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TPS61043DRB Datasheet(PDF) 8 Page - Texas Instruments |
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TPS61043DRB Datasheet(HTML) 8 Page - Texas Instruments |
8 / 27 page www.ti.com 0.0 0.5 1.0 1.5 2.0 2.5 3.0 1.8 2.4 3.0 3.6 4.2 4.8 5.4 6.0 VI - Input Voltage - V TA = 25°C 0 5 10 15 20 0 20 40 60 80 100 Duty Cycle - % fPWM = 100 Hz fPWM = 50 kHz fPWM = 25 kHz 50ms/Div Vout 10V/Div CTRL 1V/Div Input Current 100mA/Div 2.5ms/Div Vsw 5V/Div LED Current 20mA/Div Vout 500mV/Div 2.5ms/Div Vsw 5V/Div LED Current 20mA/Div Vout 50mV/Div 25ms/Div Vsw 5V/Div LED Current 20mA/Div Vout 500mV/Div TPS61043 SLVS465A – DECEMBER 2003 – REVISED DECEMBER 2003 rds(on) LED Switch (Q2) Average LED Current vs vs Input Voltage PWM Duty Cycle on CTRL Pin Figure 10. Figure 11. Softstart PFM Operation Figure 12. Figure 13. Bust Mode Operation PWM Dimming Figure 14. Figure 15. 8 |
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