Datasheet LTC3370 (Analog Devices) - 9
| Fabricante | Analog Devices |
| Descripción | 4-Channel 8A Configurable Buck DC/DCs |
| Páginas / Página | 24 / 9 — Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. 2A … |
| Formato / tamaño de archivo | PDF / 810 Kb |
| Idioma del documento | Inglés |
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. 2A Buck Efficiency vs I
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LTC3370
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. 2A Buck Efficiency vs I 2A Buck Efficiency vs ILOAD, 3A Buck Efficiency vs I LOAD, LOAD, V VOUT = 2.5V V OUT = 1.8V OUT = 1.8V
100 100 100 90 90 90 80 80 80 Burst Mode 70 Burst Mode 70 Burst Mode 70 OPERATION OPERATION OPERATION 60 60 V 60 V IN = 2.7V IN = 2.25V VIN = 2.25V 50 V V IN = 3.3V IN = 3.3V 50 50 V VIN = 3.3V V IN = 5.5V V 40 IN = 5.5V 40 VIN = 2.7V 40 IN = 5.5V EFFICIENCY (%) VIN = 2.25V EFFICIENCY (%) V EFFICIENCY (%) VIN = 2.25V 30 V IN = 3.3V IN = 3.3V 30 V 30 VIN = 3.3V V IN = 5.5V IN = 5.5V VIN = 5.5V 20 20 20 FORCED VOUT = 1.8V FORCED VOUT = 2.5V FORCED VOUT = 1.8V 10 CONTINUOUS fOSC = 2MHz 10 CONTINUOUS fOSC = 2MHz 10 CONTINUOUS fOSC = 2MHz MODE L = 2.2µH MODE L = 2.2µH MODE L = 2.2µH 0 0 0 1 10 100 1000 1 10 100 1000 1 10 100 1000 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA) 3370 G28 3370 G29 3370 G30
3A Buck Efficiency vs ILOAD, 4A Buck Efficiency vs ILOAD, 4A Buck Efficiency vs ILOAD, VOUT = 2.5V VOUT = 1.8V VOUT = 2.5V
100 100 100 90 90 90 80 80 80 Burst Mode Burst Mode 70 Burst Mode OPERATION 70 OPERATION 70 OPERATION 60 60 FORCED FORCED VOUT = 2.5V V 60 IN = 2.7V CONTINUOUS VOUT = 1.8V CONTINUOUS fOSC = 2MHz 50 VIN = 3.3V 50 MODE fOSC = 2MHz 50 MODE L = 2.2µH V L = 2.2µH 40 IN = 5.5V 40 40 EFFICIENCY (%) VIN = 2.7V EFFICIENCY (%) VIN = 2.25V EFFICIENCY (%) VIN = 2.7V 30 VIN = 3.3V 30 30 V VIN = 3.3V VIN = 3.3V IN = 5.5V 20 20 VIN = 5.5V V 20 IN = 5.5V FORCED VOUT = 2.5V VIN = 2.25V VIN = 2.7V 10 CONTINUOUS fOSC = 2MHz 10 VIN = 3.3V 10 VIN = 3.3V MODE L = 2.2µH V V 0 0 IN = 5.5V IN = 5.5V 0 1 10 100 1000 1 10 100 1000 1 10 100 1000 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA) 3370 G31 3370 G32 3370 G33
1A Buck Efficiency vs ILOAD 1A Buck Efficiency vs Frequency 1A Buck Efficiency vs Frequency (Across Operating Frequency) (Forced Continuous Mode) (Forced Continuous Mode)
100 100 100 VIN = 2.25V VIN = 3.3V 90 90 90 VIN = 3.3V 80 80 80 VIN = 5.5V V V 70 Burst Mode OUT = 1.8V IN = 5.5V OPERATION V 70 V IN = 3.3V 70 IN = 2.25V 60 FORCED 60 60 50 CONTINUOUS 50 50 MODE 40 40 40 EFFICIENCY (%) fOSC = 1MHz, L = 3.3µH EFFICIENCY (%) EFFICIENCY (%) 30 fOSC = 2MHz, L = 2.2µH 30 30 20 fOSC = 3MHz, L = 1µH 20 f 20 OSC = 1MHz, L = 3.3µH VOUT = 1.8V VOUT = 1.8V 10 fOSC = 2MHz, L = 2.2µH 10 ILOAD = 100mA 10 ILOAD = 200mA f L = 3.3µH L = 3.3µH 0 OSC = 3MHz, L = 1µH 0 0 1 10 100 1000 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3 LOAD CURRENT (mA) FREQUENCY (MHz) FREQUENCY (MHz) 3370 G34 3370 G35 3370 G36 3370fb For more information www.linear.com/LTC3370 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Block Diagram Operation Buck Switching Regulators Buck Regulators with Combined Power Stages Power Failure Reporting Via PGOODALL Pin Temperature Monitoring and Overtemperature Protection Programming the Operating Frequency Applications Information Buck Switching Regulator Output Voltage and Feedback Network Buck Regulators Combined Buck Power Stages Input and Output Decoupling Capacitor Selection PCB Considerations Typical Applications Package Description Typical Application Related Parts
