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MAX1994ETM Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX1994ETM Datasheet(HTML) 9 Page - Maxim Integrated Products |
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9 / 49 page  Dual Step-Down Controllers Plus Linear- Regulator Controller for Notebook Computers _______________________________________________________________________________________ 9 ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 1, V+ = 15V, VOUT1 = 1.20V, VOUT2 = 2.50V, VCC = VDD = 5.0V, VSKP1/SDN = VSKP2/SDN = VLIN/SDN = 5.0V, TA = -40°C to +100°C, unless otherwise noted.) (Note 6) PARAMETER CONDITIONS MIN TYP MAX UNITS Partial Shutdown Supply Current (Linear Regulator On Only) VSKP1/SDN = 0V, VSKP2/SDN = 0V, VLIN/SDN = 5V; measured at VCC, with FBS and LINFB forced above the no-load regulation point 750 µA Partial Shutdown Supply Current (BUCK1 and Linear Regulator) VSKP1/SDN = 5V, VSKP2/SDN = 0V, VLIN/SDN = 5V; measured at VCC, with FBS and LINFB forced above the no-load regulation point 3400 µA Partial Shutdown Supply Current (BUCK2 Only) VSKP1/SDN = 0V, VSKP2/SDN = 5V, VLIN/SDN = 0V; measured at VCC, with OUT2 and FB2 forced above the regulation point 1400 µA Quiescent Supply Current (VDD) Measured at VDD, with FBS, OUT2, and FB2 forced above the no-load regulation point, TA = -40°C to +85°C 5 µA Quiescent Battery Current Measured at V+ 40 µA Shutdown Supply Current (VCC) VSKP1/SDN = 0V, VSKP2/SDN = 0V, and VLIN/SDN = 0V, TA = -40°C to +85°C 10 µA Shutdown Supply Current (VDD) VSKP1/SDN = 0V, VSKP2/SDN = 0V, and VLIN/SDN = 0V, TA = -40°C to +85°C 5 µA Shutdown Battery Current VSKP1/SDN = VSKP2/SDN = 0V, measured at V+, with VCC = VDD = 0V or 5V, TA = -40°C to +85°C 5 µA Reference Voltage VCC = 4.5V to 5.5V, IREF = 50µA sourcing 1.98 2.02 V IREF = 0 to 50µA 0 7 Reference Load Regulation IREF = 50µA to 100µA 0 7 mV Reference Sink Current REF in regulation 10 µA OVPSET Disable Mode Threshold Voltage at OVPSET above which the OVP functions are disabled for BUCK1 and BUCK2 VCC - 1.5 VCC - 0.5 V OVPSET Default Mode Threshold for BUCK1 Voltage at OVPSET below which the OVP thresholds are set to their default values 0.4 0.6 V MAX1816 1.95 2.05 Overvoltage Trip Threshold for BUCK1 (Fixed OVP Threshold) OVPSET = GND, measured at FBS MAX1994 2.20 2.30 V MAX1816 0.95 1.05 VOVPSET = 1.0V, measured at FBS MAX1994 1.075 1.175 MAX1816 1.95 2.05 Overvoltage Trip Threshold for BUCK1 (Adjustable Threshold) VOVPSET = 2.0V, measured at FBS MAX1994 2.20 2.30 V Overvoltage Trip Threshold for BUCK2 Measured at OUT2 (or FB2 if external feedback is used) 113 117 % Output Undervoltage Protection Threshold With respect to unloaded output voltage FBS and OUT2 (FB2 in external feedback) 65 75 % |
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