Datasheet LT3975 (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | 42V, 2.5A, 2MHz Step-Down Switching Regulator with 2.7µA Quiescent Current |
| 页数 / 页 | 24 / 2 — ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION … |
| 文件格式/大小 | PDF / 295 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
LT3975
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
V TOP VIEW IN, EN Voltage (Note 3) ...42V BOOST Pin Voltage ...55V FB 1 16 SYNC SS 2 15 PG BOOST Pin Above SW Pin ...30V OUT 3 14 RT BOOST 4 17 13 EN FB, RT, SYNC, SS Voltage ...6V SW 5 GND 12 VIN SW 6 11 VIN PG Voltage ..30V SW 7 10 VIN NC 8 9 NC OUT Voltage ..16V MSE PACKAGE Operating Junction Temperature Range (Note 2) 16-LEAD PLASTIC MSOP LT3975E ... –40°C to 125°C θJA = 40°C/W EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB LT3975I.. –40°C to 125°C LT3975H .. –40°C to 150°C Storage Temperature Range .. –65°C to 150°C Lead Temperature (Soldering, 10 sec) ...300°C
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3975EMSE#PBF LT3975EMSE#TRPBF 3975 16-Lead Plastic MSOP –40°C to 125°C LT3975IMSE#PBF LT3975IMSE#TRPBF 3975 16-Lead Plastic MSOP –40°C to 125°C LT3975HMSE#PBF LT3975HMSE#TRPBF 3975 16-Lead Plastic MSOP –40°C to 150°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. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage (Note 3) l 4 4.3 V Dropout Comparator Threshold (VIN – OUT) Falling 430 500 570 mV Dropout Comparator Threshold Hysteresis 25 mV Quiescent Current from VIN VEN Low 0.7 1.3 µA VEN High, VSYNC Low 1.6 2.7 µA VEN High, VSYNC Low l 30 µA FB Pin Current VFB = 1.5V l 0.1 12 nA Feedback Voltage 1.183 1.197 1.212 V l 1.173 1.197 1.222 V FB Voltage Line Regulation 4.3V < VIN < 40V (Note 3) 0.0003 0.01 %/V Switching Frequency RT = 11.8k 1.8 2.25 2.7 MHz RT = 41.2k 0.8 1 1.2 MHz RT = 294k 160 200 240 kHz Minimum Switch On-Time 105 ns Minimum Switch Off-Time (Note 4) 150 200 ns 3975f 2 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM OPERATION APPLICATIONS INFORMATION TYPICAL APPLICATIONS PACKAGE DESCRIPTION TYPICAL APPLICATION RELATED PARTS
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
V TOP VIEW IN, EN Voltage (Note 3) ...42V BOOST Pin Voltage ...55V FB 1 16 SYNC SS 2 15 PG BOOST Pin Above SW Pin ...30V OUT 3 14 RT BOOST 4 17 13 EN FB, RT, SYNC, SS Voltage ...6V SW 5 GND 12 VIN SW 6 11 VIN PG Voltage ..30V SW 7 10 VIN NC 8 9 NC OUT Voltage ..16V MSE PACKAGE Operating Junction Temperature Range (Note 2) 16-LEAD PLASTIC MSOP LT3975E ... –40°C to 125°C θJA = 40°C/W EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB LT3975I.. –40°C to 125°C LT3975H .. –40°C to 150°C Storage Temperature Range .. –65°C to 150°C Lead Temperature (Soldering, 10 sec) ...300°C
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3975EMSE#PBF LT3975EMSE#TRPBF 3975 16-Lead Plastic MSOP –40°C to 125°C LT3975IMSE#PBF LT3975IMSE#TRPBF 3975 16-Lead Plastic MSOP –40°C to 125°C LT3975HMSE#PBF LT3975HMSE#TRPBF 3975 16-Lead Plastic MSOP –40°C to 150°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. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage (Note 3) l 4 4.3 V Dropout Comparator Threshold (VIN – OUT) Falling 430 500 570 mV Dropout Comparator Threshold Hysteresis 25 mV Quiescent Current from VIN VEN Low 0.7 1.3 µA VEN High, VSYNC Low 1.6 2.7 µA VEN High, VSYNC Low l 30 µA FB Pin Current VFB = 1.5V l 0.1 12 nA Feedback Voltage 1.183 1.197 1.212 V l 1.173 1.197 1.222 V FB Voltage Line Regulation 4.3V < VIN < 40V (Note 3) 0.0003 0.01 %/V Switching Frequency RT = 11.8k 1.8 2.25 2.7 MHz RT = 41.2k 0.8 1 1.2 MHz RT = 294k 160 200 240 kHz Minimum Switch On-Time 105 ns Minimum Switch Off-Time (Note 4) 150 200 ns 3975f 2 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM OPERATION APPLICATIONS INFORMATION TYPICAL APPLICATIONS PACKAGE DESCRIPTION TYPICAL APPLICATION RELATED PARTS