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. 2A Buck Efficiency vs I 2A Buck Efficiency vs ILOAD, 3A Buck Efficiency vs I LOAD, LOAD, V VOUT = 2.5V V OUT = 1.8V OUT = 1.8V
100 100 100 90 90 90 80 80 80 Burst Mode 70 Burst Mode 70 Burst Mode 70 OPERATION OPERATION OPERATION 60 60 V 60 V IN = 2.7V IN = 2.25V VIN = 2.25V 50 V V IN = 3.3V IN = 3.3V 50 50 V VIN = 3.3V V IN = 5.5V V 40 IN = 5.5V 40 VIN = 2.7V 40 IN = 5.5V EFFICIENCY (%) VIN = 2.25V EFFICIENCY (%) V EFFICIENCY (%) VIN = 2.25V 30 V IN = 3.3V IN = 3.3V 30 V 30 VIN = 3.3V V IN = 5.5V IN = 5.5V VIN = 5.5V 20 20 20 FORCED VOUT = 1.8V FORCED VOUT = 2.5V FORCED VOUT = 1.8V 10 CONTINUOUS fOSC = 2MHz 10 CONTINUOUS fOSC = 2MHz 10 CONTINUOUS fOSC = 2MHz MODE L = 2.2µH MODE L = 2.2µH MODE L = 2.2µH 0 0 0 1 10 100 1000 1 10 100 1000 1 10 100 1000 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA) 3370 G28 3370 G29 3370 G30
3A Buck Efficiency vs ILOAD, 4A Buck Efficiency vs ILOAD, 4A Buck Efficiency vs ILOAD, VOUT = 2.5V VOUT = 1.8V VOUT = 2.5V
100 100 100 90 90 90 80 80 80 Burst Mode Burst Mode 70 Burst Mode OPERATION 70 OPERATION 70 OPERATION 60 60 FORCED FORCED VOUT = 2.5V V 60 IN = 2.7V CONTINUOUS VOUT = 1.8V CONTINUOUS fOSC = 2MHz 50 VIN = 3.3V 50 MODE fOSC = 2MHz 50 MODE L = 2.2µH V L = 2.2µH 40 IN = 5.5V 40 40 EFFICIENCY (%) VIN = 2.7V EFFICIENCY (%) VIN = 2.25V EFFICIENCY (%) VIN = 2.7V 30 VIN = 3.3V 30 30 V VIN = 3.3V VIN = 3.3V IN = 5.5V 20 20 VIN = 5.5V V 20 IN = 5.5V FORCED VOUT = 2.5V VIN = 2.25V VIN = 2.7V 10 CONTINUOUS fOSC = 2MHz 10 VIN = 3.3V 10 VIN = 3.3V MODE L = 2.2µH V V 0 0 IN = 5.5V IN = 5.5V 0 1 10 100 1000 1 10 100 1000 1 10 100 1000 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA) 3370 G31 3370 G32 3370 G33
1A Buck Efficiency vs ILOAD 1A Buck Efficiency vs Frequency 1A Buck Efficiency vs Frequency (Across Operating Frequency) (Forced Continuous Mode) (Forced Continuous Mode)
100 100 100 VIN = 2.25V VIN = 3.3V 90 90 90 VIN = 3.3V 80 80 80 VIN = 5.5V V V 70 Burst Mode OUT = 1.8V IN = 5.5V OPERATION V 70 V IN = 3.3V 70 IN = 2.25V 60 FORCED 60 60 50 CONTINUOUS 50 50 MODE 40 40 40 EFFICIENCY (%) fOSC = 1MHz, L = 3.3µH EFFICIENCY (%) EFFICIENCY (%) 30 fOSC = 2MHz, L = 2.2µH 30 30 20 fOSC = 3MHz, L = 1µH 20 f 20 OSC = 1MHz, L = 3.3µH VOUT = 1.8V VOUT = 1.8V 10 fOSC = 2MHz, L = 2.2µH 10 ILOAD = 100mA 10 ILOAD = 200mA f L = 3.3µH L = 3.3µH 0 OSC = 3MHz, L = 1µH 0 0 1 10 100 1000 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3 LOAD CURRENT (mA) FREQUENCY (MHz) FREQUENCY (MHz) 3370 G34 3370 G35 3370 G36 3370fb For more information www.linear.com/LTC3370 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Block Diagram Operation Buck Switching Regulators Buck Regulators with Combined Power Stages Power Failure Reporting Via PGOODALL Pin Temperature Monitoring and Overtemperature Protection Programming the Operating Frequency Applications Information Buck Switching Regulator Output Voltage and Feedback Network Buck Regulators Combined Buck Power Stages Input and Output Decoupling Capacitor Selection PCB Considerations Typical Applications Package Description Typical Application Related Parts