Datasheet LT8495 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | SEPIC/Boost Converter with 2A, 70V Switch, 9μA Quiescent Current, POR and Watchdog Timer |
| 页数 / 页 | 34 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. No … |
| 文件格式/大小 | PDF / 1.3 Mb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. No Load Supply Current. Maximum Load Current
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LT8495
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. No Load Supply Current Maximum Load Current Load Regulation
100 2.5 0.15 FRONT PAGE APPLICATION FRONT PAGE APPLICATION VIN=12V 80 0.10 2.0 TYPICAL 0.05 60 1.5 TION (%) –0.00 Y CURRENT (µA) 40 1.0 MINIMUM LOAD CURRENT (A) –0.05 SUPPL LOAD REGULA 20 0.5 –0.10 VIN=12V FRONT PAGE APPLICATION REFERENCED TO VOUT AT 100mA LOAD 0 0.0 –0.15 –50 –10 30 70 110 150 0 12 24 36 48 60 0 200 400 600 800 1000 TEMPERATURE (°C) VIN (V) LOAD CURRENT (mA) LT8495 G03 8495 G01 8495 G02
Transient Load Response; Load Switching Waveforms, Switching Waveforms, Full Current Is Stepped from 300mA Burst Mode Operation Frequency Continuous Operation to 500mA
VSW VSW 10V/DIV 10V/DIV VOUT 50mV/DIV IL IL 0.5A/DIV 0.5A/DIV V I OUT V L OUT 5mV/DIV 0.5A/DIV 5mV/DIV 8495 G04 8495 G05 8495 G06 10ms/DIV 1µs/DIV 500µs/DIV FRONT PAGE APPLICATION FRONT PAGE APPLICATION FRONT PAGE APPLICATION VIN = 12V VIN = 12V VIN = 12V VOUT = 5V VOUT = 5V VOUT = 5V ILOAD = 20mA ILOAD = 0.5A
Transient Load Response; Load Current Is Stepped from 20mA Switch Current Limit at Minimum (Burst Mode Operation) to 220mA Switch Current Limit at 500kHz Duty Cycle
3.0 3.0 2.5 2.5 VOUT 100mV/DIV 2.0 2.0 1.5 1.5 IL 0.5A/DIV 1.0 1.0 SWITCH CURRENT LIMIT (A) SWITCH CURRENT LIMIT (A) 8495 G07 0.5 500µs/DIV 0.5 FRONT PAGE APPLICATION VIN = 12V 0.0 0.0 VOUT = 5V 10 20 30 40 50 60 70 80 90 –50 0 50 100 150 DUTY CYCLE (%) TEMPERATURE (°C) 8495 G08 8495 G09 8495fb For more information www.linear.com/LT8495 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagrams Operation Applications Information Typical Applications Package Description Revision History Typical Applications Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. No Load Supply Current Maximum Load Current Load Regulation
100 2.5 0.15 FRONT PAGE APPLICATION FRONT PAGE APPLICATION VIN=12V 80 0.10 2.0 TYPICAL 0.05 60 1.5 TION (%) –0.00 Y CURRENT (µA) 40 1.0 MINIMUM LOAD CURRENT (A) –0.05 SUPPL LOAD REGULA 20 0.5 –0.10 VIN=12V FRONT PAGE APPLICATION REFERENCED TO VOUT AT 100mA LOAD 0 0.0 –0.15 –50 –10 30 70 110 150 0 12 24 36 48 60 0 200 400 600 800 1000 TEMPERATURE (°C) VIN (V) LOAD CURRENT (mA) LT8495 G03 8495 G01 8495 G02
Transient Load Response; Load Switching Waveforms, Switching Waveforms, Full Current Is Stepped from 300mA Burst Mode Operation Frequency Continuous Operation to 500mA
VSW VSW 10V/DIV 10V/DIV VOUT 50mV/DIV IL IL 0.5A/DIV 0.5A/DIV V I OUT V L OUT 5mV/DIV 0.5A/DIV 5mV/DIV 8495 G04 8495 G05 8495 G06 10ms/DIV 1µs/DIV 500µs/DIV FRONT PAGE APPLICATION FRONT PAGE APPLICATION FRONT PAGE APPLICATION VIN = 12V VIN = 12V VIN = 12V VOUT = 5V VOUT = 5V VOUT = 5V ILOAD = 20mA ILOAD = 0.5A
Transient Load Response; Load Current Is Stepped from 20mA Switch Current Limit at Minimum (Burst Mode Operation) to 220mA Switch Current Limit at 500kHz Duty Cycle
3.0 3.0 2.5 2.5 VOUT 100mV/DIV 2.0 2.0 1.5 1.5 IL 0.5A/DIV 1.0 1.0 SWITCH CURRENT LIMIT (A) SWITCH CURRENT LIMIT (A) 8495 G07 0.5 500µs/DIV 0.5 FRONT PAGE APPLICATION VIN = 12V 0.0 0.0 VOUT = 5V 10 20 30 40 50 60 70 80 90 –50 0 50 100 150 DUTY CYCLE (%) TEMPERATURE (°C) 8495 G08 8495 G09 8495fb For more information www.linear.com/LT8495 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagrams Operation Applications Information Typical Applications Package Description Revision History Typical Applications Related Parts