LT3952E/LT3952I .............................. –40°C to 125°C
LT3952H ............................................ –40°C to 150°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................... 300°C
INTV
CC
10
SYNC/SPRD 11
GND 12
VC 13
RT 14
FE PACKAGE
28-LEAD PLASTIC TSSOP
θ
JA
= 30°C/W
EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LT3952EFE#PBF
LT3952IFE#PBF
LT3952HFE#PBF
TAPE AND REEL
LT3952EFE#TRPBF
LT3952IFE#TRPBF
LT3952HFE#TRPBF
PART MARKING*
LT3952FE
LT3952FE
LT3952FE
PACKAGE DESCRIPTION
28-Lead Plastic TSSOP
28-Lead Plastic TSSOP
28-Lead Plastic TSSOP
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.
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/.
Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix
2
3952fb
For more information
www.linear.com/LT3952
LT3952
ELECTRICAL CHARACTERISTICS
PARAMETER
Minimum Operating Voltage
Supply Current
FB = 1.3V, R
T
= 40.2k, CTRL = 0V
EN/UVLO = 0V, CTRL = 0V
EN/UVLO = 1.15V, CTRL = 0V
CTRL = 0V
V
IN
= 3V, CTRL = 0V
INTV
CC
Rising, CTRL = 0V
CTRL = 0V
I
VREF
= –100 A , CTRL = 0V
3V < V
IN
< 42V , CTRL = 0V
0µA < I
VREF
< –100µA , CTRL = 0V
0.2
CTRL Falling
100
12.5
200
CTRL = 0V, Current Out of Pin
CTRL = 1.5V
ISP = 60V, CTRL = 1.5V
ISP = 60V, CTRL = 0.7V
ISP = 60V, CTRL = 0.3V
ISP = 0V, CTRL = 1.5V
CTRL = 1.5V
PWM = 5V (Active), ISP = 60V
PWM = 0V (Standby), ISP = 60V
CTRL = 0.4V, 0.8V
CTRL = 1.5V , ISP = 60V
IVINP = IVINN = 42V
l
l
l
l
l
The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
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