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RT9284B-20PJ6 Datasheet(PDF) 7 Page - Richtek Technology Corporation |
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RT9284B-20PJ6 Datasheet(HTML) 7 Page - Richtek Technology Corporation |
7 / 14 page 7 RT9284A/B DS9284A/B-05 August 2007 www.richtek.com Dimming Operation Time (400 μs/Div) IIN ILED EN (5V/Div) (10mA/Div) f = 1kHz, Duty = 50% 4WLEDs, VIN = 3.7V, ILED = 20mA, L = 10 μH (100mA/Div) Switching Frequency vs. Temperature 1 1.05 1.1 1.15 1.2 1.25 1.3 1.35 1.4 1.45 1.5 -40 -30 -20 -10 0 1020 304050 6070 8090 Temperature ( °C) Switching Current vs. Input Voltage 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 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 Dimming Operation Time (2ms/Div) IIN ILED EN (5V/Div) (10mA/Div) f = 100Hz, Duty = 50% 4WLEDs, VIN = 3.7V, ILED = 20mA, L = 10 μH (50mA/Div) Dimming Operation Time (40 μs/Div) IIN ILED EN (5V/Div) (10mA/Div) f = 10kHz, Duty = 50% 4WLEDs, VIN = 3.7V, ILED = 20mA, L = 10 μH (100mA/Div) Feedback Voltage vs. Temperature 250.6 250.8 251 251.2 251.4 251.6 251.8 252 252.2 -40 -30 -20 -10 0 10203040 506070 8090 Temperature ( °C) |
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