Datasheet LTC3878 (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | Fast, Wide Operating Range No RSENSE Step-Down DC/DC Controller |
| 页数 / 页 | 26 / 2 — (Note 1). LEAD FREE FINISH. TAPE AND REEL. PART MARKING*. … |
| 文件格式/大小 | PDF / 413 Kb |
| 文件语言 | 英语 |
(Note 1). LEAD FREE FINISH. TAPE AND REEL. PART MARKING*. PACKAGE DESCRIPTION. TEMPERATURE RANGE. The
该数据表的模型线
文件文字版本
LTC3878 absoluTe MaxiMuM raTings pin conFiguraTion
(Note 1)
Input Supply Voltage (VIN) ... –0.3V to 40V TOP VIEW ION Voltage ... –0.3V to 40V RUN/SS 1 16 BOOST BOOST Voltage .. –0.3V to 46V PGOOD 2 15 TG SW Voltage ... –5V to 40V VRNG 3 14 SW INTVCC, (BOOST-SW), RUN/SS, FCB 4 13 PGND PGOOD Voltages .. –0.3V to 6V ITH 5 12 BG FCB, V SGND 6 11 INTV RNG Voltages .. –0.3V to INTVCC + 0.3V CC V ION 7 10 V FB, ITH Voltages ... –0.3V to 2.7V IN Operating Temperature Range (Note 4).. –40°C to 85°C VFB 8 9 NC Junction Temperature (Note 2) ... 125°C GN PACKAGE 16-LEAD PLASTIC SSOP NARROW Storage Temperature Range ... –65°C to 150°C T Lead Temperature (Soldering, 10 sec) .. 300°C JMAX = 125°C, θJA = 110°C/W orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3878EGN#PBF LTC3878EGN#TRPBF 3878 16-Lead Plastic SSOP –40°C to 85°C (Note 4) LTC3878IGN#PBF LTC3878IGN#TRPBF 3878 16-Lead Plastic SSOP –40°C to 85°C (Note 4) 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/ e
lecTrical characTerisTics
The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 15V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loop
Input Operating Voltage Range 4 38 V IQ Input DC Supply Current Normal 1500 2000 µA Shutdown Supply Current 18 35 µA VFBREF Feedback Reference Voltage ITH = 1.2V (Note 3) l 0.792 0.8 0.808 V Feedback Voltage Line Regulation VIN = 4V to 38V, ITH = 1.2V (Note 3) 0.002 %/V Feedback Voltage Load Regulation ITH = 0.5V to 1.9V (Note 3) l –0.05 –0.3 % IFB Feedback Input Current VFB = 0.8V –5 ±50 nA gm(EA) Error Amplifier Transconductance ITH = 1.2V (Note 3) 1.4 1.7 2 mS VFCB FCB Threshold 0.76 0.8 0.84 V FCB Pin Current VFCB = 0.8V 0 ±1 µA tON On-Time ION = 30µA 198 233 268 ns ION = 15µA 396 466 536 ns tON(MIN) Minimum On-Time ION = 180µA 43 75 ns 3878fa Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration order information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
(Note 1)
Input Supply Voltage (VIN) ... –0.3V to 40V TOP VIEW ION Voltage ... –0.3V to 40V RUN/SS 1 16 BOOST BOOST Voltage .. –0.3V to 46V PGOOD 2 15 TG SW Voltage ... –5V to 40V VRNG 3 14 SW INTVCC, (BOOST-SW), RUN/SS, FCB 4 13 PGND PGOOD Voltages .. –0.3V to 6V ITH 5 12 BG FCB, V SGND 6 11 INTV RNG Voltages .. –0.3V to INTVCC + 0.3V CC V ION 7 10 V FB, ITH Voltages ... –0.3V to 2.7V IN Operating Temperature Range (Note 4).. –40°C to 85°C VFB 8 9 NC Junction Temperature (Note 2) ... 125°C GN PACKAGE 16-LEAD PLASTIC SSOP NARROW Storage Temperature Range ... –65°C to 150°C T Lead Temperature (Soldering, 10 sec) .. 300°C JMAX = 125°C, θJA = 110°C/W orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3878EGN#PBF LTC3878EGN#TRPBF 3878 16-Lead Plastic SSOP –40°C to 85°C (Note 4) LTC3878IGN#PBF LTC3878IGN#TRPBF 3878 16-Lead Plastic SSOP –40°C to 85°C (Note 4) 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/ e
lecTrical characTerisTics
The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 15V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loop
Input Operating Voltage Range 4 38 V IQ Input DC Supply Current Normal 1500 2000 µA Shutdown Supply Current 18 35 µA VFBREF Feedback Reference Voltage ITH = 1.2V (Note 3) l 0.792 0.8 0.808 V Feedback Voltage Line Regulation VIN = 4V to 38V, ITH = 1.2V (Note 3) 0.002 %/V Feedback Voltage Load Regulation ITH = 0.5V to 1.9V (Note 3) l –0.05 –0.3 % IFB Feedback Input Current VFB = 0.8V –5 ±50 nA gm(EA) Error Amplifier Transconductance ITH = 1.2V (Note 3) 1.4 1.7 2 mS VFCB FCB Threshold 0.76 0.8 0.84 V FCB Pin Current VFCB = 0.8V 0 ±1 µA tON On-Time ION = 30µA 198 233 268 ns ION = 15µA 396 466 536 ns tON(MIN) Minimum On-Time ION = 180µA 43 75 ns 3878fa Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration order information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts