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LTC3631 Datasheet(PDF) 4 Page - Linear Technology |
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LTC3631 Datasheet(HTML) 4 Page - Linear Technology |
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4 / 26 page  LTC3630 4 3630fb TYPICAL PERFORMANCE CHARACTERISTICS Efficiency and Power Loss vs Load Current, VOUT = 5V Efficiency and Power Loss vs Load Current, VOUT = 3.3V Efficiency and Power Loss vs Load Current, VOUT = 1.8V Soft-Start Waveform Load Step Transient Response Short-Circuit Response ELECTRICAL CHARACTERISTICS Note that the maximum ambient temperature consistent with these specifications is determined by specific operating conditions in conjunction with board layout, the rated package thermal impedance and other environmental factors. Note 4: This IC includes over temperature protection that is intended to protect the device during momentary overload conditions. The maximum rated junction temperature will be exceeded when this protection is active. Continuous operation above the specified absolute maximum operating junction temperature may impair device reliability or permanently damage the device. The overtemperature protection level is not production tested. Note 5: Dynamic supply current is higher due to the gate charge being delivered at the switching frequency. See Applications Information. Note 6: For application concerned with pin creepage and clearance distances at high voltages, the MSOP package should be used. See Applications Information. OUTPUT VOLTAGE 2V/DIV INDUCTOR CURRENT 500mA/DIV 1ms/DIV COUT = 100μF FIGURE 13 CIRCUIT 3630 G01 OUTPUT VOLTAGE 50mV/DIV LOAD CURRENT 200mA/DIV 500μs/DIV VIN = 12V VOUT = 5V FIGURE 13 CIRCUIT 3630 G02 OUTPUT VOLTAGE 2V/DIV INDUCTOR CURRENT 500mA/DIV 200μs/DIV VIN = 12V VOUT = 5V FIGURE 13 CIRCUIT 3630 G03 LOAD CURRENT (mA) 30 90 100 20 10 80 50 70 10 1 100 1000 60 40 0.1 10 100 1000 3630 G04 0 1 EFFICIENCY POWER VOUT = 5V FIGURE 13 CIRCUIT VIN = 12V VIN = 65V LOAD CURRENT (mA) 30 90 100 20 10 80 50 70 10 1 100 1000 60 40 0.1 10 100 1000 3630 G05 0 1 EFFICIENCY POWER VOUT = 3.3V FIGURE 13 CIRCUIT VIN = 12V VIN = 65V LOAD CURRENT (mA) 30 90 100 20 10 80 50 70 10 1 100 1000 60 40 0.1 10 100 1000 3630 G06 0 1 EFFICIENCY POWER VOUT = 1.8V FIGURE 13 CIRCUIT VIN = 12V VIN = 65V |
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