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MAX8795AGTJ Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX8795AGTJ Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 31 page TFT-LCD DC-DC Converter with Operational Amplifiers _______________________________________________________________________________________ 9 ELECTRICAL CHARACTERISTICS (VIN = 3V, VMAIN = VSUP = 14V, VPGND = VAGND = VBGND = 0V, IREF = 25µA, TA = -40°C to +105°C, unless otherwise noted.) (Note3) PARAMETER SYMBOL CONDITIONS MIN MAX UNITS IN Supply Range VIN (Note 2) 2.5 6.0 V IN Undervoltage-Lockout Threshold VUVLO VIN rising, typical hysteresis = 150mV 2.05 2.45 V VFB = VFBP = 1.3V, VFBN = 0V, LX not switching 1.0 IN Quiescent Current IIN VFB = 1.2V, VFBP = 1.4V, VFBN = 0V, LX switching 3 mA REF Output Voltage No external load 1.218 1.277 V REF Undervoltage-Lockout Threshold Rising edge, typical hysteresis = 160mV 1.15 V MAIN STEP-UP REGULATOR Output Voltage Range VMAIN VIN 18 V Operating Frequency fOSC 900 1400 kHz FB Regulation Voltage VFB No load 1.198 1.260 V FB Line Regulation VIN = 2.5V to 6V ±0.4 %/ V FB Transconductance ∆ICOMP = ±2.5µA 75 280 µS LX On-Resistance RLX(ON) ILX = 200mA 300 m Ω LX Current Limit ILIM VFB = 1.2V, duty cycle = 75% 2.5 3.5 A OPERATIONAL AMPLIFIERS SUP Supply Range VSUP 618 V SUP Overvoltage Fault Threshold 18.0 19.9 V SUP Supply Current ISUP Buffer configuration, VPOS_ = VSUP / 2, no load 5mA Input Offset Voltage VOS (VNEG_, VPOS_, VOUT_) ≅ VSUP / 2 12 mV Input Common-Mode Voltage Range VCM 0VSUP V Output Voltage Swing, High VOH IOUT_ = 5mA VSUP - 100 mV Output Voltage Swing, Low VOL IOUT_ = -5mA 100 mV Source 75 Short-Circuit Current To VSUP / 2 Sink 75 mA |
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