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MAX879MJA Datasheet(PDF) 2 Page - Maxim Integrated Products |
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MAX879MJA Datasheet(HTML) 2 Page - Maxim Integrated Products |
2 / 12 page 5V/3.3V/3V/Adjustable-Output, Step-Up/Step-Down DC-DC Converters 2 _______________________________________________________________________________________ ABSOLUTE MAXIMUM RATINGS Supply Voltage (IN to PGND) .......................................0V to +7V Output Short-Circuit Duration to PGND, AGND (Note 1)....30sec Voltage Applied to: LX (switch off).......................................................-0.3V to +7V (switch on) ...................................30sec short to IN or OUT OUT, – S — H — D — N...........................................................-0.3V to +7V FB ..........................................................-0.3V to (OUT + 0.3V) AGND to PGND ........................................................-0.3V, +0.3V Reverse Battery Current....................................................900mA Continuous Power Dissipation (TA = +70°C) Plastic DIP (derate 9.09mW/°C above +70°C) ............727mW SO (derate 5.88mW/°C above +70°C) .........................471mW CERDIP (derate 8.00mW/°C above +70°C) .................640mW Operating Temperature Ranges: MAX87_C_A ........................................................0°C to +70°C MAX87_E_A .....................................................-40°C to +85°C MAX87_MJA ..................................................-55°C to +125°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10sec) .............................+300°C ELECTRICAL CHARACTERISTICS (VIN = 2.7V, ILOAD = 0mA, LX = 22µH, COUT = 100µF, – S — H — D — N and ILIM connected to IN, AGND connected to PGND, TA = TMIN to TMAX, typical values are at TA = +25°C, unless otherwise noted.) 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. PARAMETER SEL = 0V CONDITIONS MIN TYP MAX Output Voltage (MAX879 set to 3.3V) (Note 3) V UNITS MAX878/MAX879 (VOUT = 3.3V), ILOAD = 100mA, VIN = 2.5V MAX877/MAX879 (VOUT = 5V), ILOAD = 100mA, VIN = 4V MAX879, ILOAD = 0mA (Note 4) SEL = Open 0V < – S — H — D — N – < VIN VIN < – S — H — D — N – < 5V – S — H — D — N – = 0V 20 35 µA Efficiency MAX87_C, MAX87_E Output Voltage Range – S — H — D — N – Bias Current MAX87_M Maximum Operating Voltage (Notes 2, 3) 6.2 V Shutdown Supply Current 15 100 nA Output Voltage (MAX879 set to 5V) (Note 3) MAX877C/MAX879C: 0mA ≤ ILOAD ≤ 240mA, 2.7V ≤ VIN ≤ 6.2V; MAX877E/MAX879E: 0mA ≤ ILOAD ≤ 220mA, 2.7V ≤ VIN ≤ 6.2V; MAX877M/MAX879M: 0mA ≤ ILOAD ≤ 180mA, 2.7V ≤ VIN ≤ 6.2V 4.80 5.00 5.20 V MAX878C/MAX879C: 0mA ≤ ILOAD ≤ 210mA, 1.8V ≤ VIN ≤ 6.2V; MAX878E/MAX879E: 0mA ≤ ILOAD ≤ 200mA, 1.8V ≤ VIN ≤ 6.2V; MAX878M/MAX879M: 0mA ≤ ILOAD ≤ 180mA, 1.8V ≤ VIN ≤ 6.2V 3.17 3.30 3.43 12 40 µA ILOAD = 0mA, TA = +25°C 1 2.88 3.00 3.12 MAX877/MAX879 (VOUT = 5V), 0mA < ILOAD < 180mA, TA = +25°C 2.5 2.5 6.0 V Minimum Start-Up Voltage (Notes 2, 6) 85 MAX878/MAX879 (VOUT = 3.3V), 0mA < ILOAD < 120mA, TA = +25°C 1.5 V MAX878C: 0mA ≤ ILOAD ≤ 210mA, 1.8V ≤ VIN ≤ 6.2V; MAX878E: 0mA ≤ ILOAD ≤ 200mA, 1.8V ≤ VIN ≤ 6.2V; MAX878M: 0mA ≤ ILOAD ≤ 180mA, 1.8V ≤ VIN ≤ 6.2V 82 % No-Load Supply Current ILOAD = 0mA (switch off) 195 310 µA 20 30 Note 1: The output may be shorted to ground continuously if the package power dissipation is not exceeded. |
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