Datasheet LTC3499, LTC3499B (Analog Devices) - 4

LTC3499/LTC3499B
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. 2-Cell to 5V Efficiency Li-Ion to 5V Efficiency 2-Cell to 5V Efficiency vs Load Current (LTC3499 Only) vs Load Current (LTC3499 Only) vs Load Current (LTC3499B Only)
100 100000 100 100000 100 90 90 10000 90 10000 EFFICIENCY 80 POWER LOSS (mW) EFFICIENCY 80 POWER LOSS (mW) 70 80 1000 1000 60 70 70 100 POWER LOSS 100 50 60 40 EFFICIENCY (%) POWER LOSS 60 10 EFFICIENCY (%) 10 EFFICIENCY (%) 50 30 20 50 VIN = 3.2V 1 VIN = 4.2V 1 VIN = 3.2V V 40 IN = 2.4V VIN = 3.6V 10 VIN = 2.4V VIN = 1.8V VIN = 3V VIN = 1.8V 40 0.1 30 0.1 0 0.1 1 10 100 1000 0.1 1 10 100 1000 0.1 1 10 100 1000 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA) 3499 G01 3499 G03 3499 G17
Burst Mode Output Current Current Limit Accuracy 2-Cell to 3.3V Efficiency Threshold vs Input Voltage vs Temperature vs Load Current (LTC3499 Only) (LTC3499 Only)
1.04 100 100000 60 VOUT = 5V 1.03 90 10000 50 1.02 EFFICIENCY POWER LOSS (mW) 80 1000 40 1.01 1.00 70 100 30 0.99 EFFICIENCY (%) CURRENT LIMIT (A) 60 10 20 0.98 POWER LOSS 50 VIN = 3V 1 10 0.97 VIN = 2.4V VIN = 1.8V 0.96 40 0.1 Burst Mode OUTPUT CURRENT THRESHOLD (mA) 0 –50 –25 0 25 50 75 100 0.1 1 10 100 1000 1.8 2.3 2.8 3.3 3.8 4.3 4.8 TEMPERATURE (°C) LOAD CURRENT (mA) INPUT VOLTAGE (V) 3499 G04 3499 G02 3499 G05
Maximum Output Current No Load Input Current vs VIN Burst Mode Quiescent Current Capability vs VIN (LTC3499 Only) vs Temperature (LTC3499 Only)
800 200 30 VIN > VOUT V 180 700 IN > VOUT 25 160 600 V 140 OUT = 3.3V 20 500 VOUT = 3.3V 120 VOUT = 5V 400 100 15 300 80 V 10 OUT = 5V 60 OUTPUT CURRENT (mA) INPUT CURRENT (µA) 200 40 5 100 20 Burst Mode QUIESCENT CURRENT (µA) 0 0 0 1.5 2.5 3.5 4.5 5.5 1.5 2.5 3.5 4.5 5.5 –50 –25 0 25 50 75 100 VIN (V) VIN (V) TEMPERATURE (°C) 3499 G06 3499 G07 3499 G08 3499fc 4