lt4351 Linear Technology Corporation, lt4351 Datasheet - Page 2

• Manufacturer Part Number: lt4351
• Description: Mosfet Diode-or Controller
• Manufacturer: Linear Technology Corporation

ABSOLUTE AXI U RATI GS
LT4351
(Note 1)
V
OUT Voltage ............................................ – 0.3V to 19V
V
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
Junction Temperature (Note 2) ............................ 125 C
Storage Temperature Range ................ – 65 C to 150 C
Lead Temperature (Soldering, 10 sec).................. 300 C
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
unless otherwise specified.
SYMBOL
Supply and Protection
V
I
V
I
I
V
I
V
I
Boost Supply
V
t
I
Gate Drive
V
V
I
I
2
VIN
UV(HYST)
UV
OV
F(OFF)
OFF
SWLIM
GSO
GSK
IN
UV(TH)
OV(TH)
F(ON)
BR
IOR
GOFF
V
V
IN
DD
GL
G(MAX)
LT4351C .................................................. 0 C to 70 C
LT4351I .............................................. – 40 C to 85 C
Voltage ............................................... – 0.3V to 19V
Voltage ............................................. – 0.3V to 30V
PARAMETER
Operating Range
V
Undervoltage Turn-Off Voltage Threshold UV Falling
I
UV Input Bias Current
Overvoltage Threshold
OV Input Bias Current
FAULT Pin On Voltage
FAULT Pin Leakage Current
Boost Regulation Trip Voltage
Boost Supply Off Time
Boost Supply Switch Current Limit
Input to Output Regulated Voltage
Gate Voltage Limit
Maximum Gate Voltage
Gate Off Voltage
Gate Source Current
Gate Sink Current
UV
IN
Hysteresis
Supply Current
W
W W
CONDITIONS
V
V
Difference Between I
and V
V
OV Rising
V
I
V
Measured as V
V
Respect to V
V
Respect to V
V
V
V
U
F
IN
IN
UV
OV
F
IN
IN
OUT
OUT
OUT
= 5mA In Fault Condition
A
= 30V, V
= 1.2V, V
= 18V, V
= 5V, V
= 5V, V
= 25 C. V
= V
= V
= 5.1V
= 4.9V, V
= 4.9V, V
UV(TH)
UV(TH)
OV(TH)
The
OUT
OUT
IN
OUT
– 10mV
DD
OUT
OUT
= 4.9V
+ 10mV
– 10mV
DD
GATE
GATE
IN
= 4.9V, V
= 4.9V, V
= 17.9V, V
denotes the specifications which apply over the full operating
= 1.1V, V
to V
= V
= 9V
= 9V
UV
PACKAGE/ORDER I FOR ATIO
OUT
IN
Consult LTC Marketing for parts specified with wider operating temperature ranges.
at V
, Rising Edge
DD
DD
= 5V, V
DD
GATE
DD
GND
UV(TH)
= 13V Measured with
= 16.1V Measured with
V
SW
V
DD
= 12.3V
IN
= 29.1V
T
JMAX
10-LEAD PLASTIC MSOP
1
2
3
4
5
+ 10mV
DD
= 125 C,
MS PACKAGE
= 16.1V, V
TOP VIEW
JA
= 120 C/W
UV
10
9
8
7
6
= 0.4V, V
OUT
STATUS
FAULT
UV
OV
10.2
MIN
290
290
350
1.2
7
4
7
U
OV
MS PART MARKING
= 0.2V, GATE Open,
0.670
0.670
–100
–100
1.41
1.71
0.14
0.04
10.7
–2.3
0.16
TYP
300
300
600
450
7.4
10
15
ORDER PART
LT4351CMS
LT4351IMS
NUMBER
W
LTZZ
LTA1
–400
–400
MAX
0.25
11.1
0.30
310
310
650
2.0
2.1
7.8
–3
18
13
25
1
sn4351 4351fs
UNITS
U
mA
mA
mV
mV
mA
mV
nA
nA
ns
V
A
V
A
V
V
V
V
A
A