LT3791-1 Просмотр технического описания (PDF) - Linear Technology
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LT3791-1 Datasheet PDF : 26 Pages
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LT3791-1
Absolute Maximum Ratings
(Note 1)
Supply Voltages
Input Supply (VIN)......................................................60V
SW1, SW2.......................................................–1V to 60V
C/10, SHORT..............................................................15V
EN/UVLO, IVINP, IVINN, ISP, ISN...............................60V
INTVCC, (BST1-SW1), (BST2-SW2)..............................6V
CCM, SYNC, RT, CTRL, OVLO, PWM...........................6V
IVINMON, ISMON, FB, SS, VC, VREF............................6V
IVINP-IVINN, ISP-ISN, SNSP-SNSN........................±0.5V
SNSP, SNSN............................................................±0.3V
Operating Junction Temperature (Notes 2, 3)
LT3791E-1/LT3791I-1.......................... –40°C to 125°C
LT3791H-1.......................................... –40°C to 150°C
LT3791MP-1....................................... –55°C to 150°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................... 300°C
Pin Configuration
CTRL 1
SS 2
PWM 3
C/10 4
SHORT 5
VREF 6
ISMON 7
IVINMON 8
EN/UVLO 9
IVINP 10
IVINN 11
VIN 12
INTVCC 13
TG1 14
BST1 15
SW1 16
PGND 17
BG1 18
BG2 19
TOP VIEW
39
SGND
38 OVLO
37 FB
36 VC
35 RT
34 SYNC
33 CLKOUT
32 CCM
31 PWMOUT
30 SGND
29 TEST1
28 SNSN
27 SNSP
26 ISN
25 ISP
24 TG2
23 NC
22 BST2
21 SW2
20 PGND
FE PACKAGE
38-LEAD PLASTIC TSSOP
TJMAX = 150°C, θJA = 28°C/W
EXPOSED PAD (PIN 39) IS SGND, MUST BE SOLDERED TO PCB
Order Information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3791EFE-1#PBF
LT3791EFE-1#TRPBF LT3791FE-1
38-Lead Plastic TSSOP
–40°C to 125°C
LT3791IFE-1#PBF
LT3791IFE-1#TRPBF
LT3791FE-1
38-Lead Plastic TSSOP
–40°C to 125°C
LT3791HFE-1#PBF
LT3791HFE-1#TRPBF LT3791FE-1
38-Lead Plastic TSSOP
–40°C to 150°C
LT3791MPFE-1#PBF
LT3791MPFE-1#TRPBF LT3791FE-1
38-Lead Plastic TSSOP
–55°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.
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
junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = 12V, VEN/UVLO = 12V unless otherwise noted.
PARAMETER
Input
VIN Operating Voltage
VIN Shutdown IQ
VIN Operating IQ (Not Switching)
CONDITIONS
VEN/UVLO = 0V
FB = 1.3V, RT = 59.0k
MIN
TYP
MAX
4.7
60
0.1
1
3.0
4
UNITS
V
µA
mA
37911fa
2
For more information www.linear.com/LT3791-1
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