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LT1317 Datasheet(PDF) 3 Page - Linear Technology |
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LT1317 Datasheet(HTML) 3 Page - Linear Technology |
3 / 16 page 3 LT1317/LT1317B ELECTRICAL C C HARA TERISTICS Commercial Grade VIN = 2V, VSHDN = 2V, TA = 25°C unless otherwise noted. Industrial Grade VIN = 2V, VSHDN = 2V, – 40°C ≤ TA ≤ 85°C unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IQ Quiescent Current Not Switching, VSHDN = 2V (LT1317) q 160 µA VSHDN = 0V (LT1317/LT1317B) q 40 µA VSHDN = 2V, Switching (LT1317B) q 7.5 mA VFB Feedback Voltage q 1.20 1.26 V IB FB Pin Bias Current (Note 2) q 80 nA Input Voltage Range q 1.7 12 V gm Error Amp Transconductance ∆I = 5µA q 70 140 240 µmhos Maximum Duty Cycle q 80 % Switch Current Limit (Note 3) VIN = 2.5V, Duty Cycle = 30% q 550 1350 mA fOSC Switching Frequency q 500 750 kHz Shutdown Pin Current VSHDN = VIN q 0.1 µA VSHDN = 0V q –7 µA LBI Threshold Voltage q 180 220 mV LBO Output Low ISINK = 10µA q 0.25 V LBO Leakage Current VLBI = 250mV, VLBO = 5V q 0.1 µA LBI Input Bias Current (Note 4) VLBI = 150mV q 60 nA Switch Leakage Current VSW = 5V q 3 µA Switch VCE Sat ISW = 500mA q 400 mV Reference Line Regulation 1.8V ≤ VIN ≤ 12V q 0.15 %/V SHDN Input Voltage High q 1.4 6 V SHDN Input Voltage Low q 0.4 V SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Shutdown Pin Current VSHDN = VIN q 0.015 0.06 µA VSHDN = 0V q – 2.3 – 6 µA LBI Threshold Voltage 190 200 210 mV q 180 200 220 mV LBO Output Low ISINK = 10µA q 0.15 0.25 V LBO Leakage Current VLBI = 250mV, VLBO = 5V q 0.02 0.1 µA LBI Input Bias Current (Note 4) VLBI = 150mV q 540 nA Low-Battery Detector Gain 1M Ω Load 2000 V/V Switch Leakage Current VSW = 5V q 0.01 3 µA Switch VCE Sat ISW = 500mA 300 350 mV q 400 mV Reference Line Regulation 1.8V ≤ VIN ≤ 12V q 0.08 0.15 %/V SHDN Input Voltage High q 1.4 6 V SHDN Input Voltage Low q 0.4 V Note 2: Bias current flows into FB pin. Note 3: Switch current limit guaranteed by design and/or correlation to static tests. Duty cycle affects current limit due to ramp generator. Note 4: Bias current flows out of LBI pin. The q denotes specifications which apply over the full operating temperature range. Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. |
Similar Part No. - LT1317_15 |
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Similar Description - LT1317_15 |
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