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LTC3713EG Datasheet(PDF) 2 Page - Linear Technology |
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LTC3713EG Datasheet(HTML) 2 Page - Linear Technology |
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2 / 24 page  2 LTC3713 3713fa (Note 1) Input Supply Voltage (VIN2) .......................10V to – 0.3V Boosted Topside Driver Supply Voltage (BOOST) ............................................... 42V to – 0.3V VIN1, ION, SW1, SENSE+ Voltages ............. 36V to – 0.3V RUN/SS, PGOOD Voltages ......................... 7V to – 0.3V FCB, VON, VRNG Voltages .......... INTVCC + 0.3V to – 0.3V ITH, VFB1, SENSE– Voltages ..................... 2.7V to – 0.3V SW2 Voltage ............................................. 36V to – 0.4V VFB2 Voltage ................................................. VIN2 + 0.3V SHDN Voltage ......................................................... 10V TG, BG, INTVCC Peak Currents.................................. 2A TG, BG, INTVCC RMS Currents ............................ 50mA Operating Ambient Temperature Range (Note 4) ................................... – 40 °C to 85°C Junction Temperature (Note 2) ............................ 125 °C Storage Temperature Range ................. – 65 °C to 150°C Lead Temperature (Soldering, 10 sec).................. 300 °C ORDER PART NUMBER LTC3713EG TJMAX = 125°C, θJA = 130°C/ W The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C. VIN1 = 15V, VIN2 = 1.5V unless otherwise noted. ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO ELECTRICAL CHARACTERISTICS 1 2 3 4 5 6 7 8 9 10 11 12 TOP VIEW G PACKAGE 24-LEAD PLASTIC SSOP 24 23 22 21 20 19 18 17 16 15 14 13 RUN/SS VON PGOOD VRNG FCB ITH SGND1 ION VFB1 SHDN SGND2 VFB2 BOOST TG SW1 SENSE+ SENSE– PGND1 BG INTVCC VIN1 VIN2 PGND2 SW2 Consult LTC Marketing for parts specified with wider operating temperature ranges. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Buck Regulator IQ(VIN1) Input DC Supply Current (VIN1) Normal 900 2000 µA Shutdown Supply Current 15 30 µA VFB1 Feedback Reference Voltage ITH = 1.2V (Note 3) q 0.792 0.800 0.808 V IFB1 Feedback Current (Note 3) –5 ±50 nA ∆VFB1(LINEREG) Feedback Voltage Line Regulation VIN1 = 4V to 30V, ITH = 1.2V (Note 3) 0.002 %/V ∆VFB1(LOADREG) Feedback Voltage Load Regulation ITH = 0.5V to 1.9V (Note 3) q – 0.05 – 0.3 % gm(EA) Error Amplifier Transconductance ITH = 1.2V (Note 3) q 1.4 1.7 2 mS VFCB Forced Continuous Threshold q 0.76 0.8 0.84 V IFCB Forced Continuous Pin Current VFCB = 0.8V – 1 – 2 µA tON On-Time ION = 60µA, VON = 1.5V 200 250 300 ns ION = 30µA, VON = 1.5V 400 500 600 ns tON(MIN) Minimum On-Time ION = 180µA 50 100 ns tOFF(MIN) Minimum Off-Time 250 400 ns VSENSE(MAX) Maximum Current Sense Threshold VRNG = 1V, VFB1 = 0.76V q 113 133 153 mV VPGND – VSW VRNG = 0V, VFB1 = 0.76V q 79 93 107 mV VRNG = INTVCC, VFB1 = 0.76V q 158 186 214 mV VSENSE(MIN) Minimum Current Sense Threshold VRNG = 1V, VFB1 = 0.84V – 67 mV VPGND – VSW VRNG = 0V, VFB1 = 0.84V – 47 mV VRNG = INTVCC, VFB1 = 0.84V – 93 mV ∆VFB1(OV) Output Overvoltage Fault Threshold 5.5 7.5 9.5 % ∆VFB1(UV) Output Undervoltage Fault Threshold 520 600 680 mV VRUN/SS(ON) RUN Pin Start Threshold q 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 |
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