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LT3972EMSE-PBF Datasheet(PDF) 4 Page - Linear Technology |
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LT3972EMSE-PBF Datasheet(HTML) 4 Page - Linear Technology |
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4 / 24 page  LT3972 4 3972f INPUT VOLTAGE (V) 0 15 3680 G04 50 30 510 20 10 130 110 90 70 25 30 35 VOUT = 3.3V DUTY CYCLE (%) 0 40 3680 G08 4.5 20 60 3.5 3.0 6.0 5.5 5.0 4.0 80 100 TEMPERATURE (°C) –50 350 25 3680 G05 200 100 –25 0 50 50 0 400 300 250 150 75 100 150 125 VIN = 12V VOUT = 3.3V CATCH DIODE: DIODES, INC. PDS360 INCREASED SUPPLY CURRENT DUE TO CATCH DIODE LEAKAGE AT HIGH TEMPERATURE OUTPUT CURRENT (A) 0 0.5 50 70 100 1 2 2.5 3680 G01 60 90 80 1.5 3 3.5 VIN = 12V VIN = 30V VOUT = 5V L = 4.7μH f = 600kHz VIN = 24V OUTPUT CURRENT (A) 0 0.5 50 70 100 1 2 2.5 3680 G02 60 90 80 1.5 3 3.5 VIN = 12V VIN = 30V VOUT = 3.3V L = 3.3μH f = 600kHz VIN = 24V INPUT VOLTAGE (V) 5 15 3680 G07 4.5 10 20 3.5 3.0 5.5 5.0 4.0 25 30 TYPICAL MINIMUM VOUT = 5V TA = 25°C L = 4.7μH f = 600kHz INPUT VOLTAGE (V) 5 15 3680 G06 4.0 10 20 3.0 2.5 5.5 5.0 4.5 3.5 25 30 TYPICAL MINIMUM VOUT = 3.3V TA = 25°C L = 4.7μH f = 600kHz TEMPERATURE (°C) 4.0 4.5 5.5 5.0 3680 G09 3.5 3.0 2.0 2.5 6.5 6.0 DUTY CYCLE = 10 % DUTY CYCLE = 90 % –50 25 –25 0 50 75 100 150 125 Efficiency Efficiency No Load Supply Current Maximum Load Current Switch Current Limit Switch Current Limit Maximum Load Current No Load Supply Current Efficiency TA = 25°C unless otherwise noted. OUTPUT CURRENT (A) 0 0.5 50 70 100 1 2 2.5 3680 G03 60 90 80 0.5 1.5 3.0 1.0 2.5 2.0 1.5 3 3.5 VIN = 12V VOUT = 5V L = 4.7μH f = 600kHz TYPICAL PERFORMANCE CHARACTERISTICS |
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