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LTC3891 Datasheet(PDF) 3 Page - Linear Technology |
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LTC3891 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 26 page  LTC3630 3 3630fb ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = 12V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Input Supply (VIN) VIN Input Voltage Operating Range 4 65 V VOUT Output Voltage Operating Range 0.8 VIN V UVLO VIN Undervoltage Lockout VIN Rising VIN Falling Hysteresis l l 3.45 3.30 3.65 3.5 150 3.85 3.70 V V mV IQ DC Supply Current (Note 5) Active Mode Sleep Mode Shutdown Mode No Load VRUN = 0V 165 12 5 270 20 10 μA μA μA VRUN RUN Pin Threshold Voltage RUN Rising RUN Falling Hysteresis 1.17 1.06 1.21 1.10 110 1.25 1.14 V V mV Output Supply (VFB) VFB(ADJ) Feedback Comparator Threshold Voltage (Adjustable Output) VFB Rising, VPRG1 = VPRG2 = 0V LTC3630E, LTC3630I LTC3630H, LTC3630MP l l 0.792 0.788 0.800 0.800 0.808 0.812 V V VFBH Feedback Comparator Hysteresis (Adjustable Output) VFB Falling, VPRG1 = VPRG2 = 0V l 2.5 5 7 mV IFB Feedback Pin Current VFB = 1V, VPRG1 = 0V, VPRG2 = 0V –10 0 10 nA VFB(FIXED) Feedback Comparator Threshold Voltages (Fixed Output) VFB Rising, VPRG1 = SS, VPRG2 = 0V VFB Falling, VPRG1 = SS, VPRG2 = 0V l l 4.940 4.910 5.015 4.985 5.090 5.060 V V VFB Rising, VPRG1 = 0V, VPRG2 = SS VFB Falling, VPRG1 = 0V, VPRG2 = SS l l 3.260 3.240 3.310 3.290 3.360 3.340 V V VFB Rising, VPRG1 = VPRG2 = SS VFB Falling, VPRG1 = VPRG2 = SS l l 1.780 1.770 1.810 1.8 1.840 1.83 V V ΔVLINEREG Feedback Voltage Line Regulation VIN = 4V to 65V 0.001 %/V Operation IPEAK Peak Current Comparator Threshold ISET Floating 100k Resistor from ISET to GND ISET Shorted to GND l l l 1 0.45 0.09 1.2 0.6 0.12 1.4 0.75 0.15 A A A RON Power Switch On-Resistance Top Switch Bottom Switch ISW = –200mA ISW = 200mA 1.00 0.53 Ω Ω ILSW Switch Pin Leakage Current RUN = Open, VIN = 65V, SW = 0V 0.1 1 μA ISS Soft-Start Pin Pull-Up Current VSS < 2.5V 3 5 6 μA tINT(SS) Internal Soft-Start Time SS Pin Floating 0.8 ms 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 LTC3630 is tested under pulsed load conditions such that TJ ≈ TA. The LTC3630E is guaranteed to meet performance specifications from 0°C to 85°C. Specifications over the –40°C to 125°C operating junction temperature range are assured by design, characterization and correlation with statistical process controls. The LTC3630I is guaranteed over the –40°C to 125°C operating junction temperature range, the LTC3630H is guaranteed over the –40°C to 150°C operating junction temperature range and the LTC3630MP is tested and guaranteed over the –55°C to 150°C operating junction temperature range. High junction temperatures degrade operating lifetimes; operating lifetime is derated for junction temperatures greater than 125°C. Note that the maximum ambient temperature consistent with these specifications is determined by specific operating conditions in conjunction with board layout, the rated package thermal impedance and other environmental factors. Note 3: The junction temperature (TJ, in °C) is calculated from the ambient temperature (TA, in °C) and power dissipation (PD, in Watts) according to the formula: TJ = TA + (PD • θJA) where θJA is 43°C/W for the DFN or 45°C/W for the MSOP. |
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Similar Description - LTC3891 |
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