKAGE 20-LEAD PLASTIC SSOP 20 19 18 17 16 15 14 13 12 11 FB3 RESET 3 GATE 3 SENSE 3 VCC3 VCC1 SENSE 1 GATE 1 RESET 1 FB1 FB2 RESET 2 GATE 2 SENSE 2 VCC2 ON GND FAULT TIMER FILTER |
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