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MAX16814BUTP+ Datasheet(PDF) 5 Page - Maxim Integrated Products |
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MAX16814BUTP+ Datasheet(HTML) 5 Page - Maxim Integrated Products |
5 / 25 page 5 Maxim Integrated Integrated, 4-Channel, High-Brightness LED Driver with High-Voltage DC-DC Controller MAX16814 Typical Operating Characteristics (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.) SUPPLY CURRENT vs. SWITCHING FREQUENCY fSW (kHz) 1600 1400 1200 1000 800 600 400 3.2 3.4 3.6 3.8 4.0 4.2 4.4 3.0 200 1800 2000 CNDRV = 13pF VSETI vs. PROGRAMMED CURRENT LED STRING CURRENT (mA) 124 98 72 46 1.229 1.230 1.231 1.232 1.233 1.234 1.228 20 150 SWITCHING WAVEFORM AT 5kHz (50% DUTY CYCLE) DIMMING MAX16814 toc01 IOUT1 100mA/div VOUT 10V/div 0V 0A 0V VLX 10V/div 40Fs/div FIGURE 2 SWITCHING FREQUENCY vs. TEMPERATURE TEMPERATURE (NC) 100 75 25 50 0 -25 292 294 296 298 300 302 304 306 308 310 290 -50 125 EN THRESHOLD VOLTAGE vs. TEMPERATURE TEMPERATURE (NC) 100 75 50 25 0 -25 1.15 1.20 1.25 1.30 1.10 -50 125 VEN RISING VEN FALLING SUPPLY CURRENT vs. SUPPLY VOLTAGE VIN (V) 40 35 30 25 20 15 10 2.6 2.8 3.0 3.2 3.4 3.6 3.8 2.4 545 CNDRV = 13pF TA = +125NC TA = +25NC TA = -40NC VSETI vs. TEMPERATURE TEMPERATURE (NC) 100 75 50 25 0 -25 1.224 1.228 1.232 1.236 1.240 1.220 -50 125 EN LEAKAGE CURRENT vs. TEMPERATURE TEMPERATURE (NC) 100 75 50 25 0 -25 30 60 90 120 150 0 -50 125 VEN = 2.5V |
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