Datasheet LTC3611 (Analog Devices) - 5

LTC3611 typicAl perForMAnce chArActeristics
Efficiency vs Load Current Efficiency vs Input Voltage Frequency vs Input Voltage
100 100 640 FCB = 5V DISCONTINUOUS FIGURE 6 CIRCUIT ILOAD = 10A 600 90 95 560 80 CONTINUOUS 90 520 I 70 LOAD = 10A EFFICIENCY (%) EFFICIENCY (%) FREQUENCY (kHz) 480 ILOAD = 0A VIN = 12V 85 60 VOUT = 2.5V ILOAD = 1A 440 EXTVCC = 5V FCB = 0V FIGURE 6 CIRCUIT FIGURE 6 CIRCUIT 50 80 400 0.01 0.1 1 10 5 10 15 20 25 30 35 5 10 15 20 25 30 35 LOAD CURRENT (A) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3611 G06 3611 G04 3611 G05
Frequency vs Load Current Load Regulation ITH Voltage vs Load Current
650 0.80 2.5 FIGURE 6 CIRCUIT FIGURE 6 CIRCUIT 600 0.60 550 CONTINUOUS MODE 2.0 500 0.40 450 400 DISCONTINUOUS MODE 0.20 1.5 CONTINUOUS 350 (%) 0 TAGE (V) MODE 300 ∆V OUT VOL 1.0 250 –0.20 I TH FREQUENCY (kHz) 200 DISCONTINUOUS –0.40 MODE 150 0.5 100 –0.60 50 0 –0.80 0 0 2 4 6 8 10 0 2 4 6 8 10 0 5 10 15 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 3611 G07 3611 G08 3611 G09
Load Current vs ITH Voltage and VRNG On-Time vs ION Current On-Time vs VON Voltage
25 10000 1000 VVON = 0V ION = 30µA 20 V 800 RNG = 1V 15 0.7V 1000 600 10 0.5V 5 ON-TIME (ns) ON-TIME (ns) 400 LOAD CURRENT (A) 100 0 200 –5 –10 10 0 0 0.5 1 1.5 2 2.5 3 1 10 100 0 1 2 3 ITH VOLTAGE (V) ION CURRENT (µA) VON VOLTAGE (V) 3611 G11 3611 G12 3611 G10 3611fd Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration order information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts