Datasheet LTC3541-3 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | High Efficiency Buck + VLDO Regulator |
| 页数 / 页 | 22 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. VLDO/Linear Regulator vs. … |
| 文件格式/大小 | PDF / 548 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. VLDO/Linear Regulator vs. Temperature. Buck Reference vs Temperature
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LTC3541-3
TYPICAL PERFORMANCE CHARACTERISTICS VLDO/Linear Regulator vs Temperature Buck Reference vs Temperature RDS(0N) vs Temperature
0.410 0.820 0.700 VIN = 3.6V VIN = 3.6V 0.408 0.816 0.600 0.406 0.812 0.404 0.808 0.500 0.402 0.804 ) ( Ω 0.400 0.400 0.800 SYNCH SWITCH 0.398 0.796 0.300 R DS(ON) REFERENCE (V) REFERENCE (V) 0.396 0.792 0.200 0.394 0.788 V 0.100 IN = 2.5V MAIN SWITCH 0.392 0.784 VIN = 3.6V VIN = 5.5V 0.390 0.780 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 35413 G10 35413 G11 35413 G12
Buck (Pulse Skip) Load Step from Buck (Burst) Load Step from 1mA Buck (Burst) and VLDO Output 1mA to 500mA to 500mA
LVOUT VOUT VOUT 10mV/DIV 100mV/DIV 100mV/DIV AC COUPLED AC COUPLED AC COUPLED V I I OUT L L 10mV/DIV 500mA/DIV 500mA/DIV AC COUPLED ILOAD ILOAD 500mA/DIV 500mA/DIV 2μs/DIV 35413 G13 VIN = 3.6V 40μs/DIV 35413 G14 VIN = 3.6V 40μs/DIV 35413 G15 VIN = 3.6V LVOUT = 1.5V VOUT = 1.8V VOUT = 1.8V VOUT = 1.875V ILOAD = 1mA TO 500mA ILOAD = 1mA TO 500mA ILOAD = 50mA Burst Mode OPERATION
VLDO Load Step from 1mA to VLDO Load Step from 100mA to 300mA 300mA
LVOUT 20mV/DIV LVOUT AC COUPLED 20mV/DIV AC COUPLED ILOAD 250mA/DIV ILOAD 250mA/DIV 400μs/DIV 35413 G16 VIN = 3.6V 400μs/DIV 35413 G17 VIN = 3.6V VOUT = 1.575V VOUT = 1.575V ILOAD = 1mA TO 300mA ILOAD = 100mA TO 300mA 35413fd 6 For more information www.linear.com/LTC3541-3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS VLDO/Linear Regulator vs Temperature Buck Reference vs Temperature RDS(0N) vs Temperature
0.410 0.820 0.700 VIN = 3.6V VIN = 3.6V 0.408 0.816 0.600 0.406 0.812 0.404 0.808 0.500 0.402 0.804 ) ( Ω 0.400 0.400 0.800 SYNCH SWITCH 0.398 0.796 0.300 R DS(ON) REFERENCE (V) REFERENCE (V) 0.396 0.792 0.200 0.394 0.788 V 0.100 IN = 2.5V MAIN SWITCH 0.392 0.784 VIN = 3.6V VIN = 5.5V 0.390 0.780 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 35413 G10 35413 G11 35413 G12
Buck (Pulse Skip) Load Step from Buck (Burst) Load Step from 1mA Buck (Burst) and VLDO Output 1mA to 500mA to 500mA
LVOUT VOUT VOUT 10mV/DIV 100mV/DIV 100mV/DIV AC COUPLED AC COUPLED AC COUPLED V I I OUT L L 10mV/DIV 500mA/DIV 500mA/DIV AC COUPLED ILOAD ILOAD 500mA/DIV 500mA/DIV 2μs/DIV 35413 G13 VIN = 3.6V 40μs/DIV 35413 G14 VIN = 3.6V 40μs/DIV 35413 G15 VIN = 3.6V LVOUT = 1.5V VOUT = 1.8V VOUT = 1.8V VOUT = 1.875V ILOAD = 1mA TO 500mA ILOAD = 1mA TO 500mA ILOAD = 50mA Burst Mode OPERATION
VLDO Load Step from 1mA to VLDO Load Step from 100mA to 300mA 300mA
LVOUT 20mV/DIV LVOUT AC COUPLED 20mV/DIV AC COUPLED ILOAD 250mA/DIV ILOAD 250mA/DIV 400μs/DIV 35413 G16 VIN = 3.6V 400μs/DIV 35413 G17 VIN = 3.6V VOUT = 1.575V VOUT = 1.575V ILOAD = 1mA TO 300mA ILOAD = 100mA TO 300mA 35413fd 6 For more information www.linear.com/LTC3541-3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Related Parts