Datasheet LTC3411A (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. TA = 25°C, VIN = 3.6V fO = 1MHz, … |
| 文件格式/大小 | PDF / 1.5 Mb |
| 文件语言 | 英语 |
Typical perForMance characTerisTics. TA = 25°C, VIN = 3.6V fO = 1MHz, unless. otherwise noted. Forced Continuous Mode
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LTC3411A
Typical perForMance characTerisTics TA = 25°C, VIN = 3.6V fO = 1MHz, unless otherwise noted. Forced Continuous Mode Start-Up from Shutdown Start-Up from Shutdown
SW SHDN/RT SHDN/RT 2V/DIV 2V/DIV 2V/DIV VOUT 50mV/DIV AC COUPLED VOUT VOUT 1V/DIV I 1V/DIV L 200mA/DIV IL IL 1A/DIV 1A/DIV 3411A G19 2µs/DIV 3411A G20 200µs/DIV 3411A G21 200µs/DIV VIN = 3.6V VIN = 3.6V VIN = 3.6V VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V ILOAD = 80mA ILOAD = 0A ILOAD = 1.25A
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 3411A G22 200µs/DIV 3411A G23 40µs/DIV 3411A 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
V Load Step V OUT Short to VIN (Forced OUT Short to Ground Continuous Mode)
VOUT VOUT 1V/DIV 100mV/DIV AC COUPLED VOUT 1V/DIV IL 1A/DIV IL IL 2A/DIV 500mA/DIV ILOAD 1A/DIV 3411A G25 40µs/DIV 3411A G26 40µs/DIV 3411A 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 3411afd 6 For more information www.linear.com/LTC3411A 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 Applications Revision History Typical Application Related Parts
Typical perForMance characTerisTics TA = 25°C, VIN = 3.6V fO = 1MHz, unless otherwise noted. Forced Continuous Mode Start-Up from Shutdown Start-Up from Shutdown
SW SHDN/RT SHDN/RT 2V/DIV 2V/DIV 2V/DIV VOUT 50mV/DIV AC COUPLED VOUT VOUT 1V/DIV I 1V/DIV L 200mA/DIV IL IL 1A/DIV 1A/DIV 3411A G19 2µs/DIV 3411A G20 200µs/DIV 3411A G21 200µs/DIV VIN = 3.6V VIN = 3.6V VIN = 3.6V VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V ILOAD = 80mA ILOAD = 0A ILOAD = 1.25A
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 3411A G22 200µs/DIV 3411A G23 40µs/DIV 3411A 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
V Load Step V OUT Short to VIN (Forced OUT Short to Ground Continuous Mode)
VOUT VOUT 1V/DIV 100mV/DIV AC COUPLED VOUT 1V/DIV IL 1A/DIV IL IL 2A/DIV 500mA/DIV ILOAD 1A/DIV 3411A G25 40µs/DIV 3411A G26 40µs/DIV 3411A 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 3411afd 6 For more information www.linear.com/LTC3411A 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 Applications Revision History Typical Application Related Parts