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LTC3718 Datasheet(PDF) 4 Page - Linear Technology |
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LTC3718 Datasheet(HTML) 4 Page - Linear Technology |
4 / 20 page 4 LTC3718 3718fa TYPICAL PERFOR A CE CHARACTERISTICS Boost Converter Oscillator Frequency vs Temperature Boost Converter Current Limit vs Duty Cycle SHDN Pin Current vs VSHDN VFB2, Feedback Pin Voltage TEMPERATURE ( °C) –50 –25 0 25 50 75 100 3718 G01 2.00 1.75 1.50 1.25 1.00 0.75 0.50 0.25 0 VIN = 5V VIN = 1.5V SHDN PIN VOLTAGE (V) 012345 3718 G02 50 40 30 20 10 0 TA = 25°C DUTY CYCLE (%) 10 20 30 40 50 60 70 80 3718 G03 1000 900 800 700 600 500 400 300 200 70 °C 25 °C –40 °C TEMPERATURE ( °C) –50 3718 G04 1.25 1.24 1.23 1.22 1.21 1.20 FIGURE 1 CIRCUIT –25 0 25 50 75 100 ELECTRICAL CHARACTERISTICS Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: TJ is calculated from the ambient temperature TA and power dissipation PD as follows: LTC3718EG: TJ = TA + (PD • 130°C/W) Note 3: The LTC3718 is tested in a feedback loop that adjusts VFB1 to achieve a specified error amplifier output voltage (ITH). Note 4: The LTC3718 is guaranteed to meet performance specifications from 0 °C to 70°C. Specifications over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. Note 5: Current limit guaranteed by design and/or correlation to static test. INPUT VOLTAGE (V) 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9 3718 G06 50.00 49.95 49.90 49.85 49.80 49.75 49.70 49.65 LOAD = 0A LOAD = 10A FIGURE 1 CIRCUIT LOAD = 1A LOAD CURRENT (A) 100 90 80 70 60 50 40 30 20 10 0 0.01 1 10 100 3718 G05/TA01a 0.1 VIN = 2.5V VOUT = 1.25V FIGURE 1 CIRCUIT Efficiency vs Load Current VOUT/VIN Tracking Ratio vs Input Voltage |
Similar Part No. - LTC3718_15 |
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Similar Description - LTC3718_15 |
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