Datasheet LTC3858-2 (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | Low IQ, Dual 2-Phase Synchronous Step-Down Controller |
| Pages / Page | 40 / 2 — ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION. … |
| File Format / Size | PDF / 448 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
LTC3858-2
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
Input Supply Voltage (V TOP VIEW IN) ... –0.3V to 40V + Topside Driver Voltages FB1 BOOST1, BOOST2 ... –0.3V to 46V SENSE1 V I TH1 SS1 I LIM PGOOD1 TG1 SW1 32 31 30 29 28 27 26 25 Switch Voltage (SW1, SW2) ... –5V to 40V SENSE1– 1 24 BOOST1 (BOOST1-SW1), (BOOST2-SW2) .. –0.3V to 6V FREQ 2 23 BG1 RUN1, RUN2 ... –0.3V to 8V PHASMD 3 22 VIN Maximum Current Sourced into Pin CLKOUT 4 21 PGND 33 from Source >8V ..100μA PLLIN/MODE 5 SGND 20 EXTVCC SENSE1+, SENSE2+, SENSE1– SGND 6 19 INTVCC RUN1 7 18 BG2 SENSE2– Voltages ... –0.3V to 28V RUN2 8 17 BOOST2 PLLIN/MODE Voltage ... –0.3V to 6V 9 10 11 12 13 14 15 16 ILIM, PHASMD, FREQ Voltages ...–0.3V to INTVCC – + FB2 EXTV V I TH2 SS2 TG2 SW2 CC ... –0.3V to 14V SENSE2 SENSE2 PGOOD2 ITH1, ITH2,VFB1, VFB2 Voltages... –0.3V to 6V UH PACKAGE PGOOD1, PGOOD2 Voltages ... –0.3V to 6V 32-LEAD (5mm s 5mm) PLASTIC QFN TJMAX = 125°C, θJA = 34°C/W SS1, SS2, INTVCC Voltages ... –0.3V to 6V EXPOSED PAD (PIN 33) IS SGND, MUST BE SOLDERED TO PCB Operating Junction Temperature Range (Note 2) .. –40°C to 125°C Maximum Junction Temperature (Note 3) .. 125°C Storage Temperature Range .. –65°C to 150°C
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3858EUH-2#PBF LTC3858EUH-2#TRPBF 38582 32-Lead (5mm × 5mm) Plastic QFN –40°C to 125°C LTC3858IUH-2#PBF LTC3858IUH-2#TRPBF 38582 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/
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = 12V, VRUN1,2 = 5V, EXTVCC = 0V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Supply Operating Voltage 4 38 V Range VFB1,2 Regulated Feedback Voltage (Note 4) ITH1,2 = 1.2V –40°C to 125°C l 0.788 0.800 0.812 V –40°C to 85°C 0.792 0.800 0.808 V IFB1,2 Feedback Current (Note 4) ±5 ±50 nA VREFLNREG Reference Voltage Line Regulation (Note 4) VIN = 4.5V to 38V 0.002 0.02 %/V 38582f 2
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
Input Supply Voltage (V TOP VIEW IN) ... –0.3V to 40V + Topside Driver Voltages FB1 BOOST1, BOOST2 ... –0.3V to 46V SENSE1 V I TH1 SS1 I LIM PGOOD1 TG1 SW1 32 31 30 29 28 27 26 25 Switch Voltage (SW1, SW2) ... –5V to 40V SENSE1– 1 24 BOOST1 (BOOST1-SW1), (BOOST2-SW2) .. –0.3V to 6V FREQ 2 23 BG1 RUN1, RUN2 ... –0.3V to 8V PHASMD 3 22 VIN Maximum Current Sourced into Pin CLKOUT 4 21 PGND 33 from Source >8V ..100μA PLLIN/MODE 5 SGND 20 EXTVCC SENSE1+, SENSE2+, SENSE1– SGND 6 19 INTVCC RUN1 7 18 BG2 SENSE2– Voltages ... –0.3V to 28V RUN2 8 17 BOOST2 PLLIN/MODE Voltage ... –0.3V to 6V 9 10 11 12 13 14 15 16 ILIM, PHASMD, FREQ Voltages ...–0.3V to INTVCC – + FB2 EXTV V I TH2 SS2 TG2 SW2 CC ... –0.3V to 14V SENSE2 SENSE2 PGOOD2 ITH1, ITH2,VFB1, VFB2 Voltages... –0.3V to 6V UH PACKAGE PGOOD1, PGOOD2 Voltages ... –0.3V to 6V 32-LEAD (5mm s 5mm) PLASTIC QFN TJMAX = 125°C, θJA = 34°C/W SS1, SS2, INTVCC Voltages ... –0.3V to 6V EXPOSED PAD (PIN 33) IS SGND, MUST BE SOLDERED TO PCB Operating Junction Temperature Range (Note 2) .. –40°C to 125°C Maximum Junction Temperature (Note 3) .. 125°C Storage Temperature Range .. –65°C to 150°C
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3858EUH-2#PBF LTC3858EUH-2#TRPBF 38582 32-Lead (5mm × 5mm) Plastic QFN –40°C to 125°C LTC3858IUH-2#PBF LTC3858IUH-2#TRPBF 38582 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/
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = 12V, VRUN1,2 = 5V, EXTVCC = 0V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Supply Operating Voltage 4 38 V Range VFB1,2 Regulated Feedback Voltage (Note 4) ITH1,2 = 1.2V –40°C to 125°C l 0.788 0.800 0.812 V –40°C to 85°C 0.792 0.800 0.808 V IFB1,2 Feedback Current (Note 4) ±5 ±50 nA VREFLNREG Reference Voltage Line Regulation (Note 4) VIN = 4.5V to 38V 0.002 0.02 %/V 38582f 2
