Datasheet

LT4351
2
4351fd
PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS
V
IN
Voltage ................................................ –0.3V to 19V
OUT Voltage
............................................. –0.3V to 19V
V
DD
Voltage .............................................. –0.3V to 30V
FAULT, STATUS Voltages
.......................... –0.3V to 30V
FAULT, STATUS Current
.......................................... 8mA
UV, OV Voltages
......................................... –0.3V to 9V
SW Voltage
.............................................. –0.3V to 32V
Operating Temperature Range
LT4351C .................................................. 0°C to 70°C
LT4351I ............................................... –40°C to 85°C
Junction Temperature (Note 2)
............................ 125°C
Storage Temperature Range
.................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
.................. 300°C
(Note 1)
1
2
3
4
5
GATE
V
DD
V
IN
SW
GND
10
9
8
7
6
OUT
STATUS
FAULT
UV
OV
TOP VIEW
MS PACKAGE
10-LEAD PLASTIC MSOP
T
JMAX
= 125°C, θ
JA
= 120°C/W
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT4351CMS#PBF LT4351CMS#TRPBF LTZZ 10-Lead Plastic MSOP 0°C to 70°C
LT4351IMS#PBF LT4351IMS#TRPBF LTA 1 10-Lead Plastic MSOP –40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Supply and Protection
V
IN
Operating Range
l
1.2 18 V
I
VIN
V
IN
Supply Current V
IN
= 1.2V, V
OUT
= 1.1V, V
DD
= 12.3V
V
IN
= 18V, V
OUT
= 17.9V, V
DD
= 29.1V
l
l
1.41
1.71
2
2.1
mA
mA
V
UV(TH)
Undervoltage Turn-Off Voltage
Threshold
UV Falling
l
290 300 310 mV
I
UV(HYST)
I
UV
Hysteresis Difference Between I
UV
at V
UV(TH)
+ 10mV and
V
UV(TH)
– 10mV
l
7 10 13 µA
I
UV
UV Input Bias Current V
UV
= V
UV(TH)
+ 10mV
l
–100 –400 nA
V
OV(TH)
Overvoltage Threshold OV Rising
l
290 300 310 mV
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= V
OUT
= 5V, V
DD
= 16.1V, V
UV
= 0.4V, V
OV
= 0.2V, GATE Open, unless
otherwise specified.