Datasheet LTC3603 (Analog Devices) - 5

LTC3603
typical perForMance characteristics Quiescent Current Quiescent Current Frequency vs Temperature vs Input Voltage vs Temperature
1020 600 600 ROSC = 105kΩ 1015 ACTIVE 500 500 ACTIVE 1010 400 400 1005 1000 300 300 995 FREQUENCY (kHz) 200 200 990 QUIESCENT CURRENT (µA) QUIESCENT CURRENT (µA) 100 SLEEP 100 SLEEP 985 980 0 0 –50 –25 0 25 50 75 100 125 4 5 6 7 8 9 10 11 12 13 14 15 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 3603 G09 3603 G10 3603 G11
Minimum Peak Inductor Current Maximum Peak Inductor Current Efficiency vs Load Current, vs Burst Clamp Voltage vs Duty Cycle Operation
3.0 5 100 FIGURE 6 CIRCUIT VIN = 7.2V 2.5 95 VIN = 5V 4 2.0 90 3 VIN = 15V 1.5 85 VIN = 12V 2 1.0 EFFICIENCY (%) 80 PEAK INDUCTOR CURRENT (A) 0.5 PEAK INDUCTOR CURRENT (A) 1 75 0 0 70 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0 10 20 30 40 50 60 70 80 90 100 0.001 0.01 0.1 1 10 BURST CLAMP VOLTAGE (V) DUTY CYCLE (%) LOAD CURRENT (A) 3603 G12 3603 G13 3603 G14
Efficiency vs Load Current, Forced Continuous Efficiency vs Input Voltage Efficiency vs Frequency
100 100 100 FIGURE 6 CIRCUIT FIGURE 6 CIRCUIT FIGURE 6 CIRCUIT 90 I V 98 LOAD = 2A IN = 5V 95 ILOAD = 1A VIN = 15V 96 80 V 90 IN = 12V ILOAD = 2.5A 94 70 VIN = 7.2V VIN = 7.2V 85 92 60 V EFFICIENCY (%) EFFICIENCY (%) IN = 12V 80 EFFICIENCY (%) 90 50 88 40 75 86 30 70 84 0.01 0.1 1 10 4 5 6 7 8 9 10 11 12 13 14 15 16 0 1000 2000 3000 LOAD CURRENT (A) INPUT VOLTAGE (V) FREQUENCY (kHz) 3603 G15 3603 G16 3603 G17 3603fc For more information www.linear.com/LTC3603 5