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MAX1533AETJ+ Datasheet(PDF) 7 Page - Maxim Integrated Products |
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MAX1533AETJ+ Datasheet(HTML) 7 Page - Maxim Integrated Products |
7 / 38 page High-Efficiency, 5x Output, Main Power-Supply Controllers for Notebook Computers _______________________________________________________________________________________ 7 ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 1, VIN = 12V, both SMPS enabled, VCC = 5V, FSEL = REF, SKIP = GND, VILIM_ = VLDO5, VINA = 15V, VLDOA = 12V, ILDO5 = ILDO3 = ILDOA = no load, TA = -40°C to +85°C, unless otherwise noted.) (Note 4) PARAMETER SYMBOL CONDITIONS MIN MAX UNITS FSEL = GND 170 230 FSEL = REF 240 330 Operating Frequency (Note 1) fOSC FSEL = VCC 375 575 kHz FSEL = GND 91 FSEL = REF 91 Maximum Duty Factor (Note 1) DMAX FSEL = VCC 91 % Minimum On-Time tON(MIN) 250 ns CURRENT LIMIT ILIM_ Adjustment Range 0.5 VREF V Current-Limit Threshold (Fixed) VLIMIT_ VCSH_ - VCSL_, ILIM_ = VCC 67 83 mV VILIM_ = 2.00V 170 230 VILIM_ = 1.00V 90 110 Current-Limit Threshold (Adjustable) VLIMIT_ VCSH_ - VCSL_ VILIM_ = 0.50V 40 60 mV INTERNAL FIXED LINEAR REGULATORS LDO5 Output Voltage VLDO5 ON3 = ON5 = GND, 6V < VIN < 26V, 0 < ILDO5 < 100mA 4.8 5.1 V LDO5 Undervoltage-Lockout Fault Threshold Rising edge, hysteresis = 1% 3.75 4.30 V LDO3 Output Voltage VLDO3 Standby mode, 6V < VIN < 28V, 0 < ILOAD < 100mA 3.20 3.43 V AUXILIARY LINEAR REGULATOR (MAX1537A ONLY) LDOA Voltage Range VLODA 523 V INA Voltage Range VINA 624 V LDOA Regulation Threshold, Internal Feedback ADJA = GND, 0 < ILDOA < 120mA, VINA > 13V 11.40 12.55 V ADJA Regulation Threshold, External Feedback VADJA 0 < ILDOA < 120mA, VLDOA > 5.0V and VINA > VLDOA + 1V 1.94 2.08 V ADJA Dual-Mode Threshold ADJA 0.10 0.25 V Secondary Feedback Regulation Threshold VINA - VLDOA 0.63 0.97 V INA Quiescent Current IINA VINA = 24V, ILDOA = no load 165 µA REFERENCE (REF) Reference Voltage VREF VCC = 4.5V to 5.5V, IREF = 0 1.97 2.03 V |
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