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LT8640 データシート(PDF) 2 Page - Linear Technology |
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LT8640 データシート(HTML) 2 Page - Linear Technology |
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2 / 26 page  LT8640 2 8640f For more information www.linear.com/LT8640 PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS VIN, EN/UV, PG..........................................................42V BIAS..........................................................................25V FB, TR/SS . .................................................................4V SYNC Voltage .............................................................6V Operating Junction Temperature Range (Note 2) LT8640E ............................................ –40°C to 125°C LT8640I ............................................. –40°C to 125°C LT8640H............................................ –40°C to 150°C Storage Temperature Range ......................–65 to 150°C (Note 1) ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT8640EUDC#PBF LT8640EUDC#TRPBF LGNJ 18-Lead (3mm × 4mm) Plastic QFN –40°C to 125°C LT8640IUDC#PBF LT8640IUDC#TRPBF LGNJ 18-Lead (3mm × 4mm) Plastic QFN –40°C to 125°C LT8640HUDC#PBF LT8640HUDC#TRPBF LGNJ 18-Lead (3mm × 4mm) Plastic QFN –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/ PARAMETER CONDITIONS MIN TYP MAX UNITS Minimum Input Voltage l 2.9 3.4 V VIN Quiescent Current VEN/UV = 0V l 0.75 0.75 3 10 µA µA VEN/UV = 2V, Not Switching, VSYNC = 0V l 1.7 1.7 4 10 µA µA VEN/UV = 2V, Not Switching, VSYNC = 2V 0.3 0.5 mA VIN Current in Regulation VOUT = 0.97V, VIN = 6V, Output Load = 100µA VOUT = 0.97V, VIN = 6V, Output Load = 1mA l l 21 220 50 350 µA µA Feedback Reference Voltage VIN = 6V, ILOAD = 0.5A VIN = 6V, ILOAD = 0.5A l 0.964 0.958 0.970 0.970 0.976 0.982 V V Feedback Voltage Line Regulation VIN = 4.0V to 42V, ILOAD = 0.5A l 0.004 0.02 %/V 20 19 18 17 7 8 9 10 TOP VIEW UDC PACKAGE 18-LEAD (3mm × 4mm) PLASTIC QFN 1 BIAS INTVCC BST VIN1 GND1 TR/SS RT EN/UV VIN2 GND2 16 15 14 13 11 2 3 4 6 21 SW 22 SW θJA = 40°C/W, θJC(PAD) = 12°C/W EXPOSED PAD (PINS 21, 22) ARE SW, SHOULD BE SOLDERED TO PCB NOTE: PINS 5 AND 12 ARE REMOVED. CONFIGURATION DOES NOT MATCH JEDEC 20-LEAD PACKAGE OUTLINE |
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