Datasheet LTC3543 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | 600mA Synchronous Step Down Buck Regulator with PLL, Soft-Start and Spread Spectrum |
| 页数 / 页 | 20 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| 文件格式/大小 | PDF / 342 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Load Step. Spread Spectrum Load Step. PLL Operation
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LTC3543
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Load Step Load Step
VOUT VOUT AC COUPLED AC COUPLED 100mV/DIV 200mV/DIV IL IL 200mA/DIV 200mA/DIV ILOAD ILOAD 200mA/DIV 200mA/DIV 20μs/DIV 20μs/DIV 3543 G22 V 3543 G23 IN = 3.6V VIN = 3.6V VOUT = 1.5V VOUT = 1.5V ILOAD = 3mA TO 200mA ILOAD = 3mA TO 200mA VMODE = 0V VMODE = 3.6V
Load Step Spread Spectrum Load Step
VOUT VOUT AC COUPLED AC COUPLED 100mV/DIV 100mV/DIV IL IL 200mA/DIV 200mA/DIV ILOAD ILOAD 200mA/DIV 200mA/DIV 10μs/DIV 10μs/DIV 3543 G24 V 3543 G25 IN = 3.6V VIN = 3.6V VOUT = 1.5V VOUT = 1.5V ILOAD = 100mA TO 600mA ILOAD = 100mA TO 200mA VMODE = 3.6V VMODE = 0.6V
PLL Operation PLL Operation at 3MHz
VC1 VMODE 200mV/DIV 2V/DIV SW 2V/DIV 100μs/DIV 100ns/DIV 3543 G26 C1 = 4μF 3543 G27 3MHz TO 1MHz STEP 3543fa 6
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Load Step Load Step
VOUT VOUT AC COUPLED AC COUPLED 100mV/DIV 200mV/DIV IL IL 200mA/DIV 200mA/DIV ILOAD ILOAD 200mA/DIV 200mA/DIV 20μs/DIV 20μs/DIV 3543 G22 V 3543 G23 IN = 3.6V VIN = 3.6V VOUT = 1.5V VOUT = 1.5V ILOAD = 3mA TO 200mA ILOAD = 3mA TO 200mA VMODE = 0V VMODE = 3.6V
Load Step Spread Spectrum Load Step
VOUT VOUT AC COUPLED AC COUPLED 100mV/DIV 100mV/DIV IL IL 200mA/DIV 200mA/DIV ILOAD ILOAD 200mA/DIV 200mA/DIV 10μs/DIV 10μs/DIV 3543 G24 V 3543 G25 IN = 3.6V VIN = 3.6V VOUT = 1.5V VOUT = 1.5V ILOAD = 100mA TO 600mA ILOAD = 100mA TO 200mA VMODE = 3.6V VMODE = 0.6V
PLL Operation PLL Operation at 3MHz
VC1 VMODE 200mV/DIV 2V/DIV SW 2V/DIV 100μs/DIV 100ns/DIV 3543 G26 C1 = 4μF 3543 G27 3MHz TO 1MHz STEP 3543fa 6