Datasheet LTC3418 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | 8A, 4MHz, Monolithic Synchronous Step-Down Regulator |
| 页数 / 页 | 22 / 4 — Typical perForMance characTerisTics TA = 25°C unless otherwise noted. … |
| 文件格式/大小 | PDF / 494 Kb |
| 文件语言 | 英语 |
Typical perForMance characTerisTics TA = 25°C unless otherwise noted. Internal Reference Voltage. Switch On-Resistance
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LTC3418
Typical perForMance characTerisTics TA = 25°C unless otherwise noted. Internal Reference Voltage Switch On-Resistance vs Temperature vs Input Voltage On-Resistance vs Temperature
0.8000 45 50 V V IN = 3.3V IN = 3.3V 40 45 0.7995 35 40 0.7990 PFET ) PFET 30 Ω 35 0.7985 NFET 30 NFET 25 0.7980 ANCE (mΩ) ANCE (m 25 20 20 0.7975 15 ON-RESIST ON-RESIST 15 REFERENCE VOLTAGE (V) 0.7970 10 10 0.7965 5 5 0.7960 0 0 –40 –20 0 20 40 60 80 100 120 2.25 2.75 3.25 3.75 4.25 4.75 5.25 –40 –20 0 20 40 60 80 100 120 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 3418 G01 3418 G02 3418 G03
Quiescent Current Switch Leakage vs Input Voltage vs Input Voltage Frequency vs ROSC
5.0 500 4500 VIN = 3.3V 4.5 450 4000 4.0 400 3500 3.5 350 3000 3.0 300 2500 2.5 250 2000 2.0 200 NFET 1500 1.5 150 FREQUENCY (kHz) LEAKAGE CURRENT (nA) QUIESCENT CURRENT (µA) 1.0 100 1000 PFET 0.5 50 500 0 0 0 2.25 2.75 3.25 3.75 4.25 4.75 5.25 2.5 3 3.5 4 4.5 5 5.5 10 50 90 130 170 210 250 INPUT VOLTAGE (V) INPUT VOLTAGE (V) ROSC (kΩ) 3418 G05 3418 G04 3418 G06
Efficiency and Power Loss Frequency vs Temperature Frequency vs Input Voltage vs Load Current
1100 1100 100 100000 VIN = 3.3V 1080 1080 90 EFFICIENCY 1060 1060 10000 80 POWER LOSS (mW) 1040 1040 70 1020 1020 1000 1000 1000 60 POWER LOSS 980 980 100 EFFICIENCY (%) 50 FREQUENCY (kHz) FREQUENCY (kHz) 960 960 40 940 940 10 30 920 920 VIN = 3.3V VOUT = 2.5V 900 900 20 1 –40 –20 0 20 40 60 80 100 120 2.25 2.75 3.25 3.75 4.25 4.75 5.25 0.01 0.1 1 10 TEMPERATURE (°C) INPUT VOLTAGE (V) LOAD CURRENT (A) 3418 G09 3418 G07 3418 G08 3418fc 4 For more information www.linear.com/LTC3418 Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Typical Application Related Parts
Typical perForMance characTerisTics TA = 25°C unless otherwise noted. Internal Reference Voltage Switch On-Resistance vs Temperature vs Input Voltage On-Resistance vs Temperature
0.8000 45 50 V V IN = 3.3V IN = 3.3V 40 45 0.7995 35 40 0.7990 PFET ) PFET 30 Ω 35 0.7985 NFET 30 NFET 25 0.7980 ANCE (mΩ) ANCE (m 25 20 20 0.7975 15 ON-RESIST ON-RESIST 15 REFERENCE VOLTAGE (V) 0.7970 10 10 0.7965 5 5 0.7960 0 0 –40 –20 0 20 40 60 80 100 120 2.25 2.75 3.25 3.75 4.25 4.75 5.25 –40 –20 0 20 40 60 80 100 120 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 3418 G01 3418 G02 3418 G03
Quiescent Current Switch Leakage vs Input Voltage vs Input Voltage Frequency vs ROSC
5.0 500 4500 VIN = 3.3V 4.5 450 4000 4.0 400 3500 3.5 350 3000 3.0 300 2500 2.5 250 2000 2.0 200 NFET 1500 1.5 150 FREQUENCY (kHz) LEAKAGE CURRENT (nA) QUIESCENT CURRENT (µA) 1.0 100 1000 PFET 0.5 50 500 0 0 0 2.25 2.75 3.25 3.75 4.25 4.75 5.25 2.5 3 3.5 4 4.5 5 5.5 10 50 90 130 170 210 250 INPUT VOLTAGE (V) INPUT VOLTAGE (V) ROSC (kΩ) 3418 G05 3418 G04 3418 G06
Efficiency and Power Loss Frequency vs Temperature Frequency vs Input Voltage vs Load Current
1100 1100 100 100000 VIN = 3.3V 1080 1080 90 EFFICIENCY 1060 1060 10000 80 POWER LOSS (mW) 1040 1040 70 1020 1020 1000 1000 1000 60 POWER LOSS 980 980 100 EFFICIENCY (%) 50 FREQUENCY (kHz) FREQUENCY (kHz) 960 960 40 940 940 10 30 920 920 VIN = 3.3V VOUT = 2.5V 900 900 20 1 –40 –20 0 20 40 60 80 100 120 2.25 2.75 3.25 3.75 4.25 4.75 5.25 0.01 0.1 1 10 TEMPERATURE (°C) INPUT VOLTAGE (V) LOAD CURRENT (A) 3418 G09 3418 G07 3418 G08 3418fc 4 For more information www.linear.com/LTC3418 Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Typical Application Related Parts