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LT1308A Datasheet(PDF) 3 Page - Linear Technology |
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LT1308A Datasheet(HTML) 3 Page - Linear Technology |
3 / 20 page LT1308A/LT1308B 3 1308abfb The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. Commercial Grade 0°C to 70°C. VIN = 1.1V, VSHDN = VIN, unless otherwise noted. ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IQ Quiescent Current Not Switching, LT1308A Switching, LT1308B VSHDN = 0V (LT1308A/LT1308B) 140 2.5 0.01 240 4 1 μA mA μA VFB Feedback Voltage l 1.20 1.22 1.24 V IB FB Pin Bias Current (Note 3) l 27 80 nA Reference Line Regulation 1.1V ≤ VIN ≤ 2V 2V ≤ VIN ≤ 10V l 0.03 0.01 0.4 0.2 %/V %/V Minimum Input Voltage 0.92 1 V gm Error Amp Transconductance ∆I = 5μA 60 μmhos AV Error Amp Voltage Gain 100 V/V fOSC Switching Frequency VIN = 1.2V l 500 600 700 kHz Maximum Duty Cycle l 82 90 % Switch Current Limit Duty Cycle = 30% (Note 4) 2 3 4.5 A Switch VCESAT ISW = 2A (25°C, 0°C), VIN = 1.5V ISW = 2A (70°C), VIN = 1.5V 290 330 350 400 mV mV Burst Mode Operation Switch Current Limit (LT1308A) VIN = 2.5V, Circuit of Figure 1 400 mA Shutdown Pin Current VSHDN = 1.1V VSHDN = 6V VSHDN = 0V l l l 2 20 0.01 5 35 0.1 μA μA μA LBI Threshold Voltage l 196 194 200 200 204 206 mV mV LBO Output Low ISINK = 50μA l 0.1 0.25 V LBO Leakage Current VLBI = 250mV, VLBO = 5V l 0.01 0.1 μA LBI Input Bias Current (Note 5) VLBI = 150mV 33 100 nA Low-Battery Detector Gain 3000 V/V Switch Leakage Current VSW = 5V l 0.01 10 μA The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. Industrial Grade –40°C to 85°C. VIN = 1.2V, VSHDN = VIN, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IQ Quiescent Current Not Switching, LT1308A Switching, LT1308B VSHDN = 0V (LT1308A/LT1308B) l l l 140 2.5 0.01 240 4 1 μA mA μA VFB Feedback Voltage l 1.19 1.22 1.25 V IB FB Pin Bias Current (Note 3) l 27 80 nA Reference Line Regulation 1.1V ≤ VIN ≤ 2V 2V ≤ VIN ≤ 10V l l 0.05 0.01 0.4 0.2 %/V %/V Minimum Input Voltage 0.92 1 V gm Error Amp Transconductance ∆I = 5μA 60 μmhos AV Error Amp Voltage Gain 100 V/V |
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Similar Description - LT1308A_15 |
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