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LT3150 Datasheet(PDF) 2 Page - Linear Technology |
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LT3150 Datasheet(HTML) 2 Page - Linear Technology |
2 / 20 page 2 LT3150 3150f (Note 1) VIN1, SHDN1 Voltage .............................................. 10V SW Voltage .............................................. – 0.4V to 36V FB1 Voltage ................................................ VIN1 + 0.3V Current into FB1, FB2 Pin .................................... ±1mA VIN2, IPOS, INEG ....................................................... 22V SHDN2 .................................................................... VIN2 Operating Ambient Temperature Range ..... 0 °C to 70°C Junction Temperature (Note 2) ........................... 125 °C Storage Temperature Range ................ – 65 °C to 150°C Lead Temperature (Soldering, 10 sec)................. 300 °C ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO GN PACKAGE 16-LEAD PLASTIC SSOP 1 2 3 4 5 6 7 8 TOP VIEW 16 15 14 13 12 11 10 9 SW SWGND VIN1 SHDN2 VIN2 GND NC FB2 FB1 GND SHDN1 IPOS INEG GATE NC COMP ORDER PART NUMBER LT3150CGN GN PART MARKING 3150 TJMAX = 125°C, θJA = 130°C/W, θJC = 40°C/W Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN1 = 1.5V, VSHDN1 = VIN1, VIN2 = 12V, GATE = 6V, IPOS = INEG = 5V, VSHDN2 = 0.75V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Boost Switching Regulator VIN1 Minimum Operating Voltage 0.9 1.1 V VIN1 Maximum Operating Voltage 10 V VFB1 FB1 Reference Voltage q 1.20 1.23 1.255 V FB1 Input Bias Current Current Flows into Pin q 27 80 nA IQ1 VIN1 Quiescent Current VSHDN1 = 1.5V 3 4.5 mA VIN1 Quiescent Current in Shutdown VSHDN1 = 0V, VIN1 = 2V 0.01 0.5 µA VSHDN1 = 0V, VIN1 = 5V 0.01 1.0 µA FB1 Reference Line Regulation 1.5V ≤ VIN1 ≤ 10V 0.02 0.2 %/V Switching Frequency q 1 1.4 1.9 MHz Maximum Duty Cycle q 82 86 % Switch Current Limit (Note 3) 550 800 mA Switch VCESAT ISW = 300mA 300 350 mV Switch Leakage Current VSW = 5V 0.01 1 µA SHDN1 Input Voltage High 1 V SHDN1 Input Voltage Low 0.3 V SHDN1 Input Bias Current VSHDN1 = 3V, Current Flows into Pin 25 50 µA VSHDN1 = 0V, Current Flows into Pin 0.01 0.1 µA Linear Regulator Controller IQ2 VIN2 Quiescent Current q 512 19 mA VFB2 FB2 Reference Voltage 1.203 1.210 1.217 V q 1.198 1.210 1.222 V FB2 Line Regulation 10V ≤ VIN2 ≤ 20V q 0.01 0.03 %/V FB2 Input Bias Current FB2 = VFB2, Current Flows out of Pin q –0.6 –4 µA |
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