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LT3420EMS Datasheet(PDF) 4 Page - Linear Technology |
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LT3420EMS Datasheet(HTML) 4 Page - Linear Technology |
4 / 20 page LT3420/LT3420-1 4 3420fa Output Voltage in Refresh Mode, LT3420-1 TEMPERATURE ( °C) –50 100 3420 G04 050 335 330 325 320 315 310 305 300 295 –25 25 75 125 FIGURE 2 CIRCUIT VCC = 3.3V VBAT = 3.3V VIN (V) 2.5 5.5 3420 G05 5.0 3.0 4.0 3.5 4.5 6.0 FIGURE 2 CIRCUIT VCC = VIN VBAT = VIN TA = 25°C 335 330 325 320 315 310 305 300 295 VBAT (V) 2 6 3420 G06 3 4 5 10 8 6 4 2 0 FIGURE 2 CIRCUIT VOUT CHARGED FROM 50V TO 320V TA = 25°C COUT = 100µF COUT = 40µF Output Voltage in Refresh Mode, LT3420-1 Charge Pin Input Current Primary Current Limit, LT3420 Secondary Current Limit, LT3420 Charge Time, LT3420-1 CHARGE PIN VOLTAGE (V) 2 10 8 6 4 2 0 57 10 3420 G07 34 6 89 TA = 25°C TEMPERATURE ( °C) –50 3420 G08 0 50 100 1.7 1.5 1.3 1.1 0.9 –25 25 75 125 TEMPERATURE ( °C) –50 100 3420 G09 050 60 55 50 45 40 35 30 25 20 –25 25 75 125 Efficiency of Figure 1 Circuit, LT3420 Primary Current Limit, LT3420-1 Secondary Current Limit, LT3420-1 3420 G10 90 80 70 60 50 40 VOUT (V) 100 200 300 50 150 350 250 VCC = VBAT = VIN VIN = 3.3V VIN = 5V TA = 25°C TEMPERATURE ( °C) –50 3420 G11 0 50 100 1.2 1.1 1.0 0.9 0.8 –25 25 75 125 TEMPERATURE ( °C) –50 100 3420 G12 050 35 30 25 20 15 10 5 –25 25 75 125 Graphs apply to both the LT3420 and LT34201-1 unless otherwise noted. TYPICAL PERFOR A CE CHARACTERISTICS |
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