LT3975
ABSOLUTE MAXIMUM RATINGS
(Note 1)
PIN CONFIGURATION
TOP VIEW
FB
SS
OUT
BOOST
SW
SW
SW
NC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SYNC
PG
RT
EN
V
IN
V
IN
V
IN
NC
V
IN
, EN Voltage (Note 3) ...........................................42V
BOOST Pin Voltage ...................................................55V
BOOST Pin Above SW Pin.........................................30V
FB, RT, SYNC, SS Voltage ...........................................6V
PG Voltage ................................................................30V
OUT Voltage ..............................................................16V
Operating Junction Temperature Range (Note 2)
LT3975E............................................. –40°C to 125°C
LT3975I.............................................. –40°C to 125°C
LT3975H ............................................ –40°C to 150°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................... 300°C
17
GND
MSE PACKAGE
16-LEAD PLASTIC MSOP
θ
JA
= 40°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LT3975EMSE#PBF
LT3975IMSE#PBF
LT3975HMSE#PBF
TAPE AND REEL
LT3975EMSE#TRPBF
LT3975IMSE#TRPBF
LT3975HMSE#TRPBF
PART MARKING*
3975
3975
3975
PACKAGE DESCRIPTION
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–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/
ELECTRICAL CHARACTERISTICS
PARAMETER
Minimum Input Voltage
Dropout Comparator Threshold
Dropout Comparator Threshold Hysteresis
Quiescent Current from V
IN
FB Pin Current
Feedback Voltage
FB Voltage Line Regulation
Switching Frequency
Minimum Switch On-Time
Minimum Switch Off-Time (Note 4)
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 2)
CONDITIONS
(Note 3)
(V
IN
– OUT) Falling
V
EN
Low
V
EN
High, V
SYNC
Low
V
EN
High, V
SYNC
Low
V
FB
= 1.5V
MIN
l
430
TYP
4
500
25
0.7
1.6
0.1
1.197
1.197
0.0003
2.25
1
200
105
150
MAX
4.3
570
1.3
2.7
30
12
1.212
1.222
0.01
2.7
1.2
240
200
l
l
l
1.183
1.173
1.8
0.8
160
4.3V < V
IN
< 40V (Note 3)
R
T
= 11.8k
R
T
= 41.2k
R
T
= 294k
UNITS
V
mV
mV
µA
µA
µA
nA
V
V
%/V
MHz
MHz
kHz
ns
ns
3975f
2
LINER [ LINEAR TECHNOLOGY ]
