LT3645 データシートの表示（PDF） - Linear Technology
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LT3645 Datasheet PDF : 24 Pages
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LT3645
ABSOLUTE MAXIMUM RATINGS
(Note 1)
VIN, EN/UVLO (Note 5).......................…….–0.3V to 55V
BOOST Voltage……………………………………….55V
BOOST Above SW Voltage ............................... …….25V
VCC2 Voltage .............................................. –0.3V to 16V
VOUT2 Voltage .............................................. –0.3V to 8V
FB, FB2 Voltages .......................................... –0.3V to 6V
EN2, NPG Voltages .................................... –0.3V to 16V
Operating Junction Temperature Range (Note 2)
LT3645E ............................................ –40°C to 125°C
LT3645I ............................................. –40°C to 125°C
LT3645H............................................ –40°C to 150°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)…… ........... 300°C
PIN CONFIGURATION
TOP VIEW
16 15 14 13
NC 1
12 NC
NC 2
NPG 3
17
11 VIN
GND
10 BOOST
EN2 4
9 SW
5678
UD PACKAGE
16-LEAD (3mm × 3mm) PLASTIC QFN
θJA = 58.7°C/W, θJC = 7.1°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
TOP VIEW
EN/UVLO 1
12 NPG
FB 2
11 EN2
GND 3
13
10 FB2
DA 4
GND
9 OUT2
BOOST 5
SW 6
8 VCC2
7 VIN
MSE PACKAGE
12-LEAD PLASTIC MSOP
θJA = 40°C/W, θJC = 5°C/W TO 10°C/W
EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3645EUD#PBF
LT3645EUD#TRPBF
LFVS
16-Lead Plastic QFN
–40°C to 125°C
LT3645IUD#PBF
LT3645IUD#TRPBF
LFVS
16-Lead Plastic QFN
–40°C to 125°C
LT3645EMSE#PBF
LT3645EMSE#TRPBF 3645
12-Lead Plastic MSOP
–40°C to 125°C
LT3645IMSE#PBF
LT3645IMSE#TRPBF
3645
12-Lead Plastic MSOP
–40°C to 125°C
LT3645HMSE#PBF
LT3645HMSE#TRPBF 3645
12-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/
3645f
2
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