Datasheet LTC3402 (Analog Devices) - 4

LTC3402
W U TYPICAL PERFOR A CE CHARACTERISTICS (TA = 25
°
C unless otherwise noted) Converter Efficiency 1.2V to 3.3V Converter Efficiency 2.4V to 3.3V Converter Efficiency 3.6V to 5V
100 100 100 Burst Mode Burst Mode OPERATION 90 300kHz 90 90 OPERATION Burst Mode 80 80 OPERATION 80 3MHz 3MHz 70 70 70 1MHz 300kHz 1MHz 1MHz 60 60 60 FIXED FREQUENCY 50 50 50 40 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 30 30 20 20 20 10 10 10 V 0 0 IN = 3.6V 0 0.1 1 10 100 1000 0.1 1 10 100 1000 0.1 1 10 100 1000 OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) LOAD CURRENT (mA) 3402 G07 3402 G08 3402 G10
Start-Up Voltage Efficiency Loss Without Schottky vs IOUT vs Frequency Current Limit
500 14 3.4 TA = 25°C TA = 25°C 12 3.2 400 10 3.0 300 8 2.8 200 6 2.6 CURRENT (A) OUTPUT CURRENT (mA) EFFICIENCY LOSS (%) 4 2.4 100 2 2.2 0 0 2.0 0.8 0.9 1 1.1 1.2 1.3 1.4 0.2 0.6 1.0 1.4 1.8 2.2 2.6 3.0 –55 –15 25 65 105 125 VIN (V) FREQUENCY (MHz) TEMPERATURE (°C) 3402 G09 3402 G11 3402 G12
EA FB Voltage Oscillator Frequency Accuracy NMOS RDS(ON)
1.28 2.10 0.30 Rt = 15k VOUT = 3.3V 1.27 0.25 2.05 ) 1.26 Ω 0.20 1.25 2.00 VOLTAGE (V) 0.15 1.24 FREQUENCY (MHz) RESISTANCE ( 1.95 0.10 1.23 1.22 1.90 0.05 –55 –15 25 65 105 125 –55 –15 25 65 105 125 –55 –15 25 65 105 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3402 G13 3402 G14 3402 G22 3402fb 4