Datasheet LTC3869, LTC3869-2 (Analog Devices) - 2

LTC3869/LTC3869-2
absoluTe MaxiMuM raTings (Note 1)
Input Supply Voltage: VIN ... 40V to –0.3V ITH1, ITH2, VFB1, VFB2 Voltages ...INTVCC to –0.3V Top Side Driver Voltages: INTVCC Peak Output Current ..100mA BOOST1, BOOST2 .. 46V to –0.3V Operating Junction Temperature Range Switch Voltage: SW1, SW2 ... 40V to –5V (Note 2) ..–40°C to 125°C INTVCC, RUN1, RUN2, PGOOD, EXTVCC, Junction Temperature (Note 3) ... 125°C BOOST1-SW1, BOOST2-SW2 ... 6V to –0.3V Storage Temperature Range ..–65°C to 150°C SENSE1+, SENSE2+, SENSE1–, Lead Temperature (Soldering, 10 sec) SENSE2– Voltages ..13V to –0.3V GN Package ..300°C MODE/PLLIN, ILIM, TK/SS1, TK/SS2, FREQ Voltages ..INTVCC to –0.3V
pin conFiguraTion
TOP VIEW TOP VIEW TOP VIEW + RUN1 1 28 FREQ – + SENSE1 RUN1 FREQ MODE/PLLIN SW1 TG1 SENSE1+ 2 27 MODE/PLLIN SENSE1 SENSE1 RUN1 FREQ MODE/PLLIN SW1 TG1 28 27 26 25 24 23 SENSE1– 3 26 SW1 28 27 26 25 24 23 22 SENSE1– 1 22 BOOST1 V 4 25 FB1 TG1 TK/SS1 1 21 BOOST1 TK/SS1 2 21 BG1 TK/SS1 5 24 BOOST1 ITH1 2 20 BG1 ITH1 3 20 VIN I 6 23 TH1 BG1 VFB1 3 19 VIN VFB1 4 SGND 19 INTVCC SGND 7 22 VIN SGND V 4 18 INTV 29 FB2 CC V 29 FB2 5 18 BG2 I 8 21 TH2 INTVCC ITH2 5 17 BG2 ITH2 6 17 PGND TK/SS2 9 20 BG2 TK/SS2 6 16 PGND TK/SS2 7 16 BOOST2 V 10 19 FB2 PGND SENSE2– 7 15 BOOST2 SENSE2– 8 15 TG2 SENSE2– 11 18 BOOST2 8 9 10 11 12 13 14 9 10 11 12 13 14 + + SENSE2+ 12 17 TG2 I LIM V CC TG2 I LIM CC RUN2 SW2 RUN2 SW2 RUN2 13 16 SW2 EXT PGOOD PGOOD SENSE2 SENSE2 EXTV EXTV 14 15 CC PGOOD UFD PACKAGE UF PACKAGE 28-LEAD (4mm 28-LEAD (4mm × 4mm) PLASTIC QFN × 5mm) PLASTIC QFN GN PACKAGE T 28-LEAD PLASTIC SSOP TJMAX = 125°C, θJA = 37°C/W, θJC = 2.6°C/W JMAX = 125°C, θJA = 34°C/W, EXPOSED PAD (PIN 29) IS SGND, MUST BE EXPOSED PAD (PIN 29) IS SGND, MUST BE TJMAX = 125°C, θJA = 80°C/W SOLDERED TO PCB SOLDERED TO PCB
orDer inForMaTion LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3869EUF#PBF LTC3869EUF#TRPBF 3869 28-Lead (4mm × 4mm) Plastic QFN –40°C to 125°C LTC3869IUF#PBF LTC3869IUF#TRPBF 3869 28-Lead (4mm × 4mm) Plastic QFN –40°C to 125°C LTC3869EUFD#PBF LTC3869EUFD#TRPBF 3869 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C LTC3869IUFD#PBF LTC3869IUFD#TRPBF 3869 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C LTC3869IGN-2#PBF LTC3869IGN-2#TRPBF LTC3869GN-2 28-Lead Narrow Plastic SSOP –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 nonstandard 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/ 38692fb 2 For more information www.linear.com/LTC3869 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts