Datasheet LTC3528-2 (Analog Devices) - 4

LTC3528-2
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise noted) Efficiency vs Load Current Efficiency vs Load Current and VIN for VOUT = 3.3V and VIN for VOUT = 5V No-Load Input Current vs VIN
100 1000 100 1000 130 EFFICIENCY EFFICIENCY 90 90 110 100 100 80 POWER LOSS (mW) 80 POWER LOSS (mW) 90 70 10 70 10 (µA) 70 60 POWER POWER I IN LOSS 1 60 VOUT = 1.8V EFFICIENCY (%) LOSS EFFICIENCY (%) V 50 OUT = 3V 50 50 VOUT = 3.3V V 1 IN = 1.2V V 0.1 VIN = 1.2V OUT = 5V 40 VIN = 1.8V VIN = 2.4V 30 V 40 IN = 2.4V VIN = 3.6V VIN = 3V V 30 0.01 IN = 4.2V 30 0.1 10 0.01 0.1 1 10 100 1000 0.01 0.1 1 10 100 1000 1 2 3 4 5 LOAD CURRENT (mA) LOAD CURRENT (mA) VIN (V) 35282 G02 35282 G03 35282 G04
Minimum Load Resistance During Maximum Output Current vs VIN Start-Up vs VIN Start-Up Delay Time vs VIN
800 10000 130 700 120 600 110 1000 500 100 (Ω) (mA) 400 Y (µs) 90 I OUT 300 R LOAD DELA 80 100 200 70 VOUT = 1.8V 100 VOUT = 3.3V 60 VOUT = 5V 0 10 50 1 1.5 2 2.5 3 3.5 4 4.5 0.7 0.8 0.9 1 1 1.5 2 2.5 3 3.5 4 4.5 VIN (V) V V IN (V) IN (V) 35282 G05 35282 G06 35282 G07
Burst Mode Threshold Current Burst Mode Threshold Current Burst Mode Threshold Current vs VIN vs VIN vs VIN
80 80 V 80 OUT = 1.8V VOUT = 3V VOUT = 3.3V 60 60 60 EXIT BURST EXIT BURST EXIT BURST (mA) 40 (mA) 40 (mA) 40 I OUT ENTER BURST I OUT I OUT ENTER BURST ENTER BURST 20 20 20 0 0 0 1 1.1 1.2 1.3 1.4 1.5 1 1.5 2 2.5 1 1.5 2 2.5 3 VIN (V) VIN (V) VIN (V) 35282 G08 35282 G09 35282 G10 35282fb 4 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Related Parts