LT3954IUHE Ver la hoja de datos (PDF) - Linear Technology
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LT3954IUHE Datasheet PDF : 26 Pages
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LT3954
ABSOLUTE MAXIMUM RATINGS
(Note 1)
VIN, EN/UVLO.............................................................40V
ISP, ISN, SW..............................................................40V
INTVCC....................................................VIN + 0.3V, 9.6V
PWMOUT............................................................ (Note 2)
CTRL, VMODE............................................................15V
FB, PWM, SYNC........................................................9.6V
VC, VREF.......................................................................3V
RT, DIM/SS...............................................................1.5V
PGND, GNDK to GND..............................................±0.5V
Operating Ambient Temperature Range
(Notes 3, 4)............................................. –40°C to 125°C
Maximum Junction Temperature........................... 125°C
Storage Temperature Range................... –65°C to 150°C
PIN CONFIGURATION
TOP VIEW
36 35 34 33 32 31 30
SYNC 1
EN/UVLO 2
INTVCC 3
37
GND 4
GND
VIN 6
SW 8
SW 9
NC 10
38
SW
12 13 14 15 16 17
28 ISP
27 ISN
25 FB
24 GND
23 PWMOUT
21 SW
20 SW
UHE PACKAGE
36-LEAD (5mm × 6mm) PLASTIC QFN
θJA = 34°C/W, θJC = 3°C/W
EXPOSED PAD (PIN 37) IS GND, MUST BE SOLDERED TO GND PLANE
EXPOSED PAD (PIN 38) IS SW, MUST BE SOLDERED TO SW PLANE
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3954EUHE#PBF
LT3954EUHE#TRPBF
3954
36-Lead (5mm × 6mm) Plastic QFN –40°C to 125°C
LT3954IUHE#PBF
LT3954IUHE#TRPBF
3954
36-Lead (5mm × 6mm) Plastic QFN –40°C to 125°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/
3954fa
2
For more information www.linear.com/3954
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