Datasheet LTC3703-5 (Analog Devices) - 4

LTC3703-5
W U TYPICAL PERFOR A CE CHARACTERISTICS TA = 25
°
C (unless otherwise noted). Efficiency vs Input Voltage Efficiency vs Load Current Load Transient Response
100 100 VIN = 24V VOUT 95 95 50mV/DIV VIN = 42V I AC COUPLED OUT = 1A IOUT = 5A 90 90 IOUT 2A/DIV EFFICIENCY (%) EFFICIENCY (%) 85 85 V V OUT = 5V OUT = 12V V 50µs/DIV IN = 50V f = 250kHz f = 250kHz VOUT = 12V FORCED CONTINUOUS PULSE SKIP ENABLED 80 80 1A TO 5A LOAD STEP 37035 G03 0 10 20 30 40 50 60 0 1 2 3 4 5 INPUT VOLTAGE (V) LOAD CURRENT (A) 37035 G01 37035 G02
VCC Shutdown Current vs VCC VCC Current vs VCC Voltage V Voltage CC Current vs Temperature
3.5 4 120 VCC RISING 3.0 COMP = 1.5V 100 3 COMP = 1.5V 2.5 µA) 80 2.0 VFB = 0V 2 60 1.5 CURRENT (mA) CURRENT (mA) VFB = 0V CURRENT ( CC CC CC 40 V V 1.0 V 1 0.5 20 0 0 0 0 2.5 5 7.5 10 12.5 15 –60 –40 –20 0 20 40 60 80 100 120 140 0 2 4 6 8 10 12 14 16 V V CC VOLTAGE (V) TEMPERATURE (°C) CC VOLTAGE (V) 37035 G04 37035 G05 37035 G06
VCC Shutdown Current Reference Voltage Normalized Frequency vs Temperature vs Temperature vs Temperature
35 0.803 1.20 VCC = 5V 1.15 30 0.802 1.10 25 µA) 1.05 0.801 20 1.00 15 CURRENT ( 0.800 0.95 CCV 10 REFERENCE VOLTAGE (V) NORMALIZED FREQUENCY 0.90 0.799 5 0.85 0 0.798 0.80 –60 –40 –20 0 20 40 60 80 100 120 140 –60 –40 –20 0 20 40 60 80 100 120 140 –60 –40 –20 0 20 40 60 80 100 120 140 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 37035 G07 37035 G08 37035 G09 37035fa 4