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LTC3727EG-1 Datasheet(PDF) 2 Page - Linear Technology |
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LTC3727EG-1 Datasheet(HTML) 2 Page - Linear Technology |
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2 / 32 page  2 LTC3727/LTC3727-1 3727f ORDER PART NUMBER LTC3727EG LTC3727EG-1 Input Supply Voltage (VIN).........................36V to –0.3V Top Side Driver Voltages (BOOST1, BOOST2) ...................................42V to – 0.3V Switch Voltage (SW1, SW2) .........................36V to – 5V INTVCC, EXTVCC, (BOOST1-SW1), (BOOST2-SW2) ........................................8.5V to – 0.3V RUN/SS1, RUN/SS2, PGOOD ..................... 7V to – 0.3V SENSE1+, SENSE2 +, SENSE1–, SENSE2 – Voltages .....................................14V to – 0.3V PLLIN, PLLFLTR, FCB, Voltage ............ INTVCC to –0.3V TJMAX = 125°C, θJA = 95°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 RUN/SS1 SENSE1+ SENSE1– VOSENSE1 PLLFLTR PLLIN FCB ITH1 SGND 3.3VOUT ITH2 VOSENSE2 SENSE2– SENSE2+ PGOOD TG1 SW1 BOOST1 VIN BG1 EXTVCC INTVCC PGND BG2 BOOST2 SW2 TG2 RUN/SS2 Consult LTC Marketing for parts specified with wider operating temperature ranges. (Note 1) ITH1, ITH2, VOSENSE1, VOSENSE2 Voltages ...2.7V to –0.3V Peak Output Current <10 µs (TG1, TG2, BG1, BG2) ... 3A INTVCC Peak Output Current ................................ 50mA Operating Temperature Range (Note 2) .. – 40 °C to 85°C Junction Temperature (Note 3) ............................. 125 °C Storage Temperature Range ................. – 65 °C to 150°C Storage Temperature Range (UH Package) ....................................... – 65 °C to 125°C Lead Temperature (Soldering, 10 sec).................. 300 °C 32 31 30 29 28 27 26 25 9 10 11 12 13 TOP VIEW 14 15 16 17 18 19 20 21 22 23 24 8 7 6 5 4 3 2 1 VOSENSE1 PLLFLTR PLLIN FCB ITH1 SGND 3.3VOUT ITH2 BOOST1 VIN BG1 EXTVCC INTVCC PGND BG2 BOOST2 UH PACKAGE 32-LEAD (5mm × 5mm) PLASTIC QFN ORDER PART NUMBER LTC3727EUH-1 TJMAX = 125°C, θJA = 34°C/W EXPOSED PAD IS SGND (MUST BE SOLDERED TO PCB) UH PART MARKING 37271 The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 15V, VRUN/SS1, 2 = 5V unless otherwise noted. ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loops VOSENSE1, 2 Regulated Feedback Voltage (Note 4); ITH1, 2 Voltage = 1.2V q 0.792 0.800 0.808 V IVOSENSE1, 2 Feedback Current (Note 4) – 5 – 50 nA VREFLNREG Reference Voltage Line Regulation VIN = 3.6V to 30V (Note 4) 0.002 0.02 %/V VLOADREG Output Voltage Load Regulation (Note 4) Measured in Servo Loop; ∆ITH Voltage = 1.2V to 0.7V q 0.1 0.5 % Measured in Servo Loop; ∆ITH Voltage = 1.2V to 2.0V q – 0.1 – 0.5 % gm1, 2 Transconductance Amplifier gm ITH1, 2 = 1.2V; Sink/Source 5µA (Note 4) 1.3 mmho |
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