Datasheet LTC3419 (Analog Devices) - 5

LTC3419
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 3.6V, unless otherwise noted. Effi ciency vs Load Current Effi ciency vs Load Current Effi ciency vs Load Current
100 100 100 90 90 90 80 80 80 70 70 70 60 60 60 50 50 50 40 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 30 30 20 20 20 VIN = 2.7V VIN = 2.7V VIN = 2.7V 10 VIN = 3.6V 10 VIN = 3.6V 10 VIN = 3.6V VOUT = 1.2V VIN = 4.2V VOUT = 1.8V VIN = 4.2V VOUT = 2.5V VIN = 4.2V 0 0 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) OUTPUT CURRENT (mA) 3419 G10 3419 G11 3419 G12
Effi ciency vs Load Current Load Regulation Load Regulation
100 3.0 2.0 Burst Mode OPERATION VOUT = 1.2V VOUT = 1.8V 90 V 2.5 OUT = 1.8V V 1.5 80 OUT = 2.5V 2.0 70 PULSE SKIP MODE 1.0 60 1.5 Burst Mode OPERATION 50 1.0 0.5 ERROR (%) ERROR (%) 40 0.5 EFFICIENCY (%) OUT OUT V V 30 0 0 20 –0.5 10 –0.5 Burst Mode OPERATION VOUT = 1.8V PULSE SKIP MODE 0 –1.0 –1.0 0.1 1 10 100 1000 0 100 200 300 400 500 600 0 100 200 300 400 500 600 OUTPUT CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA) 3419 G13 3419 G14 3419 G15
Line Regulation Start-Up from Shutdown Start-Up from Shutdown
0.6 VOUT = 1.8V ILOAD = 100mA RUN RUN 0.4 2V/DIV 2V/DIV 0.2 VOUT VOUT 1V/DIV 1V/DIV 0 ERROR (%) OUT I ILOAD V –0.2 L 500mA/DIV 500mA/DIV –0.4 3419 G17 3419 G18 250μs/DIV 250μs/DIV VIN = 3.6V VIN = 3.6V –0.6 VOUT = 1.8V VOUT = 1.8V 2.5 3.0 3.5 4.0 4.5 5.0 5.5 ILOAD = 0A RLOAD = 3Ω VIN (V) 3419 G16 3419fa 5