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LTC3714EG Datasheet(PDF) 2 Page - Linear Technology |
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LTC3714EG Datasheet(HTML) 2 Page - Linear Technology |
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2 / 28 page  LTC3714 2 3714f (Note 1) Input Supply Voltage (VIN), ION..................36V to –0.3V Boosted Topside Driver Supply Voltage (BOOST) ................................................... 42V to – 0.3V SW, SENSE Voltages ................................... 36V to – 5V EXTVCC, (BOOST – SW), RUN/SS, VID0-VID4, PGOOD, FCB Voltages ............................... 7V to – 0.3V VON, VRNG Voltages ................(INTVCC + 0.3V) to –0.3V ITH, VFB, VOSENSE Voltages ....................... 2.7V to –0.3V TG, BG, INTVCC, EXTVCC Peak Currents .................... 2A TG, BG, INTVCC, EXTVCC RMS Currents .............. 50mA OPVIN, OP +, OP – ....................................................... 0V to 18V Operating Ambient Temperature Range LTC3714EG (Note 2) .......................... – 40 °C to 85°C Junction Temperature (Note 3) ............................ 125 °C Storage Temperature Range ................. – 65 °C to 150°C Lead Temperature (Soldering, 10 sec).................. 300 °C ORDER PART NUMBER LTC3714EG TJMAX = 125°C, θJA = 130°C/ W ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 TOP VIEW G PACKAGE 28-LEAD PLASTIC SSOP 28 27 26 25 24 23 22 21 20 19 18 17 16 15 BG PGND SENSE SW TG BOOST VID0 VID1 VID2 RUN/SS VON PGOOD VRNG ITH INTVCC VIN EXTVCC VID4 VID3 VOSENSE VFB ION FCB SGND OPOUT OP + OP – OPVIN The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C. VIN = 15V unless otherwise noted. ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loop IQ Input DC Supply Current Normal 900 2000 µA Shutdown Supply Current 15 30 µA VFB Feedback Reference Voltage ITH = 1.2V (Note 4) q 0.594 0.600 0.606 V ∆VFB(LINEREG) Feedback Voltage Line Regulation VIN = 4V to 30V (Note 4), ITH = 1.2V 0.002 %/V ∆VFB(LOADREG) Feedback Voltage Load Regulation ITH = 0.5V to 1.9V (Note 4) q – 0.05 – 0.3 % gm(EA) Error Amplifier Transconductance ITH = 1.2V (Note 4) q 1.4 1.7 2 ms VFCB Forced Continuous Threshold q 0.57 0.6 0.63 V IFCB Forced Continuous Current VFCB = 0.6V –1 – 2 µA tON On-Time ION = 60µA, VON = 1.5V 200 250 300 ns tON(MIN) Minimum On-Time ION = 180µA, VON = 0V 50 100 ns tOFF(MIN) Minimum Off-Time ION = 60µA, VON = 1.5V 250 400 ns VSENSE(MAX) Maximum Current Sense Threshold VRNG = 1V, VFB = 0.56V q 113 133 153 mV VRNG = 0V, VFB = 0.56V q 79 93 107 mV VRNG = INTVCC, VFB = 0.56V q 158 186 214 mV VSENSE(MIN) Minimum Current Sense Threshold VRNG = 1V, VFB = 0.64V – 67 mV VRNG = 0V, VFB = 0.64V – 33 mV VRNG = INTVCC, VFB = 0.64V – 93 mV ∆VFB(OV) Output Overvoltage Fault Threshold 7.5 10 12.5 % ∆VFB(UV) Output Undervoltage Fault Threshold 340 400 460 mV VRUN/SS(ON) RUN Pin Start Threshold q 0.8 1.5 2 V Consult LTC Marketing for parts specified with wider operating temperature ranges. |
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