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LT1308 数据表(PDF) 2 Page - Linear Technology |
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LT1308 数据表(HTML) 2 Page - Linear Technology |
2 / 8 page 2 LT1308 A G A U A R BSOLUTEXI TI S VIN, SHDN, LBO Voltage ......................................... 10V SW Voltage ............................................................. 30V FB Voltage ....................................................... VIN + 1V VC Voltage ................................................................ 2V LBI Voltage ............................................ 0V ≤ VLBI ≤ 1V Current into FB Pin .............................................. ±1mA Junction Temperature ........................................... 125 °C Operating Temperature Range Commercial (Note 1) ......................... – 20 °C to 70°C Industrial ........................................... – 40 °C to 85°C Storage Temperature Range ................ – 65 °C to 150°C Lead Temperature (Soldering, 10 sec)................. 300 °C ORDER PART NUMBER 1 2 3 4 8 7 6 5 TOP VIEW LBO LBI VIN SW VC FB SHDN GND S8 PACKAGE 8-LEAD PLASTIC SO TJMAX = 125°C, θJA = 80°C/W PACKAGE/ORDER I FOR ATIO Consult factory for Military grade parts. LT1308CS8 LT1308IS8 ELECTRICAL C C HARA TERISTICS Commercial Grade 0 °C to 70°C. VIN = 1.1V, VSHDN = VIN, TA = 25°C, unless otherwise noted. 1308 1308I S8 PART MARKING SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IQ Quiescent Current Not Switching q 80 160 µA VSHDN = 0V q 13 µA VFB Feedback Voltage q 1.20 1.22 1.24 V IB FB Pin Bias Current (Note 2) VFB = VREF q 27 80 nA Reference Line Regulation 1.1V ≤ VIN ≤ 2V (25°C, 0°C) 0.6 1.1 %/V 1.1V ≤ VIN ≤ 2V (70°C) 1.5 %/V 2V ≤ VIN ≤ 6V q 0.3 0.8 %/V Minimum Input Voltage 0.92 1 V Input Voltage Range q 16 V gm Error Amp Transconductance ∆I = 5µA40 µmhos AV Error Amp Voltage Gain 25 °C, 0°C 100 V/V 70 °C 80 V/V fOSC Switching Frequency q 500 600 700 kHz Maximum Duty Cycle q 80 88 95 % Switch Current Limit (Note 3) DC = 40% q 2.0 2.5 A DC = 80% 1.6 2 A Switch VCESAT ISW = 2A (25°C, 0°C) 300 350 mV ISW = 2A (70°C) 330 400 mV Burst Mode Operation Switch Current Limit L = 3.3 µH, VOUT = 3.3V, VIN = 1.2V 200 mA Shutdown Pin Current VSHDN = 1.1V q 2.5 4.0 µA VSHDN = 6V 13 26 µA VSHDN = 0V q – 1.5 – 2.5 µA LBI Threshold Voltage q 180 200 220 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 530 nA |
类似零件编号 - LT1308 |
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类似说明 - LT1308 |
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