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MAX8795A Datasheet(PDF) 5 Page - Maxim Integrated Products |
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MAX8795A Datasheet(HTML) 5 Page - Maxim Integrated Products |
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5 / 30 page  TFT-LCD DC-DC Converter with Operational Amplifiers _______________________________________________________________________________________ 5 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 260 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_, IOUT_) = ≅ 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 Source 75 Short-Circuit Current To VSUP / 2 Sink 75 mA GATE-ON LINEAR-REGULATOR CONTROLLER FBP Regulation Voltage VFBP IDRVP = 100µA 1.210 1.280 V FBP Effective Load-Regulation Error (Transconductance) VDRVP = 10V, IDRVP = 50µA to 1mA -1.5 % FBP Line (IN) Regulation Error IDRVP = 100µA, 2.5V < VIN < 6V 10 mV DRVP Sink Current IDRVP VFBP = 1.1V, VDRVP = 10V 1 mA ELECTRICAL CHARACTERISTICS (VIN = 3V, VMAIN = VSUP = 14V, VPGND = VAGND = VBGND = 0V, IREF = 25µA, TA = -40°C to +85°C, unless otherwise noted.) (Note 3) |
Similar Part No. - MAX8795A |
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Similar Description - MAX8795A |
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