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SC4539 Datasheet(PDF) 5 Page - Semtech Corporation |
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SC4539 Datasheet(HTML) 5 Page - Semtech Corporation |
5 / 14 page 5 Typical Characteristics SC4539 Efficiency vs. I BL 0 20 40 60 80 100 0 612 18 24 30 2.8VIN 3.6VIN 5.5VIN I BL (mA) Efficiency vs. Input Voltage 70 74 78 82 86 90 2.8 3.3 3.9 4.4 5.0 5.5 10mA 20mA 30mA V IN (V) 70 74 78 82 86 90 2.8 3.3 3.9 4.4 5.0 5.5 VOUT LED V IN (V) Efficiency vs. Input Voltage 70 74 78 82 86 90 0 5 10 15 20 25 3.3VIN 5.5VIN 2.8VIN Efficiency vs. Output Voltage V OUT (V) 70 74 78 82 86 90 2.8 3.3 3.9 4.4 5.0 5.5 6 LED 4 LED Efficiency vs. Input Voltage V IN (V) -6.0 -4.0 -2.0 0.0 2.0 4.0 6.0 0 5 10 15 20 25 Normalized I BL vs. Output Voltage V OUT (V) All data taken with V OUT = 20V (6 white LEDs), R ISET = 5.76kΩ (I BL = 20mA), V IN = 3.6V, L = 22μH, and efficiency (η) = P LED /P IN unless otherwise noted. |
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Similar Description - SC4539 |
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