LT3745 Просмотр технического описания (PDF) - Linear Technology
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LT3745 Datasheet PDF : 28 Pages
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LT3745
Absolute Maximum Ratings
(Note 1)
VIN ........................................................................... 57V
CAP.......................................................... VIN – 8V to VIN
GATE...............................................................CAP to VIN
LED00 to LED15, ISP, ISN..........................................40V
ISP..................................................ISN – 1V to ISN + 1V
FB, RT, TSET, ISET........................................................ 2V
VCC................................................................–0.3V to 6V
SCKI, SCKO, SDI, SDO, LDI, LDO, PWMCK, SYNC,
SS, EN/UVLO.............................................. –0.3V to VCC
Operating Junction Temperature Range
(Notes 2, 3)
LT3745E.............................................–40°C to 125°C
LT3745I..............................................–40°C to 125°C
Storage Temperature Range...................–65°C to 125°C
Pin Configuration
TOP VIEW
40 39 38 37 36 35 34 33 32 31
EN/UVLO 1
30 SYNC
LED07 2
29 LED08
LED06 3
28 LED09
LED05 4
27 LED10
LED04 5
LED03 6
41
26 LED11
GND
25 LED12
LED02 7
24 LED13
LED01 8
23 LED14
LED00 9
22 LED15
GND 10
21 GND
11 12 13 14 15 16 17 18 19 20
UJ PACKAGE
40-LEAD (6mm × 6mm) PLASTIC QFN
TJMAX = 125°C, θJA = 34°C/W, θJC = 2.5°C/W
EXPOSED PAD (PIN 41) IS GND, MUST BE SOLDERED TO PCB
Order Information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3745EUJ#PBF
LT3745EUJ#TRPBF
3745
40-Lead (6mm × 6mm) Plastic QFN –40°C to 125°C
LT3745IUJ#PBF
LT3745IUJ#TRPBF
3745
40-Lead (6mm × 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 nonstandard 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/
3745f
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