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MAX16838AUP Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX16838AUP Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 21 page Integrated, 2-Channel, High-Brightness LED Driver with High-Voltage Boost and SEPIC Controller _______________________________________________________________________________________ 3 ELECTRICAL CHARACTERISTICS (continued) (VIN = VEN = 12V, RRT = 12.2kI, RISET = 15kI, CVCC = 1FF, VCC = VDRV = VCFB, DRAIN, COMP, OUT_, FLT = unconnected, VOV = VCS = VLEDGND = VDIM = VPGND = VSGND = 0V, VGATE = VNDRV, TA = TJ = -40NC to +125NC, unless otherwise noted. Typical values are at TA = 25NC.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Oscillator Frequency Accuracy fSW = 200kHz to 2MHz -7.5 +7.5 % Synchronization Logic-High VRT rising 1.8 3.6 V Synchronization Logic-Low VRT falling 2.5 V Logic-Level Before SYNC Capacitor 3.1 3.8 V Synchronization Pulse Width 50 ns SYNC Frequency Range fSYNC 1.1 x fSW 1.5 x fSW Hz PWM COMPARATOR Leading-Edge Blanking 66 ns Propagation Delay to NDRV Including leading-edge blanking time 100 ns SLOPE COMPENSATION Slope Compensation Peak Voltage per Cycle Voltage ramp added to CS 0.12 V CS LIMIT COMPARATOR CS Threshold Voltage VCS_MAX VCOMP = 3V 285 300 315 mV CS Limit Comparator Propagation Delay to NDRV 10mV overdrive (including leading-edge blanking time) 100 ns CS Input Current ICS 0 P VCS P 0.35V -1.3 +0.5 F A ERROR AMPLIFIER OUT_ Regulation Voltage VDIM = 5V 0.9 1 1.1 V Transconductance Gm 340 600 880 F S No-Load Gain A (Note 4) 50 dB COMP Sink Current ISINK VDIM = VOUT_ = 5V, VCOMP = 3V 400 800 F A COMP Source Current ISOURCE VDIM = 5V, VOUT_ = VCOMP = 0V 400 800 F A MOSFET DRIVER NDRV On-Resistance ISINK = 100mA, VIN > 5.5V 1.5 4 I ISOURCE = 100mA, VIN > 5.5V 1.5 4 I Peak Sink Current VNDRV = 5V 0.8 A Peak Source Current VNDRV = 0V 0.8 A POWER MOSFET Power Switch On-Resistance ISWITCH = 0.5A, VGS = 5V 0.15 0.35 I Switch Leakage Current VDRAIN = 40V, VGATE = 0V 0.003 1.2 F A Switch Gate Charge VDRAIN = 40V, VGS = 4.5V 3.1 nC |
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