Datasheet LTC3604 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | 2.5A, 15V Monolithic Synchronous Step-Down Regulator |
| 页数 / 页 | 26 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25°C, VIN = 12V, fO = 1MHz, L = … |
| 文件格式/大小 | PDF / 394 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25°C, VIN = 12V, fO = 1MHz, L = 1.5µH unless otherwise noted
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LTC3604
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 12V, fO = 1MHz, L = 1.5µH unless otherwise noted. Output Ripple Voltage Output Ripple Voltage Burst Mode Operation Forced Continuous Mode Output Tracking
VOUT SW SW 5V/DIV 1V/DIV 5V/DIV TRACK VOUT 20mV/DIV VOUT AC-COUPLED 20mV/DIV 0.5V/DIV AC-COUPLED VFB IL 1A/DIV IL 1A/DIV 2µs/DIV 3604 G15 VIN = 12V 2µs/DIV 3604 G16 VIN = 12V 2ms/DIV 3604 G17 VIN = 12V VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V ILOAD = 180mA ILOAD = 180mA RLOAD = 36Ω
Start-Up Into Pre-Biased Output Start-Up from Shutdown Start-Up from Shutdown (1V Pre-Bias) Burst Mode Burst Mode Operation Forced Continuous Mode Operation
RUN RUN RUN 2V/DIV 2V/DIV 2V/DIV PGOOD PGOOD PGOOD 5V/DIV 5V/DIV 5V/DIV VOUT VOUT VOUT 1V/DIV 1V/DIV 1V/DIV IL IL IL 2A/DIV 2A/DIV 1A/DIV 200µs/DIV 3604 G18 V 3604 G19 3604 G20 IN = 12V VIN = 12V 200µs/DIV VIN = 12V 1ms/DIV VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V ILOAD = 2.5A ILOAD = 2.5A ILOAD = 20mA
Load Step Load Step Short-Circuit Waveforms Burst Mode Operation Forced Continuous Mode Forced Continuous Mode
PGOOD VOUT VOUT 2V/DIV 100mV/DIV 100mV/DIV AC-COUPLED AC-COUPLED VOUT 1V/DIV I I L L 2A/DIV 2A/DIV I I L LOAD ILOAD 2A/DIV 2A/DIV 2A/DIV 10µs/DIV 3604 G21 V 3604 G22 IN = 12V VIN = 12V 10µs/DIV 100µs/DIV 3604 G23 VIN = 12V VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V ILOAD = 250mA TO 2.5A ILOAD = 250mA TO 2.5A 3604fa 6 For more information www.linear.com/LTC3604 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Operation Applications Information Typical Applications Package Description Revision History Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 12V, fO = 1MHz, L = 1.5µH unless otherwise noted. Output Ripple Voltage Output Ripple Voltage Burst Mode Operation Forced Continuous Mode Output Tracking
VOUT SW SW 5V/DIV 1V/DIV 5V/DIV TRACK VOUT 20mV/DIV VOUT AC-COUPLED 20mV/DIV 0.5V/DIV AC-COUPLED VFB IL 1A/DIV IL 1A/DIV 2µs/DIV 3604 G15 VIN = 12V 2µs/DIV 3604 G16 VIN = 12V 2ms/DIV 3604 G17 VIN = 12V VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V ILOAD = 180mA ILOAD = 180mA RLOAD = 36Ω
Start-Up Into Pre-Biased Output Start-Up from Shutdown Start-Up from Shutdown (1V Pre-Bias) Burst Mode Burst Mode Operation Forced Continuous Mode Operation
RUN RUN RUN 2V/DIV 2V/DIV 2V/DIV PGOOD PGOOD PGOOD 5V/DIV 5V/DIV 5V/DIV VOUT VOUT VOUT 1V/DIV 1V/DIV 1V/DIV IL IL IL 2A/DIV 2A/DIV 1A/DIV 200µs/DIV 3604 G18 V 3604 G19 3604 G20 IN = 12V VIN = 12V 200µs/DIV VIN = 12V 1ms/DIV VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V ILOAD = 2.5A ILOAD = 2.5A ILOAD = 20mA
Load Step Load Step Short-Circuit Waveforms Burst Mode Operation Forced Continuous Mode Forced Continuous Mode
PGOOD VOUT VOUT 2V/DIV 100mV/DIV 100mV/DIV AC-COUPLED AC-COUPLED VOUT 1V/DIV I I L L 2A/DIV 2A/DIV I I L LOAD ILOAD 2A/DIV 2A/DIV 2A/DIV 10µs/DIV 3604 G21 V 3604 G22 IN = 12V VIN = 12V 10µs/DIV 100µs/DIV 3604 G23 VIN = 12V VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V ILOAD = 250mA TO 2.5A ILOAD = 250mA TO 2.5A 3604fa 6 For more information www.linear.com/LTC3604 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Operation Applications Information Typical Applications Package Description Revision History Related Parts