Datasheet LTC3868 (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | Low IQ, Dual 2-Phase Synchronous Step-Down Controller |
| 页数 / 页 | 38 / 2 — ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION … |
| 文件格式/大小 | PDF / 406 Kb |
| 文件语言 | 英语 |
ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION LEAD FREE FINISH. TAPE AND REEL. PART MARKING*
该数据表的模型线
文件文字版本
LTC3868
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
TOP VIEW Input Supply Voltage (VIN) ... –0.3V to 28V + Topside Driver Voltages BOOST1, BOOST2 ... –0.3V to 34V SENSE1 V FB1 I TH1 SS1 I LIM PGOOD1 TG1 SW1 32 31 30 29 28 27 26 25 Switch Voltage (SW1, SW2) ... –5V to 28V SENSE1– 1 24 BOOST1 PLLIN/MODE FREQ 2 23 BG1 (BOOST1-SW1), (BOOST2-SW2) .. –0.3V to 6V PHASMD 3 22 VIN RUN1, RUN2 .. –0.3V to 8V CLKOUT 4 21 PGND 33 Maximum Current Sourced into Pin from PLLIN/MODE 5 SGND 20 EXTVCC SGND 6 19 INTV Source >8V ..100µA CC RUN1 7 18 BG2 SENSE1+, SENSE2+, SENSE1– RUN2 8 17 BOOST2 SENSE2– Voltages ... –0.3V to 16V 9 10 11 12 13 14 15 16 FREQ Voltages ...–0.3V to INTVCC – + V FB2 I TH2 SS2 TG2 SW2 ILIM, PHASMD Voltages ...–0.3V to INTVCC SENSE2 SENSE2 PGOOD2 EXTVCC ... –0.3V to 14V UH PACKAGE I 32-LEAD (5mm × 5mm) PLASTIC QFN TH1, ITH2,VFB1, VFB2 Voltages... –0.3V to 6V TJMAX = 125°C, qJA = 34°C/W PGOOD1, PGOOD2 Voltages ... –0.3V to 6V EXPOSED PAD (PIN 33) IS SGND, MUST BE SOLDERED TO PCB SS1, SS2, INTVCC Voltages ... –0.3V to 6V Operating Temperature Range (Note 2) ...–40°C to 85°C 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
LTC3868EUH#PBF LTC3868EUH#TRPBF 3868 32-Lead (5mm × 5mm) Plastic QFN –40°C to 85°C LTC3868IUH#PBF LTC3868IUH#TRPBF 3868 32-Lead (5mm × 5mm) Plastic QFN –40°C to 85°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 temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, VRUN1,2 = 5V, EXTVCC = 0V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Supply Operating Voltage Range 4 24 V VFB1,2 Regulated Feedback Voltage (Note 4) ITH1,2 Voltage = 1.2V l 0.788 0.8 0.812 V IFB1,2 Feedback Current (Note 4) ±5 ±50 nA VREFLNREG Reference Voltage Line Regulation (Note 4) VIN = 4.5V to 24V 0.002 0.02 %/V 3868fe 2 For more information www.linear.com/LTC3868 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Typical Performance Characteristics Pin Functions Operation Package Description Typical Application Related Parts
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
TOP VIEW Input Supply Voltage (VIN) ... –0.3V to 28V + Topside Driver Voltages BOOST1, BOOST2 ... –0.3V to 34V SENSE1 V FB1 I TH1 SS1 I LIM PGOOD1 TG1 SW1 32 31 30 29 28 27 26 25 Switch Voltage (SW1, SW2) ... –5V to 28V SENSE1– 1 24 BOOST1 PLLIN/MODE FREQ 2 23 BG1 (BOOST1-SW1), (BOOST2-SW2) .. –0.3V to 6V PHASMD 3 22 VIN RUN1, RUN2 .. –0.3V to 8V CLKOUT 4 21 PGND 33 Maximum Current Sourced into Pin from PLLIN/MODE 5 SGND 20 EXTVCC SGND 6 19 INTV Source >8V ..100µA CC RUN1 7 18 BG2 SENSE1+, SENSE2+, SENSE1– RUN2 8 17 BOOST2 SENSE2– Voltages ... –0.3V to 16V 9 10 11 12 13 14 15 16 FREQ Voltages ...–0.3V to INTVCC – + V FB2 I TH2 SS2 TG2 SW2 ILIM, PHASMD Voltages ...–0.3V to INTVCC SENSE2 SENSE2 PGOOD2 EXTVCC ... –0.3V to 14V UH PACKAGE I 32-LEAD (5mm × 5mm) PLASTIC QFN TH1, ITH2,VFB1, VFB2 Voltages... –0.3V to 6V TJMAX = 125°C, qJA = 34°C/W PGOOD1, PGOOD2 Voltages ... –0.3V to 6V EXPOSED PAD (PIN 33) IS SGND, MUST BE SOLDERED TO PCB SS1, SS2, INTVCC Voltages ... –0.3V to 6V Operating Temperature Range (Note 2) ...–40°C to 85°C 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
LTC3868EUH#PBF LTC3868EUH#TRPBF 3868 32-Lead (5mm × 5mm) Plastic QFN –40°C to 85°C LTC3868IUH#PBF LTC3868IUH#TRPBF 3868 32-Lead (5mm × 5mm) Plastic QFN –40°C to 85°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 temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, VRUN1,2 = 5V, EXTVCC = 0V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Supply Operating Voltage Range 4 24 V VFB1,2 Regulated Feedback Voltage (Note 4) ITH1,2 Voltage = 1.2V l 0.788 0.8 0.812 V IFB1,2 Feedback Current (Note 4) ±5 ±50 nA VREFLNREG Reference Voltage Line Regulation (Note 4) VIN = 4.5V to 24V 0.002 0.02 %/V 3868fe 2 For more information www.linear.com/LTC3868 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Typical Performance Characteristics Pin Functions Operation Package Description Typical Application Related Parts