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MAX16929AGUI Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX16929AGUI Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 25 page ����������������������������������������������������������������� Maxim Integrated Products 3 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 Soft-Start Ramp Time 3.9 ms Maximum Duty Cycle Continuous mode 80 % Minimum Duty Cycle Continuous mode 20 % Maximum Duty Cycle in Dropout Dropout 95 % Thermal Shutdown Temperature +175 N C Thermal Shutdown Hysteresis 15 N C POWER GOOD (PGOOD) PGOOD Threshold Rising 94 % Falling 90 92 95 PGOOD Debounce Time 13 F s Output High-Leakage Current 0.2 F A Output Low Level 0.4 V LOGIC LEVELS ENB Threshold ENB rising 1.4 1.8 2.2 V ENB Hysteresis 0.2 V ENB Input Current 3 5 9 F A BOOST, POSITIVE (GH), NEGATIVE (GL), 1.8V/3.3V CONVERTERS INA Input Supply Range VINA 3 5.5 V INA Supply Current IINA VFBP = VFBGH = 1.3V, VFBGL = 0V, LXP not switching 1.5 2.0 mA INA Undervoltage Lockout Threshold VINA,UVLO VINA rising, hysteresis = 200mV, TA = +25NC 2.5 2.7 2.9 V INA Shutdown Current ISHDN VENP = 0V, TA = +25NC 0.5 F A Thermal Shutdown Temperature TSHDN Temperature rising +165 N C Thermal Shutdown Hysteresis TH 15 N C Duration to Trigger Fault Condition VFBP, VFBGH, or VFBGL below its thresh- old 238 ms Autoretry Time 1.9 s REFERENCE (REF) REF Output Voltage VREF No output current 1.236 1.25 1.264 V REF Load Regulation 0 < IREF < 80FA, REF sourcing -2 +2 % REF Undervoltage Lockout Threshold Rising edge, hysteresis = 200mV 1.165 V OSCILLATOR Internal Oscillator Frequency fOSC TA = +25NC 3.96 4.40 4.84 MHz Spread-Spectrum Modulation Frequency fSS fOSC/2 MHz |
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