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LT3471 Datasheet(PDF) 11 Page - Linear Technology |
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LT3471 Datasheet(HTML) 11 Page - Linear Technology |
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11 / 16 page  11 LT3471 3471f TYPICAL APPLICATIO S RSS1 4.7k RSS2 4.7k CONTROL 1 3471 TA02 CSS1 0.33µF CSS2 0.33µF C1 10µF VIN 2.6V TO 4.2V Li-Ion SHDN/SS1 FB1N 9 0V 1.8V CONTROL 2 0V 1.8V 8 7 SW1 SW2 LT3471 L2 15µH L3 15µH GND FB1P VIN FB2P FB2N VREF C2 0.1µF C3 4.7µF C6 33pF VOUT1 7V 500mA WHEN VIN = 4.2V 350mA WHEN VIN = 3.3V 250mA WHEN VIN = 2.6V VOUT2 –7V TO –4V –7V WHEN VCONTROL = 0V –4V WHEN VCONTROL = 1 –7V, 300mA WHEN VIN = 4.2V –7V, 250mA WHEN VIN = 3.3V –7V, 200mA WHEN VIN = 2.6V C1, C2: X5R OR X7R 6.3V C3, C4: X5R OR X7R 10V C5: XR5 OR X7R 16V C6: OPTIONAL D1, D2: ON SEMICONDUCTOR MBRM-120 L1: SUMIDA CR43-2R2 L2: SUMIDA CDRH4D18-100 L3: SUMIDA CDRH4D18-150 C6 75pF R2 15k R5 20k R6 10k R3 90.9k R4 15k R1 105k C5 1µF SHDN/SS2 VIN 10 1 2 3 5 4 11 6 VIN C4 10µF D2 L1 2.2µH D1 VCONTROL 0V TO 1V Li-Ion OLED Driver IOUT (mA) 0 50 55 65 70 75 200 400 500 95 3471 TA02b 60 100 300 80 85 90 VOUT = 7V VIN = 4.2V VIN = 4.2V VIN = 3.3V VIN = 3.3V VIN = 2.6V VIN = 2.6V VOUT = –7V Li-Ion OLED Driver Efficiency |
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