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RT9284B15PJ6 Datasheet(PDF) 6 Page - Richtek Technology Corporation |
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RT9284B15PJ6 Datasheet(HTML) 6 Page - Richtek Technology Corporation |
6 / 14 page 6 RT9284A/B www.richtek.com DS9284A/B-05 August 2007 Typical Operating Characteristics LED Current vs. Input Voltage 18 18.5 19 19.5 20 20.5 21 21.5 22 3 3.25 3.5 3.75 4 4.25 4.5 4.75 5 5.25 5.5 Input Voltage (V) 4WLEDs, L = 10 μH Maximum Duty Cycle vs. VDD 85% 86% 87% 88% 89% 90% 91% 3 3.25 3.5 3.75 4 4.25 4.5 4.75 5 5.25 5.5 VDD (V) 91 90 89 88 87 86 85 POR (Rising/Falling) vs. Temperature 1.5 1.7 1.9 2.1 2.3 2.5 2.7 -40 -30 -20 -10 0 1020 304050 6070 8090 Temperature ( °C) Rising Falling Shut Down Voltage vs. Input Voltage 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 3 3.25 3.5 3.75 4 4.25 4.5 4.75 5 5.25 5.5 Input Voltage (V) -45 °C 25 °C 85 °C Enable Voltage vs. Input Voltage 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 3 3.25 3.5 3.75 4 4.25 4.5 4.75 5 5.25 5.5 Input Voltage (V) -45 °C 25 °C 85 °C Efficiency vs. Input Voltage 80.5 81 81.5 82 82.5 83 83.5 84 3 3.2 3.4 3.6 3.8 4 4.2 4.4 Input Voltage (V) 3WLEDs 4WLEDs ILED = 20mA, L = 4.7 μH, DCR = 0.15Ω |
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