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LTC3608 Datasheet(PDF) 3 Page - Linear Technology |
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LTC3608 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 26 page  LTC3608 3608fc SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS MainControlLoop SVIN Operating Input Voltage Range 4 18 V IQ Input DC Supply Current Normal Shutdown Supply Current 900 15 2000 30 µA µA VFB Feedback Reference Voltage ITH = 1.2V, –40°C to 85°C (Note 3) ITH = 1.2V, –40°C to 125°C (Note 3) l 0.594 0.590 0.600 0.600 0.606 0.610 V V ΔVFB(LINEREG) Feedback Voltage Line Regulation VIN = 4V to 18V, ITH = 1.2V (Note 3) 0.002 %/V ΔVFB(LOADREG) Feedback Voltage Load Regulation ITH = 0.5V to 1.9V (Note 3) –0.05 –0.3 % IFB Feedback Input Current VFB = 0.6V –5 ±50 nA gm(EA) Error Amplifier Transconductance ITH = 1.2V (Note 3) l 1.4 1.7 2 mS VFCB Forced Continuous Threshold l 0.54 0.6 0.66 V IFCB Forced Continuous Pin Current VFCB = 0.6V –1 –2 µA tON On-Time ION = 60µA, VON = 1.5V ION = 60µA, VON = 0V 220 280 110 340 ns ns tON(MIN) Minimum On-Time ION = 180µA, VON = 0V 60 100 ns tOFF(MIN) Minimum Off-Time ION = 30µA, VON = 1.5V 320 500 ns IVALLEY(MAX) Maximum Valley Current VRNG = 0.5V, VFB = 0.56V, FCB = 0V VRNG = 0V, VFB = 0.56V, FCB = 0V l l 5 8 11 16 A A IVALLEY(MIN) Maximum Reverse Valley Current VRNG = 0.5V, VFB = 0.64V, FCB = 0V VRNG = 0V, VFB = 0.64V, FCB = 0V 5.5 7.5 A A ΔVFB(OV) Output Overvoltage Fault Threshold 7 10 13 % VRUN/SS(ON) RUN Pin Start Threshold l 0.8 1.5 2 V VRUN/SS(LE) RUN Pin Latchoff Enable Threshold RUN/SS Pin Rising 4 4.5 V VRUN/SS(LT) RUN Pin Latchoff Threshold RUN/SS Pin Falling 3.5 4.2 V IRUN/SS(C) Soft-Start Charge Current VRUN/SS = 0V –0.5 –1.2 –3 µA IRUN/SS(D) Soft-Start Discharge Current VRUN/SS = 4.5V, VFB = 0V 0.8 1.8 3 µA VIN(UVLO) Undervoltage Lockout INTVCC Falling l 3.4 3.9 V VIN(UVLOR) Undervoltage Lockout Release INTVCC Rising l 3.5 4 V RDS(ON) Top Switch On-Resistance Bottom Switch On-Resistance 10 8 19 14 mΩ mΩ electrical characteristics Theldenotesthespecificationswhichapplyoverthefulloperating junctiontemperaturerange,otherwisespecificationsareatTA=25°C.VIN=15Vunlessotherwisenoted. |
Similar Part No. - LTC3608_15 |
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Similar Description - LTC3608_15 |
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