Datasheet LTC3870 (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | PolyPhase Step-Down Slave Controller for Digital Power System Management |
| Pages / Page | 22 / 2 — absoluTe MaxiMuM raTings. pin conFiguraTion. (Note 1). orDer inForMaTion … |
| File Format / Size | PDF / 928 Kb |
| Document Language | English |
absoluTe MaxiMuM raTings. pin conFiguraTion. (Note 1). orDer inForMaTion LEAD FREE FINISH. TAPE AND REEL. PART MARKING*
Model Line for this Datasheet
Text Version of Document
LTC3870
absoluTe MaxiMuM raTings pin conFiguraTion (Note 1)
VIN ... –0.3V to 65V TOP VIEW BOOST0, BOOST1 ...–0.3V to 71V SW0, SW1 .. –5V to 65V I TH0 FREQ FAULT0 FAULT1 TG0 SW0 I + − + – 28 27 26 25 24 23 SENSE0 , ISENSE0 , ISENSE1 , ISENSE1 ..–0.3V to 15V MODE0 1 22 BOOST0 (BOOST0-SW0), (BOOST1-SW1) ... –0.3V to 6V I + SENSE0 2 21 BG0 INTVCC, RUN0/RUN1 ... –0.3V to 6V I – SENSE0 3 20 VIN EXTVCC .. –0.3V to 14V RUN0 4 29 19 PGND MODE0/MODE1, FREQ, PHASMD, I SGND LIM ...–0.3V to INTVCC RUN1 5 18 EXTVCC FAULT0/FAULT1, I I – SENSE1 6 17 INTV TH0/ITH1, SYNC .. –0.3V to 3.6V CC INTV I + SENSE1 7 16 BG1 CC, EXTVCC Peak Current (Note 9) ...100mA Operating Junction Temperature Range MODE1 8 15 BOOST1 9 10 11 12 13 14 .. –40°C to 125°C Storage Temperature Range .. –65°C to 150°C I TH1 I LIM TG1 SYNC SW1 PHASMD UFD PACKAGE 28-LEAD (4mm × 5mm) PLASTIC QFN TJMAX = 125°C, θJA = 43°C/W, θJC_BOT = 3.4°C/W EXPOSED PAD (PIN 29) IS SGND, MUST BE SOLDERED TO PCB
orDer inForMaTion LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3870EUFD#PBF LTC3870EUFD#TRPBF 3870 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C LTC3870IUFD#PBF LTC3870IUFD#TRPBF 3870 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. 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/
e lecTrical characTerisTics The
l
denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C. (Note 2) VIN = 15V, VRUN0,VRUN1 = 3.3V, fSYNC = 350kHz (externally driven) unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Voltage Range (Note 3) 4.5 60 V VOUT Output Voltage Range (Note 4) 0.5 14 V IQ Input Voltage Supply Current VRUN0,VRUN1 = 0V (Note 5) 1.1 mA Normal Operation VRUN0,VRUN1 = 3.3V, No Caps on TG and BG 2.6 mA VUVLO Undervoltage Lockout Threshold VINTVCC Falling 3.7 V When VIN > 4.2V VINTVCC Rising 4.0 V 3870fb 2 For more information www.linear.com/LTC3870
absoluTe MaxiMuM raTings pin conFiguraTion (Note 1)
VIN ... –0.3V to 65V TOP VIEW BOOST0, BOOST1 ...–0.3V to 71V SW0, SW1 .. –5V to 65V I TH0 FREQ FAULT0 FAULT1 TG0 SW0 I + − + – 28 27 26 25 24 23 SENSE0 , ISENSE0 , ISENSE1 , ISENSE1 ..–0.3V to 15V MODE0 1 22 BOOST0 (BOOST0-SW0), (BOOST1-SW1) ... –0.3V to 6V I + SENSE0 2 21 BG0 INTVCC, RUN0/RUN1 ... –0.3V to 6V I – SENSE0 3 20 VIN EXTVCC .. –0.3V to 14V RUN0 4 29 19 PGND MODE0/MODE1, FREQ, PHASMD, I SGND LIM ...–0.3V to INTVCC RUN1 5 18 EXTVCC FAULT0/FAULT1, I I – SENSE1 6 17 INTV TH0/ITH1, SYNC .. –0.3V to 3.6V CC INTV I + SENSE1 7 16 BG1 CC, EXTVCC Peak Current (Note 9) ...100mA Operating Junction Temperature Range MODE1 8 15 BOOST1 9 10 11 12 13 14 .. –40°C to 125°C Storage Temperature Range .. –65°C to 150°C I TH1 I LIM TG1 SYNC SW1 PHASMD UFD PACKAGE 28-LEAD (4mm × 5mm) PLASTIC QFN TJMAX = 125°C, θJA = 43°C/W, θJC_BOT = 3.4°C/W EXPOSED PAD (PIN 29) IS SGND, MUST BE SOLDERED TO PCB
orDer inForMaTion LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3870EUFD#PBF LTC3870EUFD#TRPBF 3870 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C LTC3870IUFD#PBF LTC3870IUFD#TRPBF 3870 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. 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/
e lecTrical characTerisTics The
l
denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C. (Note 2) VIN = 15V, VRUN0,VRUN1 = 3.3V, fSYNC = 350kHz (externally driven) unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Voltage Range (Note 3) 4.5 60 V VOUT Output Voltage Range (Note 4) 0.5 14 V IQ Input Voltage Supply Current VRUN0,VRUN1 = 0V (Note 5) 1.1 mA Normal Operation VRUN0,VRUN1 = 3.3V, No Caps on TG and BG 2.6 mA VUVLO Undervoltage Lockout Threshold VINTVCC Falling 3.7 V When VIN > 4.2V VINTVCC Rising 4.0 V 3870fb 2 For more information www.linear.com/LTC3870
