Datasheet LTC1871 (Analog Devices) - 6
| Manufacturer | Analog Devices |
| Description | Wide Input Range, No RSENSE Current Mode Boost, Flyback and SEPIC Controller |
| Pages / Page | 36 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. RUN Thresholds vs VIN. RUN … |
| File Format / Size | PDF / 534 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. RUN Thresholds vs VIN. RUN Thresholds vs Temperature. RT vs Frequency
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Text Version of Document
LTC1871
TYPICAL PERFORMANCE CHARACTERISTICS RUN Thresholds vs VIN RUN Thresholds vs Temperature RT vs Frequency
1.5 1.40 1000 1.35 1.4 1.30 (kΩ) 100 TR 1.3 RUN THRESHOLDS (V) RUN THRESHOLDS (V) 1.25 1.2 1.20 10 0 10 20 30 40 –50 –25 0 25 50 75 100 125 150 0 100 200 300 400 500 600 700 800 900 1000 VIN (V) TEMPERATURE (°C) FREQUENCY (kHz) 1871 G10 1871 G11 1871 G12
Maximum Sense Threshold SENSE Pin Current Frequency vs Temperature vs Temperature vs Temperature
325 160 35 GATE HIGH 320 VSENSE = 0V 315 155 310 305 300 150 30 295 290 GATE FREQUENCY (kHz) 145 SENSE PIN CURRENT (μA) 285 MAX SENSE THRESHOLD (mV) 280 275 140 25 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 1871 G13 1871 G14 1871 G15
INTVCC Dropout Voltage INTVCC Load Regulation INTVCC Line Regulation vs Current, Temperature
5.4 500 VIN = 7.5V 450 150°C 5.2 400 125°C 350 5.3 75°C 300 25°C 250 VOLTAGE (V) VOLTAGE (V) CC 5.1 CC 200 0°C 5.2 INTV INTV 150 DROPOUT VOLTAGE (mV) –50°C 100 50 5.0 5.1 0 0 10 20 30 40 50 60 70 80 0 5 10 15 20 25 30 35 40 0 5 10 15 20 INTV V CC LOAD (mA) IN (V) INTVCC LOAD (mA) 1871 G16 1871 G17 1871 G18 1871fe 6
TYPICAL PERFORMANCE CHARACTERISTICS RUN Thresholds vs VIN RUN Thresholds vs Temperature RT vs Frequency
1.5 1.40 1000 1.35 1.4 1.30 (kΩ) 100 TR 1.3 RUN THRESHOLDS (V) RUN THRESHOLDS (V) 1.25 1.2 1.20 10 0 10 20 30 40 –50 –25 0 25 50 75 100 125 150 0 100 200 300 400 500 600 700 800 900 1000 VIN (V) TEMPERATURE (°C) FREQUENCY (kHz) 1871 G10 1871 G11 1871 G12
Maximum Sense Threshold SENSE Pin Current Frequency vs Temperature vs Temperature vs Temperature
325 160 35 GATE HIGH 320 VSENSE = 0V 315 155 310 305 300 150 30 295 290 GATE FREQUENCY (kHz) 145 SENSE PIN CURRENT (μA) 285 MAX SENSE THRESHOLD (mV) 280 275 140 25 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 1871 G13 1871 G14 1871 G15
INTVCC Dropout Voltage INTVCC Load Regulation INTVCC Line Regulation vs Current, Temperature
5.4 500 VIN = 7.5V 450 150°C 5.2 400 125°C 350 5.3 75°C 300 25°C 250 VOLTAGE (V) VOLTAGE (V) CC 5.1 CC 200 0°C 5.2 INTV INTV 150 DROPOUT VOLTAGE (mV) –50°C 100 50 5.0 5.1 0 0 10 20 30 40 50 60 70 80 0 5 10 15 20 25 30 35 40 0 5 10 15 20 INTV V CC LOAD (mA) IN (V) INTVCC LOAD (mA) 1871 G16 1871 G17 1871 G18 1871fe 6
