Datasheet LTC3374 (Analog Devices) - 8
| 制造商 | Analog Devices |
| 描述 | 8-Channel Parallelable 1A Buck DC/DCs |
| 页数 / 页 | 26 / 8 — TYPICAL PERFORMANCE CHARACTERISTICS. 1A Buck Efficiency vs ILOAD,. PMOS … |
| 文件格式/大小 | PDF / 460 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. 1A Buck Efficiency vs ILOAD,. PMOS R. DS(ON) vs Temperature. NMOS RDS(ON) vs Temperature
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LTC3374
TYPICAL PERFORMANCE CHARACTERISTICS 1A Buck Efficiency vs ILOAD, PMOS R V DS(ON) vs Temperature NMOS RDS(ON) vs Temperature OUT = 1.8V
550 550 100 Burst Mode OPERATION VIN = 2.25V VIN = 2.25V V 90 500 IN = 3.3V 500 VIN = 3.3V VIN = 5.5V VIN = 5.5V 80 450 450 70 400 400 FORCED 60 CONTINUOUS (mΩ) (mΩ) 350 350 50 MODE 40 R DS(ON) 300 R DS(ON) 300 EFFICIENCY (%) VOUT = 1.8V 30 fOSC = 2MHz 250 250 L = 2.2µH 20 VIN = 2.25V 200 200 10 VIN = 3.3V VIN = 5.5V 150 150 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 1 10 100 1000 TEMPERATURE (°C) TEMPERATURE (°C) LOAD CURRENT (mA) 3374 G17 3374 G18 3374 G19
1A Buck Efficiency vs ILOAD, 2A Buck Efficiency vs ILOAD, 2A Buck Efficiency vs ILOAD, VOUT = 2.5V VOUT = 1.8V VOUT = 2.5V
100 100 100 90 90 90 Burst Mode Burst Mode Burst Mode 80 OPERATION 80 OPERATION 80 OPERATION 70 70 70 FORCED FORCED FORCED 60 CONTINUOUS 60 CONTINUOUS 60 CONTINUOUS MODE 50 MODE 50 MODE 50 40 40 V 40 EFFICIENCY (%) VOUT = 2.5V EFFICIENCY (%) OUT = 1.8V EFFICIENCY (%) VOUT = 2.5V 30 fOSC = 2MHz 30 fOSC = 2MHz 30 fOSC = 2MHz L = 2.2µH L = 2.2µH L = 2.2µH 20 V 20 20 IN = 2.7V VIN = 2.25V VIN = 2.7V 10 VIN = 3.3V 10 VIN = 3.3V 10 VIN = 3.3V VIN = 5.5V VIN = 5.5V VIN = 5.5V 0 0 0 1 10 100 1000 1 10 100 1000 1 10 100 1000 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA) 3374 G20 3374 G21 3374 G22
3A Buck Efficiency vs ILOAD, 3A Buck Efficiency vs ILOAD, VOUT = 1.8V VOUT = 2.5V
100 100 90 90 80 80 Burst Mode 70 Burst Mode 70 OPERATION OPERATION 60 FORCED FORCED 60 CONTINUOUS 50 CONTINUOUS 50 MODE MODE 40 40 EFFICIENCY (%) VOUT = 1.8V EFFICIENCY (%) VOUT = 2.5V 30 fOSC = 2MHz 30 fOSC = 2MHz L = 2.2µH L = 2.2µH 20 V 20 IN = 2.25V VIN = 2.7V 10 VIN = 3.3V 10 VIN = 3.3V VIN = 5.5V VIN = 5.5V 0 0 1 10 100 1000 1 10 100 1000 LOAD CURRENT (mA) LOAD CURRENT (mA) 3374 G23 3374 G24 3374fc 8 For more information www.linear.com/LTC3374 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Buck Switching Regulators Buck Regulators with Combined Power Stages Power Failure Reporting Via PGOOD_ALL Pin Temperature Monitoring and Overtemperature Protection Programming the Operating Frequency Applications Information Buck Switching Regulator Output Voltage and Feedback Network Buck Regulators Combined Buck Regulators Input and Output Decoupling Capacitor Selection PCB Considerations Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS 1A Buck Efficiency vs ILOAD, PMOS R V DS(ON) vs Temperature NMOS RDS(ON) vs Temperature OUT = 1.8V
550 550 100 Burst Mode OPERATION VIN = 2.25V VIN = 2.25V V 90 500 IN = 3.3V 500 VIN = 3.3V VIN = 5.5V VIN = 5.5V 80 450 450 70 400 400 FORCED 60 CONTINUOUS (mΩ) (mΩ) 350 350 50 MODE 40 R DS(ON) 300 R DS(ON) 300 EFFICIENCY (%) VOUT = 1.8V 30 fOSC = 2MHz 250 250 L = 2.2µH 20 VIN = 2.25V 200 200 10 VIN = 3.3V VIN = 5.5V 150 150 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 1 10 100 1000 TEMPERATURE (°C) TEMPERATURE (°C) LOAD CURRENT (mA) 3374 G17 3374 G18 3374 G19
1A Buck Efficiency vs ILOAD, 2A Buck Efficiency vs ILOAD, 2A Buck Efficiency vs ILOAD, VOUT = 2.5V VOUT = 1.8V VOUT = 2.5V
100 100 100 90 90 90 Burst Mode Burst Mode Burst Mode 80 OPERATION 80 OPERATION 80 OPERATION 70 70 70 FORCED FORCED FORCED 60 CONTINUOUS 60 CONTINUOUS 60 CONTINUOUS MODE 50 MODE 50 MODE 50 40 40 V 40 EFFICIENCY (%) VOUT = 2.5V EFFICIENCY (%) OUT = 1.8V EFFICIENCY (%) VOUT = 2.5V 30 fOSC = 2MHz 30 fOSC = 2MHz 30 fOSC = 2MHz L = 2.2µH L = 2.2µH L = 2.2µH 20 V 20 20 IN = 2.7V VIN = 2.25V VIN = 2.7V 10 VIN = 3.3V 10 VIN = 3.3V 10 VIN = 3.3V VIN = 5.5V VIN = 5.5V VIN = 5.5V 0 0 0 1 10 100 1000 1 10 100 1000 1 10 100 1000 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA) 3374 G20 3374 G21 3374 G22
3A Buck Efficiency vs ILOAD, 3A Buck Efficiency vs ILOAD, VOUT = 1.8V VOUT = 2.5V
100 100 90 90 80 80 Burst Mode 70 Burst Mode 70 OPERATION OPERATION 60 FORCED FORCED 60 CONTINUOUS 50 CONTINUOUS 50 MODE MODE 40 40 EFFICIENCY (%) VOUT = 1.8V EFFICIENCY (%) VOUT = 2.5V 30 fOSC = 2MHz 30 fOSC = 2MHz L = 2.2µH L = 2.2µH 20 V 20 IN = 2.25V VIN = 2.7V 10 VIN = 3.3V 10 VIN = 3.3V VIN = 5.5V VIN = 5.5V 0 0 1 10 100 1000 1 10 100 1000 LOAD CURRENT (mA) LOAD CURRENT (mA) 3374 G23 3374 G24 3374fc 8 For more information www.linear.com/LTC3374 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Buck Switching Regulators Buck Regulators with Combined Power Stages Power Failure Reporting Via PGOOD_ALL Pin Temperature Monitoring and Overtemperature Protection Programming the Operating Frequency Applications Information Buck Switching Regulator Output Voltage and Feedback Network Buck Regulators Combined Buck Regulators Input and Output Decoupling Capacitor Selection PCB Considerations Package Description Revision History Typical Application Related Parts