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LT3492
ABSOLUTE MAXIMUM RATINGS
(Note 1)
V IN (Note 4) ...............................................................40V
SW1-SW3, ISN1-ISN3, ISP1-ISP3 ............................60V
TG1-TG3 ...............................................ISP – 10V to ISP
PWM1-PWM3 ...........................................................20V
V REF , CTRL1-CTRL3, FADJ, V C1 -V C3 , OVP1-OVP3....2.5V
SHDN (Note 4) ...........................................................V IN
PIN CONFIGURATION
TOP VIEW
Operating Junction Temperature Range
(Note 2).................................................. –40°C to 125°C
Max Junction Temperature.................................... 125°C
Storage Temperature Range
TSSOP ............................................... –65°C to 150°C
UFD.................................................... –65°C to 125°C
SHDN
PWM3
PWM2
1
2
3
28 V IN
27 TG3
26 ISN3
TOP VIEW
28 27 26 25 24 23
PWM1
V REF
CTRL3
4
5
6
25 ISP3
24 SW3
23 SW2
PWM1 1
V REF 2
CTRL3 3
22 ISP3
21 SW3
20 SW2
CTRL2
CTRL1
FADJ
7
8
9
GND
29
22 ISP2
21 ISN2
20 TG2
CTRL2 4
CTRL1 5
FADJ 6
GND
29
19 ISP2
18 ISN2
17 TG2
V C3 10
V C2 11
V C1 12
OVP3 13
OVP2 14
19 SW1
18 ISP1
17 ISN1
16 TG1
15 OVP1
V C3 7
V C2 8
9 10 11 12 13 14
UFD PACKAGE
16 SW1
15 ISP1
28-LEAD (4mm
5mm) PLASTIC QFN
FE PACKAGE
28-LEAD PLASTIC TSSOP
T JMAX = 125°C, θ JA = 30°C/W, θ JC = 10°C/W
EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
T JMAX = 125°C, θ JA = 34°C/W, θ JC = 2.7°C/W
EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
LEAD FREE FINISH
LT3492EFE#PBF
LT3492IFE#PBF
LT3492EUFD#PBF
LT3492IUFD#PBF
TAPE AND REEL
LT3492EFE#TRPBF
LT3492IFE#TRPBF
LT3492EUFD#TRPBF
LT3492IUFD#TRPBF
PART MARKING*
LT3492FE
LT3492FE
3492
3492
PACKAGE DESCRIPTION
28-Lead Plastic TSSOP
28-Lead Plastic TSSOP
28-Lead (4mm × 5mm) Plastic QFN
28-Lead (4mm × 5mm) Plastic QFN
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
Consult LTC Marketing for parts speci?ed with wider operating temperature ranges. *The temperature grade is identi?ed by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based ?nish parts.
*For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel speci?cations, go to: http://www.linear.com/tapeandreel/
3492fa
2
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