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MAX1534ETE Datasheet(PDF) 2 Page - Maxim Integrated Products |
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MAX1534ETE Datasheet(HTML) 2 Page - Maxim Integrated Products |
2 / 16 page High-Efficiency, Triple-Output, Keep-Alive Power Supply for Notebook Computers 2 _______________________________________________________________________________________ ABSOLUTE MAXIMUM RATINGS Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. IN, ILIM, PRESET, SHDN to GND...........................-0.3V to +25V FB1, FB2, FB3, LDOIN, BP to GND..........................-0.3V to +6V OUT1, OUT2, POK to GND ...................-0.3V to (VLDOIN + 0.3V) LX to GND.......................................................-2V to (VIN + 0.3V) OUT1, OUT2 Short Circuit to GND.............................Continuous Peak IN Current........................................................................2A Maximum IN DC Current...................................................500mA Continuous Power Dissipation (TA = +70°C) 16-Pin Thin QFN (derate 16.9mW/°C above +70°C)............................................................1349mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C ELECTRICAL CHARACTERISTICS (Circuit of Figure 1, VIN = 12V, ILIM = GND, PRESET = GND, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Voltage Range VIN 4.5 24 V Input Supply Current IIN No load, FB3 = 5.2V, LDOIN = GND 15 30 µA Input Supply Current in Dropout IIN(DROP) No load, FB3 = VIN = 4.5V, LDOIN = GND 60 110 µA Shutdown Supply Current SHDN = GND 3.5 7 µA VIN rising 3.6 4.0 4.4 Input UVLO Threshold VUVLO VIN falling 3.5 3.9 4.3 V BUCK REGULATOR TA = +25°C to +85°C 4.92 5.00 5.08 FB3 Voltage Accuracy (Preset Mode) (Note 1) PRESET = GND TA = 0°C to +85°C 4.90 5.00 5.10 V TA = +25°C to +85°C 0.985 1.00 1.015 FB3 Set Voltage (Adjustable Mode) (Note 1) VFB3 PRESET = IN TA = 0°C to +85°C 0.98 1.00 1.02 V FB3 Bias Current IFB3 VFB3 = 5.5V 3.5 6.25 µA LX Switch Minimum Off-Time tOFF(MIN) 0.22 0.42 0.62 µs LX Switch Minimum On-Time tON(MIN) 0.50 µs LX Switch Maximum On-Time tON(MAX) 910 11 µs VIN = 6V 0.5 1.0 LX Switch On-Resistance RLX VIN = 4.5V 0.6 1.2 Ω ILIM = IN 800 1000 1200 LX Current Limit ILX(PEAK) ILIM = GND 425 500 575 mA LX Zero-Crossing Threshold -75 +75 mV LX Zero-Crossing Timeout LX does not rise above threshold 30 µs TA = +25°C1 LX Switch Leakage Current VIN = 24V, not switching TA = 0°C to +85°C10 µA Dropout Voltage VOUT3(DROPOUT) ILX(DC) = 500mA 250 mV Line Regulation VIN = 8V to 24V, ILX(DC) = 200mA 0.1 %/V Load Regulation ILX(DC) = 80mA to 400mA 0.9 % LINEAR REGULATORS LDOIN Input Voltage VLDOIN 2.5 5.5 V LDOIN Undervoltage Lockout VUVLO(LDO) VLDOIN rising, hysteresis = 40mV typ 2.15 2.4 V |
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