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LTC3855 Datasheet(PDF) 2 Page - Linear Technology |
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LTC3855 Datasheet(HTML) 2 Page - Linear Technology |
2 / 50 page LTC3839 2 3839fa ABSOLUTE MAXIMUM RATINGS VIN Voltage................................................. –0.3V to 40V BOOST1, BOOST2 Voltages ....................... –0.3V to 46V SW1, SW2 Voltages ...................................... –5V to 40V INTVCC, DRVCC1, DRVCC2, EXTVCC, PGOOD, RUN, (BOOST1-SW1), (BOOST2-SW2), MODE/PLLIN Voltages ....................................................... –0.3V to 6V VOUTSENSE+, VOUTSENSE–, SENSE1+, SENSE2+, SENSE1–, SENSE2– Voltages ....................... –0.6V to 6V TRACK/SS Voltage....................................... –0.3V to 5V DTR, PHASMD, RT, VRNG, ITH Voltages ........................... –0.3V to (INTVCC + 0.3V) Operating Junction Temperature Range (Notes 2, 3, 4)........................................ –40°C to 125°C Storage Temperature Range .................. –65°C to 150°C (Note 1) ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC3839EUH#PBF LTC3839EUH#TRPBF 3839 32-Lead (5mm × 5mm) Plastic QFN –40°C to 125°C LTC3839IUH#PBF LTC3839IUH#TRPBF 3839 32-Lead (5mm × 5mm) Plastic QFN –40°C to 125°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/ 32 33 PGND 31 30 29 28 27 26 25 9 10 11 12 TOP VIEW UH PACKAGE 32-LEAD (5mm × 5mm) PLASTIC QFN 13 14 15 16 17 18 19 20 21 22 23 24 8 7 6 5 4 3 2 1 PHASMD MODE/PLLIN CLKOUT SGND RT ITH TRACK/SS VOUTSENSE + BG2 DRVCC2 EXTVCC INTVCC PGND VIN DRVCC1 BG1 TJMAX = 125°C, θJA = 44°C/W EXPOSED PAD (PIN 33) IS PGND, MUST BE SOLDERED TO PCB PIN CONFIGURATION ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C. VIN = 15V unless otherwise noted (Note 3). SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loops VIN Input Voltage Operating Range 4.5 38 V VOUT(REG) Regulated Output Voltage Operating Range VOUT Regulated Differentially with Respect to VOUTSENSE– 0.6 5.5 V IQ Input DC Supply Current RUN Enabled Shutdown Supply Current MODE/PLLIN = 0V, No Load RUN = 0V 3 15 mA μA VOUTSENSE(REG) Regulated Differential Feedback Voltage (VOUTSENSE+ – VOUTSENSE–) ITH1 = 1.2V (Note 5) TA = 25°C TA = 0°C to 85°C TA = –40°C to 125°C l l 0.5985 0.596 0.594 0.6 0.6 0.6 0.6015 0.604 0.606 V V V Regulated Differential Feedback Voltage Over Line, Load and Common Mode VIN = 4.5V to 38V, ITH1 = 0.5V to 1.9V –0.5V < VOUTSENSE– < 0.5V (Notes 5, 7) l 0.591 0.6 0.609 V |
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