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LTC4258 Datasheet(PDF) 7 Page - Linear Technology |
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LTC4258 Datasheet(HTML) 7 Page - Linear Technology |
7 / 42 page LTC4278 7 4278fc TEMPERATURE (°C) –50 8 9 25 75 4278 G12 7 6 –25 0 50 100 125 5 4 3 10 DYNAMIC CURRENT CPG = 1nF, CSG = 1nF, fOSC = 100kHz STATIC PART CURRENT VCC = 14V TEMPERATURE (°C) –50 90 92 96 98 100 110 104 0 50 75 4278 G13 94 106 108 102 –25 25 100 125 FB = 1.1V SENSE = VSENSE+ WITH VSENSE– = 0V TEMPERATURE (°C) –50 215 25 4278 G14 200 190 –25 0 50 185 180 220 210 205 195 75 100 125 SENSE = VSENSE+ WITH VSENSE– = 0V TEMPERATURE (°C) –50 90 92 96 98 100 110 104 0 50 75 4278 G15 94 106 108 102 –25 25 100 125 COSC = 100pF TEMPERATURE (°C) –50 1.230 1.231 1.233 1.234 1.235 1.240 1.237 0 50 75 4278 G16 1.232 1.238 1.239 1.236 –25 25 100 125 TEMPERATURE (°C) –50 200 250 300 25 75 4278 G17 150 100 –25 0 50 100 125 50 0 RCMP OPEN TEMPERATURE (°C) –50 1.03 25 4278 G18 1.00 0.98 –25 0 50 0.97 0.96 1.04 1.02 1.01 0.99 75 100 125 TYPICAL PERFORMANCE CHARACTERISTICS VCC Shutdown Current vs Temperature VCC Current vs Temperature SENSE Voltage vs Temperature SENSE Fault Voltage vs Temperature Oscillator Frequency vs Temperature VFB vs Temperature Feedback Pin Input Bias vs Temperature VFB Reset vs Temperature TEMPERATURE (°C) –50 60 80 90 25 75 4278 G02 40 50 70 30 20 –25 0 50 100 125 10 0 VCC = 14V VUVLO = 0 VFB (V) 0.9 –70 –50 –30 –10 70 30 1 1.1 1.4 50 10 1.2 1.3 1.5 4278 G19 125°C 25°C –40°C Feedback Amplifier Output Current vs VFB |
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