Datasheet LTC3873-5 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | No RSENSE Constant Frequency Current Mode Boost/Flyback/SEPIC DC/DC Controller |
| 页数 / 页 | 16 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS. Regulated Feedback Voltage vs. … |
| 文件格式/大小 | PDF / 180 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. Regulated Feedback Voltage vs. Regulated Feedback Voltage Line. Temperature. Regulation
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LTC3873-5
TYPICAL PERFORMANCE CHARACTERISTICS Regulated Feedback Voltage vs Regulated Feedback Voltage Line Temperature Regulation ITH Voltage vs RUN/SS Voltage
1.25 1.2025 2.5 VIN = 5V 1.24 1.2020 2.0 1.23 1.2015 1.5 1.2010 TAGE (V) 1.22 TAGE (V) TAGE (V) VOL 1.21 VOL 1.2005 VOL 1.0 FBV FBV I TH 1.20 1.2000 0.5 1.19 1.1995 1.18 1.1990 0 –60 –40 –20 0 20 40 60 80 100 120 3 4 5 6 7 8 9 10 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 TEMPERATURE (°C) VIN (V) RUN/SS VOLTAGE (V) 38735 G01 38735 G02 38735 G03
Gate Drive Rise and Fall Time Shutdown Mode IQ vs VIN Shutdown IQ vs Temperature vs CLOAD
70 80 100 65 90 70 60 80 60 (μA) 55 (μA) 70 Q Q RISE TIME 50 50 60 FALL TIME 45 40 50 TIME (ns) 40 40 30 35 30 SHUTDOWN MODE I SHUTDOWN MODE I 20 30 20 25 10 10 20 0 0 3 4 5 6 7 8 9 10 –60 –40 –20 0 20 40 60 80 100 120 0 2000 4000 6000 8000 10000 VIN (V) TEMPERATURE (°C) CLOAD (pF) 3873-5 G04 3873-5 G05 38735 G06
Shunt Regulator Voltage RUN Threshold vs Temperature vs ISHUNT
1.0 10.2 10.1 0.9 10.0 9.9 0.8 RISING TAGE (V) 9.8 9.7 FALLING 0.7 TION VOL 9.6 RUN THRESHOLDS (V) 9.5 REGULA 0.6 9.4 9.3 0.5 9.2 –60 –40 –20 0 20 40 60 80 100 120 0 5 10 15 20 25 30 35 40 45 TEMPERATURE (°C) ISHUNT (mA) 38735 G07 3873-5 G08 38735fb 4
TYPICAL PERFORMANCE CHARACTERISTICS Regulated Feedback Voltage vs Regulated Feedback Voltage Line Temperature Regulation ITH Voltage vs RUN/SS Voltage
1.25 1.2025 2.5 VIN = 5V 1.24 1.2020 2.0 1.23 1.2015 1.5 1.2010 TAGE (V) 1.22 TAGE (V) TAGE (V) VOL 1.21 VOL 1.2005 VOL 1.0 FBV FBV I TH 1.20 1.2000 0.5 1.19 1.1995 1.18 1.1990 0 –60 –40 –20 0 20 40 60 80 100 120 3 4 5 6 7 8 9 10 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 TEMPERATURE (°C) VIN (V) RUN/SS VOLTAGE (V) 38735 G01 38735 G02 38735 G03
Gate Drive Rise and Fall Time Shutdown Mode IQ vs VIN Shutdown IQ vs Temperature vs CLOAD
70 80 100 65 90 70 60 80 60 (μA) 55 (μA) 70 Q Q RISE TIME 50 50 60 FALL TIME 45 40 50 TIME (ns) 40 40 30 35 30 SHUTDOWN MODE I SHUTDOWN MODE I 20 30 20 25 10 10 20 0 0 3 4 5 6 7 8 9 10 –60 –40 –20 0 20 40 60 80 100 120 0 2000 4000 6000 8000 10000 VIN (V) TEMPERATURE (°C) CLOAD (pF) 3873-5 G04 3873-5 G05 38735 G06
Shunt Regulator Voltage RUN Threshold vs Temperature vs ISHUNT
1.0 10.2 10.1 0.9 10.0 9.9 0.8 RISING TAGE (V) 9.8 9.7 FALLING 0.7 TION VOL 9.6 RUN THRESHOLDS (V) 9.5 REGULA 0.6 9.4 9.3 0.5 9.2 –60 –40 –20 0 20 40 60 80 100 120 0 5 10 15 20 25 30 35 40 45 TEMPERATURE (°C) ISHUNT (mA) 38735 G07 3873-5 G08 38735fb 4