Datasheet LT3995 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | 60V, 3A, 2MHz Step-Down Switching Regulator with 2.7μA Quiescent Current |
| 页数 / 页 | 24 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| 文件格式/大小 | PDF / 356 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Efficiency at 5VOUT. Efficiency at 3.3VOUT
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LT3995
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Efficiency at 5VOUT Efficiency at 3.3VOUT Efficiency at 5VOUT
100 90 100 L: MSS1260-682ML 95 85 90 fSW = 500kHz 90 80 80 85 75 70 80 70 60 75 65 50 70 60 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 65 55 30 12V 12V 12V 60 24V 50 24V 20 24V 55 L: MSS1260-682ML 36V 45 L: MSS1260-822ML 36V 10 36V f 48V SW = 500kHz f 48V SW = 300kHz 48V 50 40 0 0 0.5 1 1.5 2 2.5 3 0 0.5 1 1.5 2 2.5 3 0.01 0.1 1 10 100 1000 10000 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (mA) 3995 G01 3995 G02 3995 G03
Efficiency at 3.3VOUT No-Load Supply Current No-Load Supply Current
100 4.5 10000 L: MSS1260-822ML IN REGULATION FRONT PAGE APPLICATION 90 fSW = 300kHz V V 4.0 OUT = 3.3V IN = 12V 80 VOUT = 3.3V 1000 70 3.5 60 3.0 DUE TO CATCH 50 100 DIODE LEAKAGE 40 2.5 EFFICIENCY (%) 30 INPUT CURRENT (µA) 2.0 INPUT CURRENT (µA) 12V 10 20 24V 1.5 10 36V 48V 0 1.0 1 0.01 0.1 1 10 100 1000 10000 0 5 10 15 20 25 30 35 40 45 50 55 60 –55 –25 5 35 65 95 125 155 LOAD CURRENT (mA) INPUT VOLTAGE (V) TEMPERATURE (°C) 3995 G04 3975 G06 3995 G05
Reference Voltage Load Regulation Line Regulation
1.230 0.20 0.15 V 1.225 VIN = 12V OUT = 5V 0.15 VOUT = 5V LOAD = 1A 1.220 0.10 1.215 0.10 1.210 (%) 0.05 0.05 (%) 1.205 OUT OUT 1.200 0 0 1.195 –0.05 1.190 –0.05 CHANGE IN V CHANGE IN V REFERENCE VOLTAGE (V) 1.185 –0.10 1.180 –0.10 –0.15 1.175 1.170 –0.20 –0.15 –55 –25 5 35 65 95 125 155 0 0.5 1 1.5 2 2.5 3 5 10 15 20 25 30 35 40 45 50 55 60 TEMPERATURE (°C) LOAD CURRENT (A) INPUT VOLAGE (V) 3995 G07 3995 G08 3995 G09 3995f 4 For more information www.linear.com/LT3995 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Efficiency at 5VOUT Efficiency at 3.3VOUT Efficiency at 5VOUT
100 90 100 L: MSS1260-682ML 95 85 90 fSW = 500kHz 90 80 80 85 75 70 80 70 60 75 65 50 70 60 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 65 55 30 12V 12V 12V 60 24V 50 24V 20 24V 55 L: MSS1260-682ML 36V 45 L: MSS1260-822ML 36V 10 36V f 48V SW = 500kHz f 48V SW = 300kHz 48V 50 40 0 0 0.5 1 1.5 2 2.5 3 0 0.5 1 1.5 2 2.5 3 0.01 0.1 1 10 100 1000 10000 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (mA) 3995 G01 3995 G02 3995 G03
Efficiency at 3.3VOUT No-Load Supply Current No-Load Supply Current
100 4.5 10000 L: MSS1260-822ML IN REGULATION FRONT PAGE APPLICATION 90 fSW = 300kHz V V 4.0 OUT = 3.3V IN = 12V 80 VOUT = 3.3V 1000 70 3.5 60 3.0 DUE TO CATCH 50 100 DIODE LEAKAGE 40 2.5 EFFICIENCY (%) 30 INPUT CURRENT (µA) 2.0 INPUT CURRENT (µA) 12V 10 20 24V 1.5 10 36V 48V 0 1.0 1 0.01 0.1 1 10 100 1000 10000 0 5 10 15 20 25 30 35 40 45 50 55 60 –55 –25 5 35 65 95 125 155 LOAD CURRENT (mA) INPUT VOLTAGE (V) TEMPERATURE (°C) 3995 G04 3975 G06 3995 G05
Reference Voltage Load Regulation Line Regulation
1.230 0.20 0.15 V 1.225 VIN = 12V OUT = 5V 0.15 VOUT = 5V LOAD = 1A 1.220 0.10 1.215 0.10 1.210 (%) 0.05 0.05 (%) 1.205 OUT OUT 1.200 0 0 1.195 –0.05 1.190 –0.05 CHANGE IN V CHANGE IN V REFERENCE VOLTAGE (V) 1.185 –0.10 1.180 –0.10 –0.15 1.175 1.170 –0.20 –0.15 –55 –25 5 35 65 95 125 155 0 0.5 1 1.5 2 2.5 3 5 10 15 20 25 30 35 40 45 50 55 60 TEMPERATURE (°C) LOAD CURRENT (A) INPUT VOLAGE (V) 3995 G07 3995 G08 3995 G09 3995f 4 For more information www.linear.com/LT3995 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts