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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LM2647 датащи(PDF) 5 Page - National Semiconductor (TI) |
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LM2647 датащи(HTML) 5 Page - National Semiconductor (TI) |
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5 / 25 page  Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Voltages from the indicated pins to SGND/PGND unless otherwise indicated (Note 2): VIN 30V V5 7V VDD 7V BOOT1, BOOT2 36V BOOT1 to SW1, BOOT2 to SW2 7V SW1, SW2 30V ILIM1, ILIM2 30V SENSE1, SENSE2, FB1, FB2 7V PGOOD 7V EN 7V Power Dissipation (T A = 25˚C) (Note 3) 1.0W Junction Temperature +150˚C ESD Rating (Note 4) 2kV Ambient Storage Temperature Range -65˚C to +150˚C Soldering Dwell Time, Temperature Wave Infrared Vapor Phase 4 sec, 260˚C 10 sec, 240˚C 75 sec, 219˚C Operating Ratings (Note 1) VIN 5.5V to 28V VDD, V5 4.5V to 5.5V Junction Temperature -5˚C to +125˚C Electrical Characteristics Specifications with standard typeface are for T J = 25˚C, and those with boldface apply over full Operating Junction Tempera- ture range. VDD = V5 = 5V, V SGND =VPGND = 0V, VIN = 15V, VEN = 3V, RFADJ = 22.1K unless otherwise stated. (Note 5) Symbol Parameter Conditions Min (Note 6) Typical (Note 7) Max (Note 6) Units Reference V FB_REG FB Pin Voltage at Regualtion (either FB Pin) VDD = 4.5V to 5.5V, VIN = 5.5V to 28V 591 600 609 mV V FB Line Regulation VDD = 4.5V to 5.5V, VIN = 5.5V to 28V 0.5 I FB FB Pin Current (sourcing) V FB at regulation 20 100 nA Chip Supply I Q_VIN VIN Quiescent Current V FB1 =VFB2 = 0.7V 100 200 µA I SD_VN VIN Shutdown Current V EN =0V 0 5 µA I Q_VDD VDD Quiescent Current V FB1 =VFB2 = 0.7V 2.5 4 mA I SD_VDD VDD Shutdown Current V EN =0V 8 15 µA I Q_V5 V5 Normal Operating Current V FB1 =VFB2 = 0.7V 0.3 0.5 mA V FB1 =VFB2 = 0.5V 1 1.5 I SD_V5 V5 Shutdown Current V EN =0V 0 5 µA I Q_BOOT BOOT Quiescent Current V FB1 =VFB2 = 0.7V 2 5 µA V FB1 =VFB2 = 0.5V 300 500 I SD_BOOT BOOT Shutdown Current V EN =0V 1 5 µA V UVLO VDD UVLO Threshold VDD rising from 0V 3.9 4.2 4.5 V VDD UVLO Hysteresis VDD = V5 falling from V UVLO 0.5 0.7 0.9 V Logic I EN EN Input Current V EN =0to5V 0 µA V EN_HI EN Input Logic High 2 1.8 V V EN_LO EN Input Logic Low 1.3 0.8 V FPWM Pull-down V FPWM =2V 100 200 1000 k Ω V FPWM_HI FPWM Input Logic High 2 1.8 V VFPWM_LO FPWM Input Logic Low 1.3 0.8 V www.national.com 5 |
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