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LTC3521 Datasheet(PDF) 5 Page - Linear Technology |
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LTC3521 Datasheet(HTML) 5 Page - Linear Technology |
5 / 20 page LTC3521 3521f Buck-Boost Feedback Voltage vs Temperature Typical perForMance characTerisTics Buck Feedback Voltage vs Temperature Buck-Boost Maximum Load Current, Burst Mode Operation No Load Quiescent Current vs VIN Switching Frequency vs VIN Buck-Boost Maximum Load Current, PWM Mode 100 500 900 1300 300 700 1100 1500 VIN (V) 3521 G13 VOUT = 3.3V L = 4.7µH VOUT = 5V 1.8 5.3 2.8 3.8 2.3 3.3 4.3 4.8 100µs/DIV VOUT 100mV/DIV INDUCTOR CURRENT 500mA/DIV 3521 G15 VIN = 3.6V, VOUT = 3.3V L = 4.7µH COUT = 22µF Buck-Boost Load Step, 0mA to 750mA TA = 25°C, unless otherwise noted. Burst Mode Quiescent Current vs VIN VIN (V) 1.8 1.0 1.5 5.3 0.5 0 2.8 3.8 2.3 3.3 4.3 4.8 –1.5 –2.0 –0.5 2.0 –1.0 3521 G08 TEMPERATURE (°C) –40 0.1 100 0 –0.1 0 40 –20 20 60 120 80 –0.4 –0.5 –0.2 0.2 –0.3 3521 G09 TEMPERATURE (°C) –0.1 0 0.1 –0.2 –0.3 –0.4 –0.5 0.2 3521 G10 –50 –25 25 0 50 75 100 125 VIN (V) 1.8 5.3 31 2.8 3.8 2.3 3.3 4.3 4.8 25 29 33 27 3521 G11 ALL THREE CONVERTERS ENABLED VIN (V) 1.8 60 70 80 5.3 50 40 2.8 3.8 2.3 3.3 4.3 4.8 10 0 30 90 20 3521 G12 VOUT = 3V VOUT = 5V VIN (V) 1.8 5.3 2.8 3.8 2.3 3.3 4.3 4.8 45 40 55 60 50 3521 G14 |
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