Datasheet LTC1735-1 (Analog Devices) - 5

LTC1735-1
W U TYPICAL PERFOR A CE CHARACTERISTICS Maximum Current Sense Threshold vs Normalized Output Voltage Maximum Current Sense Threshold Maximum Current Sense Threshold (Foldback) vs VRUN/SS vs Sense Common Mode Voltage
80 80 80 VSENSE(CM) = 1.6V 70 76 60 60 50 72 40 40 30 68 20 20 64 10 MAXIMUM CURRENT SENSE THRESHOLD (mV) 0 MAXIMUM CURRENT SENSE THRESHOLD (mV) 0 MAXIMUM CURRENT SENSE THRESHOLD (mV) 60 0 25 50 75 100 0 1 2 3 4 5 6 0 1 2 3 4 5 NORMALIZED OUTPUT VOLTAGE (%) VRUN/SS (V) COMMON MODE VOLTAGE (V) 1735-1 G10 1735-1 G11 1735-1 G12
Maximum Current Sense Voltage Maximum Current Sense Threshold vs ITH Voltage vs Temperature VITH vs VRUN/SS
90 80 2.5 V V 80 SENSE(CM) = 1.6V OSENSE = 0.7V 70 2.0 60 75 50 40 1.5 (V) 30 70 ITH 20 V 1.0 10 0 65 –10 0.5 MAXIMUM CURRENT SENSE VOLTAGE (V) –20 –30 MAXIMUM CURRENT SENSE THRESHOLD (mV) 60 0 0 0.5 1 1.5 2 2.5 –40 –15 10 35 60 85 110 135 0 1 2 3 4 5 6 V TEMPERATURE (°C) ITH (V) VRUN/SS (V) 1735-1 G13 1735-1 G18 1735-1 G15
SENSE Pins Total Source Current I Output Current vs Duty Cycle TH Voltage vs Load Current
100 2.5 100 VIN = 10V IOUT/IMAX (%) VOUT = 3.3V (SYNCHRONIZED) RSENSE = 0.01Ω MAX 2.0 /I 80 IOUT/IMAX 50 fO = 300kHz (FREE RUN) OUT 1.5 CONTINUOUS 60 µA) ( MODE 0 SYNCHRONIZED f = fO I SENSE VOLTAGE (V) 1.0 40 I TH Burst Mode –50 OPERATION 0.5 20 AVERAGE OUTPUT CURRENT I fSYNC = fO –100 0 0 0 2 4 6 0 1 2 3 4 5 6 0 20 40 60 80 100 V LOAD CURRENT (A) DUTY CYCLE (%) SENSE COMMON MODE VOLTAGE (V) 1735-1 G16 1735-1 G17 1735-1 G14 5