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MAX16929HGUIV Datasheet(PDF) 4 Page - Maxim Integrated Products |
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MAX16929HGUIV Datasheet(HTML) 4 Page - Maxim Integrated Products |
4 / 25 page ����������������������������������������������������������������� Maxim Integrated Products 4 MAX16929 Automotive TFT-LCD Power Supply with Boost Converter and Gate Voltage Regulators ELECTRICAL CHARACTERISTICS (continued) (VINB = 12V, VINA = 5V, VGND = VPGNDP = 0V, TA = TJ = -40NC to +105NC, typical values are at TA = +25NC, unless otherwise noted.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Spread-Spectrum Factor SSR As a percentage of switching frequency, fSW Q 4 % BOOST CONVERTER Switching Frequency fSW 1.98 2.20 2.42 MHz Maximum Duty Cycle 82 93.5 % LXP Current Limit ILIM Duty cycle = 70%, CCOMPI = 220pF Low boost current- limit option 0.625 0.78 A High boost current- limit option 1.25 1.56 1.87 LXP On-Resistance RDS_ON(LXP) ILXP = 200mA 110 250 mI LXP Leakage Current ILK_LXP VLXP = 20V, TA =+25NC 8.5 20 F A Soft-Start Time (Note 4) 30 ms Output Voltage Range VSH VINA 18 V FBP Regulation Voltage VFBP VINA = +3V to +5.5V, 0 < ILOAD < full load TA = +25NC 0.985 1.0 1.015 V TA= -40NC to +105NC 0.98 1.0 1.02 PGOOD Threshold VPG_FBP Measured at FBP 0.74 0.85 0.96 V FBP Load Regulation 0 < ILOAD < full load -1 % FBP Line Regulation VINA = +3V to +5.5V 0.1 %/V FBP Input Bias Current VFBP = +1V, TA = +25NC Q 1 F A FBP to COMPV Transconductance D I = Q2.5FA at COMPV, TA = +25NC 400 F S POSITIVE-GATE VOLTAGE REGULATOR (GH) Output Voltage Range VGH With external charge pump, TA = +25NC (maximum VCP = 29.5V) 5 29 V CP Overvoltage Threshold TA = +25NC (Note 6) 29.5 30.5 V FBGH Regulation Voltage VFBGH IGH = 1mA 0.98 1.0 1.034 V PGOOD Threshold VPG_FBGH Measured at FBGH 0.83 0.85 0.87 V FBGH Load Regulation IGH = 0 to 20mA 2 % FBGH Line Regulation VCP = 12V to 20V at VGH = 10V, IGH = 10mA 2 % FBGH Input Bias Current VFBGH = 1V, TA = +25NC Q 1 F A GH Output Current IGH VCP - VGH = 2V 20 mA GH Current Limit ILIM_GH 35 56 mA GH Soft-Start Time 7.45 ms NEGATIVE-GATE VOLTAGE REGULATOR (GL) Output Voltage Range VDRVN -24 -2 V FBGL Regulation Voltage VFBGL IDRVN = 100FA 0.212 0.242 0.271 V |
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