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MAX17014ETM+ Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX17014ETM+ Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 34 page Low-Cost Multiple-Output Power Supply for LCD TVs _______________________________________________________________________________________ 3 PARAMETER CONDITIONS MIN TYP MAX UNITS REFERENCE REF Output Voltage No external load 1.235 1.250 1.265 V REF Load Regulation 0 < ILOAD < 50μA 10 mV REF Sink Current In regulation 10 μA REF Undervoltage Lockout Threshold Rising edge; 20mV typical hysteresis 1.0 1.2 V STEP-DOWN REGULATOR 0°C < TA < +85°C 3.25 3.30 3.35 OUT Voltage in Fixed Mode FB2 = GND, no load (Note 2) TA = +25°C 3.267 3.333 V 0°C < TA < +85°C 1.23 1.25 1.27 FB2 Voltage in Adjustable Mode VOUT = 2.5V, no load (Note 2) TA = +25°C 1.2375 1.2625 V FB2 Adjustable-Mode Threshold Voltage Dual-mode comparator 0.10 0.15 0.20 V Output Voltage Adjust Range Step-down output 1.5 5.0 V FB2 Fault Trip Level Falling edge 0.96 1.00 1.04 V FB2 Input Leakage Current VFB2 = 1.5V 50 125 200 nA DC Load Regulation 0A < ILOAD < 2A 0.5 % DC Line Regulation No load, 10.8V < VIN2 < 13.2V 0.1 %/V LX2-to-IN2 nMOS Switch On-Resistance 120 240 m LX2-to-CPGND nMOS Switch On-Resistance 6 10 23 BST-to-VL PMOS Switch On-Resistance 7 12 20 Low-Frequency Operation OUT Threshold Step-down only 0.8 V FSEL = VIN 217 Low-Frequency Operation Switching Frequency FSEL = GND 108 kHz LX2 Positive Current Limit 2.50 3 3.50 A Soft-Start Period 3 ms Soft-Start Step Size VREF / 128 V Maximum Duty Factor 70 80 90 % STEP-UP REGULATOR Output Voltage Range VVIN 20 V Oscillator Maximum Duty Cycle 69 75 81 % Minimum tON 70 ns 0°C < TA < +85°C 1.235 1.25 1.265 FB1 Regulation Voltage FB1 = COMP, CCOMP = 1nF TA = +25°C 1.2375 1.2625 V FB1 Fault Trip Level Falling edge 0.96 1.00 1.04 V ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 1, VIN = IN2 = 12V, AVDD = OVIN = SUP = 15V, TA = 0°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted.) |
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