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LT1071HVMK Datasheet(PDF) 4 Page - Linear Technology |
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LT1071HVMK Datasheet(HTML) 4 Page - Linear Technology |
4 / 12 page 4 LT1070/LT1071 TYPICAL PERFORMANCE CHARACTERISTICS Switch Current Limit vs Duty Cycle DUTY CYCLE (%) 0 16 14 12 10 8 6 4 2 0 80 1070/71 G01 20 40 60 100 70 10 30 50 90 FOR LT1071, DIVIDE VERTICAL SCALE BY 2 –55 °C 125 °C 25 °C Flyback Blanking Time JUNCTION TEMPERATURE ( °C) –75 1.0 1.2 1.6 1.8 2.0 –25 25 50 150 1070/71 G03 1.4 –50 0 75 100 125 2.2 JUNCTION TEMPERATURE ( °C) –75 90 91 93 94 95 –25 25 50 150 1070/71 G02 92 –50 0 75 100 125 96 Maximum Duty Cycle Minimum Input Voltage TEMPERATURE ( °C) –75 2.3 2.4 2.6 2.7 2.8 –25 25 50 150 1070/71 G04 2.5 –50 0 75 100 125 2.9 SWITCH CURRENT = 5A SWITCH CURRENT = 0A Switch Saturation Voltage SWITCH CURRENT (A) 0 0.8 1.2 8 1070/71 G05 0.4 0 1.0 25 °C 1.4 0.6 0.2 2 4 6 1 3 5 7 1.6 FOR LT1071, DIVIDE CURRENT BY 2 100 °C –55 °C 150 °C Isolated Mode Flyback Reference Voltage TEMPERATURE ( °C) –75 19 20 21 125 1070/71 G06 18 17 15 –25 25 75 – 50 150 0 50 100 16 23 22 RFEEDBACK = 500Ω RFEEDBACK = 1k RFEEDBACK = 10k Line Regulation Feedback Bias Current vs Temperature INPUT VOLTAGE (V) 0 –5 –3 –1 1 10 20 30 40 1070/71 G07 50 3 5 –4 –2 0 2 4 60 TJ = 150°C TJ = 25°C TJ = –55°C TEMPERATURE ( °C) –75 600 500 400 300 200 100 0 125 1070/71 G09 –25 25 75 – 50 150 0 50 100 800 700 Reference Voltage vs Temperature TEMPERATURE ( °C) –75 1.246 1.244 1.242 1.240 1.238 1.236 1.234 125 1070/71 G08 –25 25 75 – 50 150 0 50 100 1.250 1.248 40 39 38 37 36 35 34 42 41 SWITCHING FREQUENCY REFERENCE V0LTAGE |
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