LTC3714 2 3714f (Note 1) Input Supply Voltage (VIN), ION..................36V to –0.3VBoosted Topside Driver Supply Voltage (BOOST)................................................... 42V to –0.3VSW, SENSE Voltages................................... 36V to –5VEXTVCC, (BOOST – SW), RUN/SS, VID0-VID4, PGOOD, FCB Voltages............................... 7V to –0.3VVON, VRNG Voltages................(INTVCC + 0.3V) to –0.3VITH, VFB, VOSENSE Voltages....................... 2.7V to –0.3VTG, BG, INTVCC, EXTVCC Peak Currents.................... 2ATG, BG, INTVCC, EXTVCC RMS Currents.............. 50mAOPVIN, OP+, OP–.......................................................0V to 18VOperating Ambient Temperature Range LTC3714EG (Note 2)..........................–40°C to 85°CJunction Temperature (Note 3)............................ 125°CStorage Temperature Range.................–65°C to 150°CLead Temperature (Soldering, 10 sec)..................300°C ORDER PARTNUMBERLTC3714EG TJMAX = 125°C, θJA = 130°C/W ABSOLUTE AXI U RATI GS WWW UPACKAGE/ORDER I FOR ATIO UUW 123456789 10 11121314 TOP VIEW G PACKAGE 28-LEAD PLASTIC SSOP2827262524232221201918171615BGPGNDSENSESWTGBOOSTVID0VID1VID2 RUN/SSVONPGOODVRNGITHINTVCCVINEXTVCCVID4VID3VOSENSEVFBIONFCBSGNDOPOUTOP+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 SYMBOLPARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loop IQ Input DC Supply Current Normal 9002000μA Shutdown Supply Current15 30μAVFB Feedback Reference VoltageITH = 1.2V (Note 4) q 0.5940.6000.606V∆VFB(LINEREG)Feedback Voltage Line RegulationVIN = 4V to 30V (Note 4), ITH = 1.2V0.002%/V∆VFB(LOADREG)Feedback Voltage Load RegulationITH = 0.5V to 1.9V (Note 4)q–0.05 –0.3%gm(EA)Error Amplifier TransconductanceITH = 1.2V (Note 4)q1.41.72msVFCBForced Continuous Thresholdq0.570.60.63VIFCBForced Continuous CurrentVFCB = 0.6V –1–2μAtONOn-TimeION = 60μA, VON = 1.5V200 250300nstON(MIN)Minimum On-TimeION = 180μA, VON = 0V50100nstOFF(MIN)Minimum Off-Time ION = 60μA, VON = 1.5V250 400nsVSENSE(MAX) Maximum Current Sense Threshold VRNG = 1V, VFB = 0.56Vq113133153mVVRNG = 0V, VFB = 0.56Vq7993107mVVRNG = INTVCC, VFB = 0.56Vq158186214 mVVSENSE(MIN) Minimum Current Sense Threshold VRNG = 1V, VFB = 0.64V–67mVVRNG = 0V, VFB = 0.64V–33mVVRNG = INTVCC, VFB = 0.64V –93mV ∆VFB(OV)Output Overvoltage Fault Threshold7.51012.5%∆VFB(UV)Output Undervoltage Fault Threshold340400460mV
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