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LTC4253A-ADJ Datasheet(PDF) 3 Page - Linear Technology |
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LTC4253A-ADJ Datasheet(HTML) 3 Page - Linear Technology |
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3 / 32 page  LTC4253A-ADJ 3 4253a-adjf ISEL SEL Input Current VSEL = 0V (Sourcing) ● 10 20 40 µA VSEL = VIN ● ±0.1 ±10 µA VCB Circuit Breaker Current Limit Voltage VCB = (VSENSE – VEE) ● 45 50 55 mV VACL Analog Current Limit Voltage x% VACL = (VSENSE – VEE), SS = Open or 1.4V ● 105 120 138 % VCB Circuit Breaker Current Limit Voltage VFCL Fast Current Limit Voltage VFCL = (VSENSE – VEE) ● 150 200 300 mV VSS SS Voltage After End of SS Timing Cycle ● 1.25 1.4 1.55 V ISS SS Pin Current UV = UVL = OV = OVL = 4V, ● 16 28 40 µA VSENSE = VEE, VSS = 0V (Sourcing) UV = UVL = OV = OVL = 0V, 28 mA VSENSE = VEE, VSS = 1V (Sinking) RSS SS Output Impedance 50 k Ω VOS Analog Current Limit Offset Voltage 10 mV VACL + VOS Ratio (VACL + VOS) to SS Voltage 0.05 V/V VSS IGATE GATE Pin Output Current UV = UVL = OV = OVL = 4V, VSENSE = VEE, ● 30 50 70 µA VGATE = 0V (Sourcing) UV = UVL = OV = OVL = 4V, VSENSE – VEE = 0.15V, 17 mA VGATE = 3V (Sinking) UV = UVL = OV = OVL = 4V, VSENSE – VEE = 0.3V, 190 mA VGATE = 1V (Sinking) VGATE External MOSFET Gate Drive VGATE – VEE, IIN = 2mA ● 10 12 VZ V VGATEL Gate Low Threshold (Before Gate Ramp Up) 0.5 V VGATEH Gate High Threshold VGATEH = VIN – VGATE, 2.8 V For PWRGD1, PWRGD2, PWRGD3 Status VUVHI UV Pin Threshold UV Low to High ● 3.05 3.08 3.11 V VUVLO UVL Pin Threshold UVL High to Low ● 3.05 3.08 3.11 V VOVHI OV Pin Threshold OV Low to High ● 5.04 5.09 5.14 V VOVLO OVL Pin Threshold OVL High to Low ● 5.025 5.08 5.135 V ISENSE SENSE Pin Input Current UV = UVL = OV = OVL = 4V, VSENSE = 50mV (Sourcing) ● 15 30 µA IINP UV, UVL, OV, OVL Pin Input Current UV = UVL = OV = OVL = 4V ● ±0.1 ±1 µA VTMRH TIMER Pin Voltage High Threshold ● 3.5 4 4.5 V VTMRL TIMER Pin Voltage Low Threshold ● 0.8 1 1.2 V ITMR TIMER Pin Current Timer On (Initial Cycle/Latchoff, Sourcing), VTMR = 2V ● 357 µA Timer Off (Initial Cycle, Sinking), VTMR = 2V 28 mA Timer On (Circuit Breaker, Sourcing, ● 120 200 280 µA IDRN = 0µA), VTMR = 2V Timer On (Circuit Breaker, Sourcing, 600 µA IDRN = 50µA), VTMR = 2V Timer Off (Circuit Breaker, Sinking), VTMR = 2V ● 357 µA ∆ITMRACC (ITMR at IDRN = 50µA – ITMR at IDRN = 0µA) Timer On (Circuit Breaker with IDRN = 50µA) ● 789 µA/µA ∆IDRN 50 µA VSQTMRH SQTIMER Pin Voltage High Threshold ● 3.5 4 4.5 V VSQTMRL SQTIMER Pin Voltage Low Threshold 0.33 V SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 2) |
Similar Part No. - LTC4253A-ADJ_15 |
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Similar Description - LTC4253A-ADJ_15 |
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