Datasheet LTC3605 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | 15V, 5A Synchronous Step-Down Regulator |
| 页数 / 页 | 22 / 5 — Typical perForMance characTerisTics TA = 25°C unless otherwise specified. … |
| 文件格式/大小 | PDF / 341 Kb |
| 文件语言 | 英语 |
Typical perForMance characTerisTics TA = 25°C unless otherwise specified. Switch Leakage vs VIN. Efficiency vs VIN
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LTC3605
Typical perForMance characTerisTics TA = 25°C unless otherwise specified. Switch Leakage vs VIN Efficiency vs VIN Frequency vs VON Voltage
350 98 1.6 VOUT = 3.3V VIN = 14V R 300 96 1.4 T = 162k ILOAD = 1A 1.2 250 BOTTOM SWITCH 94 1.0 200 92 0.8 150 90 EFFICIENCY (%) 0.6 FREQUENCY (MHz) SWITCH LEAKAGE (nA) 100 88 ILOAD = 5A 0.4 50 86 0.2 TOP SWITCH 0 84 0 0 4 8 12 16 20 0 3 6 9 12 15 0 2 4 6 8 10 12 14 VIN (V) VIN (V) VON (V) 3605 G10 3605 G11 3605 G12
Current Limit Foldback INTVCC Load Regulation RUN Pin Threshold vs Temperature
120 101 1.30 TA = 25°C 100 100 99 1.25 98 80 (%) CC 97 1.20 96 60 1.15 95 40 94 1.10 93 RUN THRESHOLD (V) NORMALIZED INTV 20 92 1.05 91 NORMALIZED MAXIMUM OUTPUT CURRENT (%) 0 90 1.00 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0 20 40 60 80 100 120 140 –40 –15 10 35 60 85 110 VFB (V) INTVCC OUTPUT CURRENT (mA) TEMPERATURE (°C) 3605 G13 3605 G14 3605 G15
DCM Operation CCM Operation
CLKOUT CLKOUT 2V/DIV 2V/DIV VSW VSW 5V/DIV 5V/DIV IL 2A/DIV IL 2A/DIV VIN = 12V 400ns/DIV 3605 G16 VIN = 12V 400ns/DIV 3605 G17 VOUT = 1.2V VOUT = 1.2V MODE = 0 MODE = 3.3V IOUT = 0 PHMODE = 3.3V L1 = 0.33µH IOUT = 0 L1 = 0.33µH 3605fh For more information www.linear.com/LTC3605 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Typical Applications Package Description Revision History Typical Application Related Parts
Typical perForMance characTerisTics TA = 25°C unless otherwise specified. Switch Leakage vs VIN Efficiency vs VIN Frequency vs VON Voltage
350 98 1.6 VOUT = 3.3V VIN = 14V R 300 96 1.4 T = 162k ILOAD = 1A 1.2 250 BOTTOM SWITCH 94 1.0 200 92 0.8 150 90 EFFICIENCY (%) 0.6 FREQUENCY (MHz) SWITCH LEAKAGE (nA) 100 88 ILOAD = 5A 0.4 50 86 0.2 TOP SWITCH 0 84 0 0 4 8 12 16 20 0 3 6 9 12 15 0 2 4 6 8 10 12 14 VIN (V) VIN (V) VON (V) 3605 G10 3605 G11 3605 G12
Current Limit Foldback INTVCC Load Regulation RUN Pin Threshold vs Temperature
120 101 1.30 TA = 25°C 100 100 99 1.25 98 80 (%) CC 97 1.20 96 60 1.15 95 40 94 1.10 93 RUN THRESHOLD (V) NORMALIZED INTV 20 92 1.05 91 NORMALIZED MAXIMUM OUTPUT CURRENT (%) 0 90 1.00 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0 20 40 60 80 100 120 140 –40 –15 10 35 60 85 110 VFB (V) INTVCC OUTPUT CURRENT (mA) TEMPERATURE (°C) 3605 G13 3605 G14 3605 G15
DCM Operation CCM Operation
CLKOUT CLKOUT 2V/DIV 2V/DIV VSW VSW 5V/DIV 5V/DIV IL 2A/DIV IL 2A/DIV VIN = 12V 400ns/DIV 3605 G16 VIN = 12V 400ns/DIV 3605 G17 VOUT = 1.2V VOUT = 1.2V MODE = 0 MODE = 3.3V IOUT = 0 PHMODE = 3.3V L1 = 0.33µH IOUT = 0 L1 = 0.33µH 3605fh For more information www.linear.com/LTC3605 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Typical Applications Package Description Revision History Typical Application Related Parts