AL8843QTypical Performance Characteristics (continued) (@TA = +25°C, VIN = 16V, unless otherwise specified.) LED Current vs. Output VoltageLED Current vs. Output Voltage(RSET =0.067Ω, L=47μH)(RSET=0.05Ω, L=47μH) 1.56 2.11 V =10V IN V =12V IN 2.10 V =10V IN V =12V IN 1.55 V =16V IN V =20V IN 2.09 V =16V IN V =20V IN V =24V 1.54 IN V =28V IN 2.08 V =24V IN V =28V IN V =32V IN V =36V IN 2.07 V =32V IN 1.53 (A) V =40V IN (A) V =36V IN 2.06 V =40V IN rent rent 1.52 2.05 ur ur 2.04 D C D C 1.51 LE LE 2.03 1.50 2.02 2.01 1.49 2.00 1.48 1.99 3 6 9 12 15 18 21 24 27 30 33 3 6 9 12 15 18 21 24 27 30 33 Output Voltage (V) Output Voltage (V) Performance Characteristics (@VIN = 16V, 3 LEDs, RSET = 0.3Ω, L = 47μH, TA = +25°C, unless otherwise specified.) Steady State Start Up VIN
I 10V/div L
100mA/div VSW 10V/div
VCTRL 2V/div
VSW I 5V/div L
200mA/div
Time 1μs/div Time 20μs/div PWM Dimming (100Hz, Duty=50%)LED Open Protection VCTRL VSW 2V/div