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LTC3865EUH-1 Datasheet(PDF) 6 Page - Linear Technology |
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LTC3865EUH-1 Datasheet(HTML) 6 Page - Linear Technology |
6 / 36 page LTC3865/LTC3865-1 3865f Load Step (Burst Mode Operation) Load Step (Forced Continuous Mode) Load Step (Pulse-Skipping Mode) Inductor Current at Light Load Prebiased Output at 1V Coincident Tracking VOUT 100mV/DIV AC- COUPLED ILOAD 5A/DIV 500mA TO 7A IL 5A/DIV 40µs/DIV VIN = 12V VOUT = 1.5V FIGURE 16 CIRCUIT 3865 G01 VOUT 100mV/DIV AC- COUPLED ILOAD 5A/DIV 500mA TO 7A IL 5A/DIV 40µs/DIV 3865 G02 VIN = 12V VOUT = 1.5V FIGURE 16 CIRCUIT VOUT 100mV/DIV AC- COUPLED ILOAD 5A/DIV 500mA TO 7A IL 5A/DIV 40µs/DIV 3865 G03 VIN = 12V VOUT = 1.5V FIGURE 16 CIRCUIT RUN 2V/DIV VTRACK/SS 1V/DIV VOUT = 1.5V 500mV/DIV 40ms/DIV 3865 G05 FORCED CONTINUOUS MODE 5A/DIV PULSE- SKIPPING MODE 5A/DIV Burst Mode OPERATION 5A/DIV 2µs/DIV VIN = 12V VOUT = 1.5V ILOAD = 100mA FIGURE 16 CIRCUIT 3865 G04 RUN1 2V/DIV 40ms/DIV 3865 G06 VOUT2 = 1.2V 1 LOAD 500mV/DIV VOUT1 = 1.5V 1 LOAD 500mV/DIV Typical perForMance characTerisTics Efficiency vs Load Current Efficiency vs Load Current Efficiency and Power Loss vs Input Voltage LOAD CURRENT (A) 30 90 100 20 10 80 50 70 60 40 0.01 1 10 100 3865 G23 0 0.1 VIN = 12V VOUT = 1.5V FIGURE 16 CIRCUIT BURST DCM CCM LOAD CURRENT (A) 30 90 100 20 10 80 50 70 60 40 0.01 1 10 100 3865 G24 0 0.1 VIN = 12V VOUT = 1.2V FIGURE 16 CIRCUIT BURST DCM CCM INPUT VOLTAGE (V) 0 50 60 70 3865 G25 40 30 20 10 20 80 90 100 3 2 1 0 4 5 30 EFFICIENCY POWER LOSS FIGURE 16 CIRCUIT |
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