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LT4180IGN-TRPBF Datasheet(PDF) 3 Page - Linear Technology |
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LT4180IGN-TRPBF Datasheet(HTML) 3 Page - Linear Technology |
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3 / 16 page  LT4180 3 4180fp ELECTRICAL CHARACTERISTICS Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2. The LT4180E is guaranteed to meet performance specifications from 0°C to 125°C junction temperature. Specifications over the –40°C The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C, VIN = SENSE = 5V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VINTVCC LDO Regulator Output Voltage in Dropout VIN = 2.5V 2.2 V VOV Overvoltage Threshold Rising 1.21 V VOHYST Overvoltage Input Hysteresis VRISING – VFALLING 20 80 mV VRUN Run Threshold Falling 1.21 V VRHYST Run Input Hysteresis VRISING – VFALLING 20 80 mV IFB Input Bias Current –0.2 0.2 μA VOS Current Amplifier Offset Voltage VIN = 3.5V VIN = 5V VIN = 48V –4 –3 –4 4 3 4 mV mV mV AV(RATIO) Current Amplifier Gain Ratio AVL/AVH, AV Measured in V/V 0.891 0.9 0.909 ISENSE Current Amplifier Input Bias Current Measured at SENSE with SENSE = VIN –1 1 μA AV ΔVFB Amplifier Gain 9.7 10 10.3 V/V ICHOLD1 Track/Hold Charging Current Measured at CHOLD1 with VCHOLD1 = 1.2V ±60 μA ICHOLD2 Track/Hold Charging Current Measured at CHOLD2 with VCHOLD2 = 1.2V ±25 μA ICHOLD3 Track/Hold Charging Current Measured at CHOLD3 with VCHOLD3 = 1.2V ±25 μA ICHOLD4 Track/Hold Charging Current Measured at CHOLD4 with VCHOLD4 = 1.5V, VCHOLD2 = 1V, VCHOLD3 = 1.2V 10 μA Measured at CHOLD4 with VCHOLD4 = 1.5V, VCHOLD2 = 1.4V, VCHOLD3 = 1.2V –200 μA ISC Soft-Correct Current Measured at CHOLD4 ±1.5 μA ILKG1 Track/Hold Leakage Current Measured at CHOLD1 with VCHOLD1 = 1.2V ±1 μA ILKG2 Track/Hold Leakage Current Measured at CHOLD2 with VCHOLD2 = 1.2V ±1 μA ILKG3 Track/Hold Leakage Current Measured at CHOLD3 with VCHOLD3 = 1.2V ±1 μA ILKG4 Track/Hold Leakage Current Measured at CHOLD4 with VCHOLD4 = 1.2V ±1 μA fOSC Oscillator Frequency ROSC = 20k, COSC = 1nF 170 200 230 kHz gmFB Voltage Error Amplifier Transconductance Measured from FB to COMP, VCOMP = 2V, OSC Stopped with Voltage Feedback Loop Closed 110 μmho gmIAMP Current Amplifier Transconductance Measured from SENSE to COMP, VCOMP = 2V, OSC Stopped with Current Feedback Loop Closed 750 μmho to 125°C operating junction temperature range are assured by design characterization and correlation with statistical process controls. The LT4180I is guaranteed over the full –40°C to 125°C operating junction temperature range. The LT4180MP is guaranteed over the full –55°C to 125°C operating junction temperature range. Note 3. Positive current is defined as flowing into a pin. |
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