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LT3506AEDHD-PBF Datasheet(PDF) 3 Page - Linear Technology |
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LT3506AEDHD-PBF Datasheet(HTML) 3 Page - Linear Technology |
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3 / 24 page  LT3506/LT3506A 3506afb The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C, VIN = 5V, VBOOST = 8V, unless otherwise noted. (Note 2) ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN(MIN) Undervoltage Lockout ● 3.4 3.6 V IINQ Quiescent Current Not Switching 3.8 4.8 mA IINSD Shutdown Current VRUNSS = 0V 30 45 µA VFB Feedback Voltage –40°C to 85°C, EDHD –40°C to 85°C, EFE –40°C to 125°C, IFE, IDHD ● ● ● 792 784 784 800 800 800 808 816 816 mV mV mV IFB FB Pin Bias Current VFB = 800mV, VC = 0.4V ● 40 100 nA VFB(REG) Reference Line Regulation VIN = 5V to 25V 0.005 %/V gmEA Error Amp GM 350 uMhos AV Error Amp Voltage Gain 400 IVC VC Source Current VC Sink Current VFB = 0.6V, VC = 0V VFB = 1.2V, VC = 1100mV 30 30 µA µA VVC(THRESH) VC Switching Threshold 0.7 V VVC(CLAMP) VC Clamp Voltage 1.9 V fSW Switching Frequency LT3506 LT3506A 500 1 575 1.1 650 1.2 kHz MHz Switching Phase (Note 5) 180 Deg DC Maximum Duty Cycle LT3506 LT3506A 89 78 93 88 % % VFB(SWTHRESH) Frequency Shift Threshold on FB 0.4 V fFOLD Foldback Frequency VFB = 0V 170 kHz ISW Switch Current Limit (Note 3) 2.0 2.6 3.6 A VSW(SAT) Switch VCESAT (Note 4) ISW = 1A 210 mV ILSW Switch Leakage Current 10 µA VBOOST(MIN) Minimum Boost Voltage Above Switch ISW = 1A 1.5 2.5 V IBOOST BOOST Pin Current ISW = 1A 20 30 mA IRUN/SS RUN/SS Current 2.1 µA VRUN/SS(THRESH) RUN/SS Threshold 0.3 0.8 V VFB(PGTHRESH) VFB PG Threshold VFB Rising 720 mV VPG(LOW) PG Voltage Output Low VFB = 640mV, IPG = 250µA 0.22 0.4 V ILPG PG Pin Leakage VPG = 2V 0.1 1 µA Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LT3506E/LT3506AE are guaranteed to meet performance specifications from 0°C to 85°C. Specifications over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. The LT3506I/LT3506AI are guaranteed and tested over the full –40°C to 125°C operating temperature range. Note 3: Current limit is guaranteed by design and/or correlation to static test. Slope compensation reduces current limit at high duty cycle. Note 4: Switch VCESAT guaranteed by design. Note 5: Switching phase is guaranteed by design. |
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