Datasheet LTC3789 (Analog Devices) - 2

LTC3789
absoluTe MaxiMuM raTings (Note 1)
Input Supply Voltage (VIN) ... 40V to –0.3V VINSNS, VOUTSNS .. 40V to –0.3V Topside Driver Voltages TG1, TG2, BG1, BG2 Voltages ... (Note 6) (BOOST1, BOOST2)... 46V to –0.3V ITH, FREQ, ILIM Voltages ...INTVCC to –0.3V Switch Voltage (SW1, SW2) .. 40V to –5V VFB Voltage ... 2.7V to –0.3V Current Sense Voltages (I + – OSENSE , IOSENSE ).. 40V to –0.3V RUN, PGOOD Voltage .. 6V to –0.3V BOOST1, BOOST2 – SW1, SW2 ... 6V to –0.3V Operating Junction Temperature Range TG1, TG2 – SW1, SW2 ... 6V to –0.3V (Notes 2, 3) .. –40°C to 125°C EXTVCC Voltage ... 14V to –0.3V Storage Temperature Range .. –65°C to 125°C INTVCC Voltage .. 6V to –0.3V INTVCC Peak Output Current ..100mA SENSE+, SENSE– Voltages ..INTVCC to –0.3V Lead Temperature (Soldering, 10 sec.) MODE/PLLIN, SS Voltages ...INTVCC to –0.3V GN Package ..300°C
pin conFiguraTion
TOP VIEW TOP VIEW V 1 28 + FB PGOOD SS 2 27 SW1 SENSE SS V FB PGOOD SW1 TG1 SENSE+ 3 26 TG1 28 27 26 25 24 23 SENSE– 4 25 BOOST1 SENSE– 1 22 BOOST1 I 5 24 ITH 2 21 TH PGND PGND SGND 6 23 BG1 SGND 3 20 BG1 29 MODE/PLLIN 7 22 V MODE/PLLIN 4 19 V IN IN SGND FREQ 5 18 FREQ 8 21 INTV INTV CC CC RUN 6 17 EXTV RUN 9 20 EXTV CC CC V 7 16 BG2 V 10 19 INSNS INSNS BG2 VOUTSNS 8 15 BOOST2 V 11 18 OUTSNS BOOST2 9 10 11 12 13 14 I 12 17 LIM TG2 + – I + 13 16 I LIM OSENSE SW2 TRIM SW2 TG2 I – 14 15 I OSENSE I OSENSE OSENSE TRIM UFD PACKAGE GN PACKAGE 28-LEAD (4mm × 5mm) PLASTIC QFN 28-LEAD NARROW PLASTIC SSOP TJMAX = 125°C, θJA = 34°C/W T EXPOSED PAD (PIN 29) IS SGND, MUST BE SOLDERED TO PCB JMAX = 125°C, θJA = 80°C/W
orDer inForMaTion LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3789EGN#PBF LTC3789EGN#TRPBF LTC3789 28-Lead Narrow Plastic SSOP –40°C to 125°C LTC3789IGN#PBF LTC3789IGN#TRPBF LTC3789 28-Lead Narrow Plastic SSOP –40°C to 125°C LTC3789EUFD#PBF LTC3789EUFD#TRPBF 3789 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C LTC3789IUFD#PBF LTC3789IUFD#TRPBF 3789 28-Lead (4mm × 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. 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/ 3789fc 2 For more information www.linear.com/LTC3789 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration order information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Typical Application Related Parts