Datasheet LTC3528, LTC3528B (Analog Devices) - 4
| Fabricante | Analog Devices |
| Descripción | 1A, 1MHz Synchronous Step-Up DC/DC Converters in 3mm x 2mm DFN |
| Páginas / Página | 18 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise noted). … |
| Formato / tamaño de archivo | PDF / 340 Kb |
| Idioma del documento | Inglés |
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise noted). Efficiency vs Load Current and VIN
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LTC3528/LTC3528B
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise noted) Efficiency vs Load Current and VIN Efficiency vs Load Current and VIN No-Load Input Current vs VIN for VOUT = 3.3V (LTC3528) for VOUT = 5V (LTC3528) (LTC3528)
100 1000 100 1000 130 EFFICIENCY EFFICIENCY 90 90 100 110 100 80 POWER LOSS (mW) 80 POWER LOSS (mW) 90 70 10 70 10 (µA) 70 60 POWER 60 POWER I IN LOSS 1 V LOSS OUT = 1.8V EFFICIENCY (%) EFFICIENCY (%) V 50 OUT = 3V 50 50 VOUT = 3.3V 1 VIN = 1.2V VIN = 1.2V V 0.1 OUT = 5V 40 VIN = 1.8V 40 VIN = 2.4V 30 VIN = 2.4V VIN = 3.6V VIN = 3V VIN = 4.2V 30 0.01 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) 3528 G02 3528 G03 3528 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) 3528 G05 3528 G06 3528 G07
Burst Mode Threshold Current Burst Mode Threshold Current Burst Mode Threshold Current vs VIN vs VIN vs VIN
40 50 60 VOUT = 1.8V VOUT = 3V VOUT = 3.3V 40 30 EXIT BURST EXIT BURST 40 30 EXIT BURST (mA) 20 (mA) ENTER BURST (mA) I OUT I OUT 20 I OUT ENTER BURST ENTER BURST 20 10 10 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) 3528 G08 3528 G09 3528 G10 3528fd 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
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise noted) Efficiency vs Load Current and VIN Efficiency vs Load Current and VIN No-Load Input Current vs VIN for VOUT = 3.3V (LTC3528) for VOUT = 5V (LTC3528) (LTC3528)
100 1000 100 1000 130 EFFICIENCY EFFICIENCY 90 90 100 110 100 80 POWER LOSS (mW) 80 POWER LOSS (mW) 90 70 10 70 10 (µA) 70 60 POWER 60 POWER I IN LOSS 1 V LOSS OUT = 1.8V EFFICIENCY (%) EFFICIENCY (%) V 50 OUT = 3V 50 50 VOUT = 3.3V 1 VIN = 1.2V VIN = 1.2V V 0.1 OUT = 5V 40 VIN = 1.8V 40 VIN = 2.4V 30 VIN = 2.4V VIN = 3.6V VIN = 3V VIN = 4.2V 30 0.01 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) 3528 G02 3528 G03 3528 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) 3528 G05 3528 G06 3528 G07
Burst Mode Threshold Current Burst Mode Threshold Current Burst Mode Threshold Current vs VIN vs VIN vs VIN
40 50 60 VOUT = 1.8V VOUT = 3V VOUT = 3.3V 40 30 EXIT BURST EXIT BURST 40 30 EXIT BURST (mA) 20 (mA) ENTER BURST (mA) I OUT I OUT 20 I OUT ENTER BURST ENTER BURST 20 10 10 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) 3528 G08 3528 G09 3528 G10 3528fd 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