Datasheet
LT3976
2
3976f
For more information www.linear.com/3976
absoluTe MaxiMuM raTings
V
IN
, EN Voltage (Note 3) ...........................................40V
BOOST Pin Voltage ...................................................55V
BOOST Pin Above SW Pin ......................................... 30V
FB, RT, SYNC, SS Voltage ...........................................6V
PG Voltage ................................................................30V
OUT Voltage .............................................................. 16V
(Note 1)
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3976EMSE#PBF LT3976EMSE#TRPBF 3976 16-Lead Plastic MSOP –40°C to 125°C
LT3976IMSE#PBF LT3976IMSE#TRPBF 3976 16-Lead Plastic MSOP –40°C to 125°C
LT3976HMSE#PBF LT3976HMSE#TRPBF 3976 16-Lead Plastic MSOP –40°C to 150°C
LT3976EUDD#PBF LT3976EUDD#TRPBF LGHV 24-Lead (3mm × 5mm) Plastic QFN –40°C to 125°C
LT3976IUDD#PBF LT3976IUDD#TRPBF LGHV 24-Lead (3mm × 5mm) 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/
1
2
3
4
5
6
7
8
FB
SS
OUT
BOOST
SW
SW
SW
NC
16
15
14
13
12
11
10
9
SYNC
PG
RT
EN
V
IN
V
IN
V
IN
NC
TOP VIEW
17
GND
MSE PACKAGE
16-LEAD PLASTIC MSOP
θ
JA
= 40°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
24 23 22 21
9 10
TOP VIEW
25
GND
UDD PACKAGE
24-LEAD (3mm × 5mm) PLASTIC QFN
11 12
6
5
4
3
2
1
15
16
17
18
19
20
SS
OUT
NC
BST
NC
SW
SW
SW
SYNC
PG
RT
NC
EN
VIN
VIN
VIN
FB
FB
NC
GND
NC
NC
NC
NC
14
7
13
8
θ
JA
= 46°C/W
EXPOSED PAD (PIN 25) IS GND, MUST BE SOLDERED TO PCB
pin conFiguraTion
Operating Junction Temperature Range (Note 2)
LT3976E ............................................. –40°C to 125°C
LT3976I ............................................. –40°C to 125°C
LT3976H ............................................ –40°C to 150°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................... 300°C