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LTM8083 Datasheet(PDF) 3 Page - Analog Devices |
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LTM8083 Datasheet(HTML) 3 Page - Analog Devices |
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3 / 24 page  LTM8083 3 Rev. 0 For more information www.analog.com 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 LTM8083E is guaranteed to meet performance specifications from 0°C to 125°C operating junction temperature. Specifications over the –40°C to 125°C operating junction temperature range are assured by design, characterization and correlation with statistical process controls. The LTM8083I is guaranteed over the –40°C to 125°C operating junction temperature range. Note 3: The LTM8083 includes overtemperature protection that is intended to protect the device during momentary overload conditions. Junction temperature will exceed 150°C when overtemperature protection is active. Continuous operation above the specified absolute maximum operating junction temperature may impair device reliability or permanently damage the device. Note 4: See output current derating curves for different VIN, VOUT and TA. The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = SVIN = 12V, VEN/UVLO = 1.5V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Minimum Input Voltage VIN = SVIN l 3 V Output DC Voltage RFBtop = 113kΩ, RFBbottom open RFBtop = 113kΩ, RFBbottom = 10kΩ RFBtop = 113kΩ, RFBbottom = 3.24kΩ 1 12 36 V V V Output DC Current VIN = 6V, VOUT = 12V VIN = 12V, VOUT = 12V VIN = 36V, VOUT = 12V 0.8 1.5 1.5 A A A Quiescent Current into VIN EN/UVLO = 0V (Shutdown) EN/UVLO = 1.5V, VOUT = 12V, IOUT = 0A 0.9 2.6 µA mA Output Voltage Line Regulation 3V < VIN < 36V, VOUT = 12V, IOUT = 0.1A l 0.02 0.15 %/V Output Voltage Load Regulation VOUT = 12V, 0.0A < IOUT < 1.5A (Note 4) l 0.5 1.5 % Output Voltage Ripple VOUT = 12V, IOUT = 0A 10 mV Switching Frequency RT = 178kΩ RT = 14.3kΩ 300 2000 kHz kHz Voltage at FB pin l 0.985 1 1.015 V EN/UVLO Rising Threshold Starts Switching (UVLO) 1.240 V EN/UVLO Falling Threshold Stops Switching (UVLO) l 1.190 1.210 1.230 V ENUVLO Shutdown Threshold INTVCC = Disabled l 0.3 0.6 0.9 V EN/UVLO Pin Current EN/UVLO = 0.3V EN/UVLO = 1.1V EN/UVLO = 1.3V –1 2.0 –0.3 0 2.5 0 1 3.0 0.3 µA µA µA OVLO Rising Threshold l 1.196 1.235 1.250 V OVLO Falling Threshold 1.055 1.120 1.140 V ISN Pin Current VISP = VISN = 12V VISP = VISN = 0V 23 –10 µA µA ISP Pin Current VISP = VISN = 12V VISP = VISN = 0V 23 –10 µA µA ISP-ISN Current Sense Threshold VCTRL = Float VCTRL = 0.75V 96 40 105 52 116 65 mV mV ISMON Voltage VISP = 100mV, VISN = 0V 1.20 1.25 1.30 V SS Pull-Up Current VFB = 0.8V, VSS = 0V 32 µA SS Pull-Down Current VFB = 1V, VSS = 2V 1.25 µA SYNC input Low Threshold 0.4 V SYNC input High Threshold 1.5 V SYNC Pin Current –0.1 0 0.1 µA |
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