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MAX16814AUP+ Datasheet(PDF) 7 Page - Maxim Integrated Products |
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MAX16814AUP+ Datasheet(HTML) 7 Page - Maxim Integrated Products |
7 / 25 page 7 Maxim Integrated Integrated, 4-Channel, High-Brightness LED Driver with High-Voltage DC-DC Controller MAX16814 Typical Operating Characteristics (continued) (VIN = VEN = 12V, fSW = 300kHz, RSETI = 15kI, CVCC = 1FF, VCC = VDRV, NDRV = COMP = OUT_ = unconnected, VOVP = VCS = VLEDGND = VDIM = VPGND = VSGND = 0V, load = 4 strings of 7 white LEDs, TA = +25NC, unless otherwise noted.) LED CURRENT SWITCHING WITH DIM AT 5kHz AND 50% DUTY CYCLE MAX16814 toc16 IOUT3 100mA/div IOUT4 100mA/div 0A 0A 0A 0A IOUT1 100mA/div IOUT2 100mA/div 100Fs/div FIGURE 2 LED CURRENT RISING AND FALLING WAVEFORM MAX16814 toc17 VDIM 5V/div 0A 0V ILED 50mA/div 4Fs/div FIGURE 2 OUT_ LEAKAGE CURRENT vs. TEMPERATURE TEMPERATURE (NC) 1 10 100 0.1 100 75 50 25 0 -25 -50 125 VDIM = 0V VOUT = 40V OUT_ CURRENT vs. 1/RSETI 1/RSETI (mS) 0.085 0.070 0.055 0.040 0.025 40 60 80 100 120 140 160 20 0.010 0.100 OVP LEAKAGE CURRENT vs. TEMPERATURE TEMPERATURE (NC) 100 75 25 50 0 -25 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 -50 125 VOVP = 1.25V COMP LEAKAGE CURRENT vs. TEMPERATURE TEMPERATURE (NC) 100 75 50 25 0 -25 0.2 0.4 0.6 0.8 1.0 0 -50 125 VDIM = 0V VCOMP = 4.5V VCOMP = 0.5V RSDT LEAKAGE CURRENT vs. TEMPERATURE TEMPERATURE (NC) 100 75 50 25 0 -25 100 150 200 250 50 -50 125 VRSDT = 0.5V VRSDT = 2.5V |
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