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LTC3850IGN-PBF Datasheet(PDF) 2 Page - Linear Technology |
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LTC3850IGN-PBF Datasheet(HTML) 2 Page - Linear Technology |
2 / 36 page LTC3850/LTC3850-1 2 38501fb ABSOLUTE MAXIMUM RATINGS Input Supply Voltage (VIN).........................28V to –0.3V Input Supply Voltage (VIN), LTC3850I Only ....................................... 30V to –0.3V Input Supply Transient Voltage (VIN) < 500ms, with INTVCC ≥ 5V, LTC3850I Only...................34V to –0.3V Top Side Driver Voltages BOOST1, BOOST2.................................. 34V to –0.3V Switch Voltage (SW1, SW2) ......................... 28V to –5V Switch Voltage (SW1, SW2), LTC3850I Only ....................................... 30V to –0.3V INTVCC, RUN1, RUN2, PGOOD, EXTVCC, (BOOST1-SW1), (BOOST2-SW2)................. 6V to –0.3V (Note 1) SENSE1+, SENSE2+, SENSE1–, SENSE2– Voltages..................................... 5.5V to –0.3V MODE/PLLIN, ILIM,TK/SS1,TK/SS2, FREQ/PLLFLTR Voltages ................................................ INTVCC to –0.3V ITH1, ITH2, VFB1, VFB2 Voltages..................2.7V to –0.3V INTVCC Peak Output Current ................................100mA Operating Temperature Range (Note 2)....–40°C to 85°C Junction Temperature (Note 3) ............................. 125°C Storage Temperature Range...................–65°C to 125°C Lead Temperature (Soldering, 10 sec) (GN Package).................................................... 300°C 1 2 3 4 5 6 7 8 9 10 11 12 13 14 TOP VIEW GN PACKAGE 28-LEAD NARROW PLASTIC SSOP 28 27 26 25 24 23 22 21 20 19 18 17 16 15 RUN1 SENSE1+ SENSE1– TK/SS1 ITH1 VFB1 SGND VFB2 ITH2 TK/SS2 SENSE2– SENSE2+ RUN2 ILIM (EXTVCC)* FREQ/PLLFLTR MODE/PLLIN SW1 TG1 BOOST1 BG1 VIN INTVCC BG2 PGND BOOST2 TG2 SW2 PGOOD TJMAX = 125°C, θJA = 95°C/W *PIN 14 = ILIM FOR LTC3850GN, EXTVCC FOR LTC3850GN-1 28 27 26 25 24 23 8 9 TOP VIEW 29 UF PACKAGE 28-LEAD (4mm × 4mm) PLASTIC QFN 10 11 12 13 14 TK/SS1 ITH1 VFB1 VFB2 ITH2 TK/SS2 SENSE2– BOOST1 BG1 VIN INTVCC BG2 PGND BOOST2 16 15 17 18 19 20 21 6 7 5 4 3 2 1 22 TJMAX = 125°C, θJA = 37°C/W, θJC = 2.6°C/W EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB 9 10 TOP VIEW UFD PACKAGE 28-LEAD (4mm × 5mm) PLASTIC QFN 11 12 13 28 27 26 25 24 14 23 6 5 4 3 2 1 SENSE1– TK/SS1 ITH1 VFB1 VFB2 ITH2 TK/SS2 SENSE2– BOOST1 BG1 VIN INTVCC BG2 PGND BOOST2 TG2 7 17 18 19 20 21 22 16 8 15 29 TJMAX = 125°C, θJA = 34°C/W, EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB PIN CONFIGURATION |
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