Datasheet LTC3565 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | 1.25A, 4MHz, Synchronous Step-Down DC/DC Converter |
| 页数 / 页 | 22 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. TJ = 25°C, VIN = 3.6V, fO = 1MHz, … |
| 文件格式/大小 | PDF / 824 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. TJ = 25°C, VIN = 3.6V, fO = 1MHz, unless. otherwise noted. Forced Continuous Mode
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LTC3565
TYPICAL PERFORMANCE CHARACTERISTICS TJ = 25°C, VIN = 3.6V, fO = 1MHz, unless otherwise noted. Forced Continuous Mode Start-Up from Shutdown Start-Up from Shutdown
SW RUN RUN 2V/DIV 2V/DIV 2V/DIV VOUT VOUT 50mV/DIV VOUT 1V/DIV AC COUPLED 1V/DIV IL IL IL 500mA/DIV 1A/DIV 200mA/DIV 3565 G20 400µs/DIV 3565 G21 400µs/DIV V V 3565 G19 2µs/DIV IN = 3.6V IN = 3.6V VOUT = 1.8V VOUT = 1.8V VIN = 3.6V ILOAD = 0A ILOAD = 1.25A VOUT = 1.8V Burst Mode OPERATION Burst Mode OPERATION ILOAD = 80mA
Start-Up from Shutdown with a Prebiased Output (Forced Continuous Mode) Load Step Load Step
VOUT VOUT VOUT 1V/DIV 100mV/DIV 100mV/DIV AC COUPLED AC COUPLED IL IL IL 500mA/DIV 1A/DIV 1A/DIV ILOAD ILOAD 1A/DIV 1A/DIV 3565 G22 200µs/DIV 3565 G23 40µs/DIV 3565 G24 40µs/DIV VIN = 3.6V VIN = 3.6V VIN = 3.6V PREBIASED VOUT = 3V, VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V ILOAD = 0A ILOAD = 0A to 1.25A ILOAD = 50mA to 1.25A Burst Mode OPERATION Burst Mode OPERATION
VOUT Short to VIN (Forced Load Step VOUT Short to Ground Continuous Mode)
V V OUT OUT 1V/DIV 100mV/DIV AC COUPLED VOUT 1V/DIV IL 1A/DIV IL IL 2A/DIV 500mA/DIV ILOAD 1A/DIV 3565 G25 40µs/DIV 3565 G26 40µs/DIV 3565 G27 40µs/DIV VIN = 3.6V VIN = 3.6V VIN = 3.6V VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V ILOAD = 250mA to 1.25A ILOAD = 0A ILOAD = 0A Burst Mode OPERATION 3565fc 6 For more information www.linear.com/LTC3565 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Application Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TJ = 25°C, VIN = 3.6V, fO = 1MHz, unless otherwise noted. Forced Continuous Mode Start-Up from Shutdown Start-Up from Shutdown
SW RUN RUN 2V/DIV 2V/DIV 2V/DIV VOUT VOUT 50mV/DIV VOUT 1V/DIV AC COUPLED 1V/DIV IL IL IL 500mA/DIV 1A/DIV 200mA/DIV 3565 G20 400µs/DIV 3565 G21 400µs/DIV V V 3565 G19 2µs/DIV IN = 3.6V IN = 3.6V VOUT = 1.8V VOUT = 1.8V VIN = 3.6V ILOAD = 0A ILOAD = 1.25A VOUT = 1.8V Burst Mode OPERATION Burst Mode OPERATION ILOAD = 80mA
Start-Up from Shutdown with a Prebiased Output (Forced Continuous Mode) Load Step Load Step
VOUT VOUT VOUT 1V/DIV 100mV/DIV 100mV/DIV AC COUPLED AC COUPLED IL IL IL 500mA/DIV 1A/DIV 1A/DIV ILOAD ILOAD 1A/DIV 1A/DIV 3565 G22 200µs/DIV 3565 G23 40µs/DIV 3565 G24 40µs/DIV VIN = 3.6V VIN = 3.6V VIN = 3.6V PREBIASED VOUT = 3V, VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V ILOAD = 0A ILOAD = 0A to 1.25A ILOAD = 50mA to 1.25A Burst Mode OPERATION Burst Mode OPERATION
VOUT Short to VIN (Forced Load Step VOUT Short to Ground Continuous Mode)
V V OUT OUT 1V/DIV 100mV/DIV AC COUPLED VOUT 1V/DIV IL 1A/DIV IL IL 2A/DIV 500mA/DIV ILOAD 1A/DIV 3565 G25 40µs/DIV 3565 G26 40µs/DIV 3565 G27 40µs/DIV VIN = 3.6V VIN = 3.6V VIN = 3.6V VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V ILOAD = 250mA to 1.25A ILOAD = 0A ILOAD = 0A Burst Mode OPERATION 3565fc 6 For more information www.linear.com/LTC3565 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Application Package Description Revision History Typical Application Related Parts