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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LT1307 датащи(PDF) 3 Page - Linear Technology |
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LT1307 датащи(HTML) 3 Page - Linear Technology |
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3 / 20 page  3 LT1307/LT1307B SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Maximum Duty Cycle 25 °C, 0°C80 84 % 70 °C76 % Switch Current Limit (Note 3) DC = 40% q 0.6 1.25 A DC = 75% 0.5 A Switch VCESAT ISW = 500mA (25°C, 0°C) 295 350 mV ISW = 500mA (70°C) 400 mV Burst Mode Operation Switch Current Limit L = 10 µH 100 mA (LT1307 Only) L = 22 µH50 mA Shutdown Pin Current VSHDN = VIN q 2.5 4.0 µA VSHDN = 0V q – 1.5 – 2.5 µA LBI Threshold Voltage q 190 200 210 mV LBO Output Low ISINK = 10µA q 0.1 0.25 V LBO Leakage Current VLBI = 250mV, VLBO = 5V q 0.01 0.1 µA LBI Input Bias Current (Note 4) VLBI = 150mV q 525 nA Low-Battery Detector Gain 1M Ω Load (25°C, 0°C) 1000 3000 V/V 1M Ω Load (70°C) 500 V/V Switch Leakage Current VSW = 5V q 0.01 3 µA Reverse Battery Current (Note 5) 750 mA Commercial Grade 0 °C to 70°C. VIN = 1.1V, VSHDN = VIN, TA = 25°C unless otherwise noted. ELECTRICAL C C HARA TERISTICS Commercial Grade TA = –20°C, VIN = 1.1V, VSHDN = VIN, unless otherwise noted (Note 1). SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IQ Quiescent Current VFB = 1.3V, Not Switching (LT1307) 50 100 µA VFB = 1.3V, Not Switching (LT1307B) 1.1 1.6 mA VSHDN = 0V 1 3 µA VFB Feedback Voltage 1.195 1.22 1.245 V gm Error Amp Transconductance ∆I = 5µA25 35 65 µmhos AV Error Amp Voltage Gain 35 100 V/V fOSC Switching Frequency 500 600 750 kHz Maximum Duty Cycle 80 84 % Switch VCESAT ISW = 500mA, VIN = 1.2V 250 350 mV Shutdown Pin Current VSHDN = VIN 2.5 4.0 µA VSHDN = 0V – 1.5 – 2.5 µA LBI Threshold Voltage 186 200 210 mV |
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