Datasheet LTC3891 (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | Low IQ, 60V Synchronous Step-Down Controller |
| 页数 / 页 | 32 / 2 — ABSOLUTE MAXIMUM RATINGS. (Note 1). PIN CONFIGURATION. ORDER INFORMATION. … |
| 文件格式/大小 | PDF / 691 Kb |
| 文件语言 | 英语 |
ABSOLUTE MAXIMUM RATINGS. (Note 1). PIN CONFIGURATION. ORDER INFORMATION. LEAD FREE FINISH. TAPE AND REEL. PART MARKING*
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文件文字版本
LTC3891
ABSOLUTE MAXIMUM RATINGS (Note 1)
Input Supply Voltage (VIN) ... –0.3V to 65V ITH, VFB Voltages ... –0.3V to 6V Topside Driver Voltage (BOOST) ...–0.3V to 71V PGOOD Voltage .. –0.3V to 6V Switch Voltage (SW) ... –5V to 65V TRACK/SS Voltage ... –0.3V to 6V (BOOST-SW) .. –0.3V to 6V Operating Junction Temperature Range (Notes 2, 3) RUN ... –0.3V to 8V LTC3891E, LTC3891I .. –40°C to 125°C Maximum Current Sourced into Pin from LTC3891H .. –40°C to 150°C Source > 8V ..100μA LTC3891MP ... –55°C to 150°C SENSE+, SENSE– Voltages ... –0.3V to 28V Maximum Junction Temperature (Notes 2, 3) PLLIN/MODE, INTVCC Voltages ... –0.3V to 6V LTC3891E, LTC3891I ... 125°C ILIM, FREQ Voltages ..–0.3V to INTVCC LTC3891H, LTC3891MP .. 150°C EXTVCC .. –0.3V to 14V Storage Temperature Range .. –65°C to 150°C
PIN CONFIGURATION
TOP VIEW TOP VIEW FREQ TRACK/SS I LIM V IN TRACK/SS 1 20 ILIM 20 19 18 17 FREQ 2 19 VIN PLLIN/MODE 1 16 PGND PLLIN/MODE 3 18 PGND SGND 2 15 EXTVCC SGND 4 17 EXTVCC SGND 3 21 14 INTVCC SGND 5 21 16 INTVCC SGND RUN 4 13 BG RUN 6 SGND 15 BG SENSE– 5 12 BOOST SENSE– 7 14 BOOST SENSE+ 6 11 SW SENSE+ 8 13 SW 7 8 9 10 VFB 9 12 TG V FB ITH TG ITH 10 11 PGOOD PGOOD FE PACKAGE UDC PACKAGE 20-LEAD PLASTIC TSSOP 20-LEAD (3mm × 4mm) PLASTIC QFN TJMAX = 150°C, θJA = 38°C/W TJMAX = 150°C, θJA = 43°C/W EXPOSED PAD (PIN 21) IS SGND, MUST BE SOLDERED TO PCB EXPOSED PAD (PIN 21) IS SGND, MUST BE SOLDERED TO PCB
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3891EUDC#PBF LTC3891EUDC#TRPBF LFXV 20-Lead (3mm × 4mm) Plastic QFN –40°C to 125°C LTC3891IUDC#PBF LTC3891IUDC#TRPBF LFXV 20-Lead (3mm × 4mm) Plastic QFN –40°C to 125°C LTC3891HUDC#PBF LTC3891HUDC#TRPBF LFXV 20-Lead (3mm × 4mm) Plastic QFN –40°C to 150°C LTC3891MPUDC#PBF LTC3891MPUDC#TRPBF LFXV 20-Lead (3mm × 4mm) Plastic QFN –55°C to 150°C 3891fa 2 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions FUNCTIONAL Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts
ABSOLUTE MAXIMUM RATINGS (Note 1)
Input Supply Voltage (VIN) ... –0.3V to 65V ITH, VFB Voltages ... –0.3V to 6V Topside Driver Voltage (BOOST) ...–0.3V to 71V PGOOD Voltage .. –0.3V to 6V Switch Voltage (SW) ... –5V to 65V TRACK/SS Voltage ... –0.3V to 6V (BOOST-SW) .. –0.3V to 6V Operating Junction Temperature Range (Notes 2, 3) RUN ... –0.3V to 8V LTC3891E, LTC3891I .. –40°C to 125°C Maximum Current Sourced into Pin from LTC3891H .. –40°C to 150°C Source > 8V ..100μA LTC3891MP ... –55°C to 150°C SENSE+, SENSE– Voltages ... –0.3V to 28V Maximum Junction Temperature (Notes 2, 3) PLLIN/MODE, INTVCC Voltages ... –0.3V to 6V LTC3891E, LTC3891I ... 125°C ILIM, FREQ Voltages ..–0.3V to INTVCC LTC3891H, LTC3891MP .. 150°C EXTVCC .. –0.3V to 14V Storage Temperature Range .. –65°C to 150°C
PIN CONFIGURATION
TOP VIEW TOP VIEW FREQ TRACK/SS I LIM V IN TRACK/SS 1 20 ILIM 20 19 18 17 FREQ 2 19 VIN PLLIN/MODE 1 16 PGND PLLIN/MODE 3 18 PGND SGND 2 15 EXTVCC SGND 4 17 EXTVCC SGND 3 21 14 INTVCC SGND 5 21 16 INTVCC SGND RUN 4 13 BG RUN 6 SGND 15 BG SENSE– 5 12 BOOST SENSE– 7 14 BOOST SENSE+ 6 11 SW SENSE+ 8 13 SW 7 8 9 10 VFB 9 12 TG V FB ITH TG ITH 10 11 PGOOD PGOOD FE PACKAGE UDC PACKAGE 20-LEAD PLASTIC TSSOP 20-LEAD (3mm × 4mm) PLASTIC QFN TJMAX = 150°C, θJA = 38°C/W TJMAX = 150°C, θJA = 43°C/W EXPOSED PAD (PIN 21) IS SGND, MUST BE SOLDERED TO PCB EXPOSED PAD (PIN 21) IS SGND, MUST BE SOLDERED TO PCB
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3891EUDC#PBF LTC3891EUDC#TRPBF LFXV 20-Lead (3mm × 4mm) Plastic QFN –40°C to 125°C LTC3891IUDC#PBF LTC3891IUDC#TRPBF LFXV 20-Lead (3mm × 4mm) Plastic QFN –40°C to 125°C LTC3891HUDC#PBF LTC3891HUDC#TRPBF LFXV 20-Lead (3mm × 4mm) Plastic QFN –40°C to 150°C LTC3891MPUDC#PBF LTC3891MPUDC#TRPBF LFXV 20-Lead (3mm × 4mm) Plastic QFN –55°C to 150°C 3891fa 2 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions FUNCTIONAL Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts