Datasheet
LT3514
2
3514fa
For more information www.linear.com/LT3514
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
EN/UVLO ................................................................... 40V
EN/UVLO Pin Above V
IN
.............................................. 5V
V
IN
............................................................................40V
SKY ........................................................................... 46V
SW5 ..........................................................................47V
RUN/SS .......................................................................6V
FB ...............................................................................6V
RT/SYNC .....................................................................6V
(Note 1)
9 10
TOP VIEW
UFD PACKAGE
28-LEAD (4mm × 5mm) PLASTIC QFN
29
GND
11 12 13
28 27 26 25 24
14
23
6
5
4
3
2
1
NC
NC
DA3
SW3
SW1
DA1
SW4
DA4
NC
FB3
FB1
FB4
GND
RT/SYNC
EN/UVLO
RUN/SS3
V
IN
GND
V
IN
SKY
SW5
PG
V
IN
GND
V
IN
RUN/SS4
RUN/SS1
NC
7
17
18
19
20
21
22
16
8
15
θ
JA
= 43°C/W
EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
1
2
3
4
5
6
7
8
9
10
11
12
TOP VIEW
FE PACKAGE
24-LEAD PLASTIC TSSOP
24
23
22
21
20
19
18
17
16
15
14
13
V
IN
NC
DA3
SW3
SW3
SW1
DA1
SW4
DA4
NC
V
IN
V
IN
SKY
SW5
GND
PG
FB3
FB1
FB4
RT/SYNC
EN/UVLO
RUN/SS3
RUN/SS1
RUN/SS4
25
GND
θ
JA
= 33°C/W
EXPOSED PAD (PIN 25) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3514EUFD#PBF LT3514EUFD#TRPBF 3514
28-Lead (4mm × 5mm) Plastic QFN
–40°C to 125°C
LT3514IUFD#PBF LT3514IUFD#TRPBF 3514
28-Lead (4mm × 5mm) Plastic QFN
–40°C to 125°C
LT3514EFE#PBF LT3514EFE#TRPBF LT3514FE 24-Lead Plastic TSSOP –40°C to 125°C
LT3514IFE#PBF LT3514IFE#TRPBF LT3514FE 24-Lead Plastic TSSOP –40°C to 125°C
LT3514HFE#PBF LT3514HFE#TRPBF LT3514FE 24-Lead Plastic TSSOP –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/
PG .............................................................................25V
Operating Junction Temperature Range (Notes 2, 7)
LT3514EUFD ...................................... –40°C to 125°C
LT3514IUFD ....................................... –40°C to 125°C
LT3514EFE ......................................... –40°C to 125°C
LT3514IFE .......................................... –40°C to 125°C
LT3514HFE ......................................... –40°C to 150°C
Storage Temperature Range .................. –65°C to 150°C