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MAX618 Fiches technique(PDF) 2 Page - Maxim Integrated Products |
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MAX618 Fiches technique(HTML) 2 Page - Maxim Integrated Products |
2 / 14 page 28V, PWM, Step-Up DC-DC Converter 2 _______________________________________________________________________________________ ABSOLUTE MAXIMUM RATINGS ELECTRICAL CHARACTERISTICS (VIN = +6V, PGND = GND, CVL = 4.7µF, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) 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 to GND ...............................................................-0.3V to +30V LX to GND ..............................................................-0.3V to +30V VL to GND ................................................................-0.3V to +6V SHDN, COMP, FB to GND ............................-0.3V to (VL + 0.3V) PGND to GND.....................................................................±0.3V Continuous Power Dissipation (TA = +70°C) (Note 1) 16-Pin QSOP (derate 15mW/°C above +70°C)...................1W Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10sec) .............................+300°C Note 1: With part mounted on 0.9 in.2 of copper. Shutdown Supply Current IIN 38 µA VIN = 28V, VFB = 1.6V, SHDN = GND Maximum Duty Cycle DC 90 95 % PARAMETER SYMBOL MIN TYP MAX UNITS VL Output Voltage VVL 2.9 3.05 3.2 V Supply Current, Full Load IIN 2.5 3.5 mA Supply Current, Full Load, VL Connected to IN IIN 5 6.5 mA VL Load Regulation ∆VVL 25 40 mV VL Undervoltage Lockout 2.58 2.7 2.8 V FB Set Voltage VFB 1.47 1.5 1.53 V FB Input Bias Current IFB 150 nA Supply Current, No Load Input Voltage VIN 328 V IIN 500 700 µA Line Regulation ∆VOUT 0.01 0.08 %/V Load Regulation ∆VOUT 0.2 % LX Voltage VLX 28 V LX Switch Current Limit ILXON 1.7 2.2 2.7 A Idle Mode Current-Limit Threshold 0.25 0.35 0.45 A LX On-Resistance RLXON 0.3 0.6 Ω LX Leakage Current ILXOFF 0.02 10 µA COMP Maximum Output Current ICOMP 100 200 µA COMP Current vs. FB Voltage Transconductance 0.8 1 mmho SHDN Input Logic Low VIL 0.8 V SHDN Input Logic High VIH 2.0 V Shutdown Input Current 1 µA Switching Frequency f 200 250 300 kHz CONDITIONS VIN = 3V to 6V, VOUT = 12V VIN = 3.5V or 28V, no load VOUT = 12V, ILOAD = 10mA to 500mA VIN = 3.4V to 28V, VFB = 1.4V, SHDN = VL, VVL < VIN VIN = 3V to 5.5V, VFB = 1.4V, SHDN = VL = IN ILOAD = 0 to 2mA, VFB = 1.6V Rising edge, 1% hysteresis PWM mode VFB = 1.6V VLX = 28V FB = GND VIN = 3V to 28V, VFB = 1.6V, SHDN = VL ∆FB = 0.1V SHDN = GND or VL |
Numéro de pièce similaire - MAX618 |
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Description similaire - MAX618 |
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