LT4356C-3 ............................................... 0°C to 70°C
LT4356I-3 ............................................ –40°C to 85°C
LT4356H-3 ......................................... –40°C to 125°C
LT4356MP-3 ...................................... –55°C to 125°C
Storage Temperature Range
DE12 .................................................. –65°C to 125°C
MS, SO .............................................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
MS, SO ............................................................. 300°C
pin conFigurAtion
TOP VIEW
TMR
FB
OUT
GATE
SNS
V
CC
1
2
3
4
5
6
13
12 IN
+
11 A
OUT
10 GND
9
8
7
EN
FLT
SHDN
TOP VIEW
FB
OUT
GATE
SNS
V
CC
1
2
3
4
5
10
9
8
7
6
TMR
GND
EN
FLT
SHDN
TMR 1
FB 2
NC 3
OUT 4
GATE 5
NC 6
SNS 7
V
CC
8
TOP VIEW
16 IN
+
15 NC
14 A
OUT
13 NC
12 GND
11 EN
10
FLT
9
SHDN
DE PACKAGE
12-LEAD (4mm
×
3mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 43°C/W
EXPOSED PAD (PIN 13) PCB GND CONNECTION OPTIONAL
MS PACKAGE
10-LEAD PLASTIC MSOP
T
JMAX
= 125°C,
θ
JA
= 160°C/W
S PACKAGE
16-LEAD PLASTIC SO
T
JMAX
= 150°C,
θ
JA
= 100°C/W
orDer inFormAtion
LEAD FREE FINISH
LT4356CDE-3#PBF
LT4356IDE-3#PBF
LT4356HDE-3#PBF
LT4356CMS-3#PBF
LT4356IMS-3#PBF
LT4356HMS-3#PBF
LT4356MPMS-3#PBF
LT4356CS-3#PBF
LT4356IS-3#PBF
LT4356HS-3#PBF
LT4356MPS-3#PBF
LEAD BASED FINISH
LT4356CDE-3
LT4356IDE-3
LT4356HDE-3
TAPE AND REEL
LT4356CDE-3#TRPBF
LT4356IDE-3#TRPBF
LT4356HDE-3#TRPBF
LT4356CMS-3#TRPBF
LT4356IMS-3#TRPBF
LT4356HMS-3#TRPBF
http://www.linear.com/product/LT4356-3#orderinfo
PART MARKING*
43563
43563
43563
LTFFK
LTFFK
LTFFK
LTGGZ
LT4356S-3
LT4356S-3
LT4356S-3
LT4356MPS-3
PART MARKING*
43563
43563
43563
PACKAGE DESCRIPTION
12-Lead (4mm × 3mm) Plastic DFN
12-Lead (4mm × 3mm) Plastic DFN
12-Lead (4mm × 3mm) Plastic DFN
10-Lead Plastic MSOP
10-Lead Plastic MSOP
10-Lead Plastic MSOP
10-Lead Plastic MSOP
16-Lead Plastic SO
16-Lead Plastic SO
16-Lead Plastic SO
16-Lead Plastic SO
PACKAGE DESCRIPTION
12-Lead (4mm × 3mm) Plastic DFN
12-Lead (4mm × 3mm) Plastic DFN
12-Lead (4mm × 3mm) Plastic DFN
TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
–55°C to 125°C
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
–55°C to 125°C
TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
43563fc
LT4356MPMS-3#TRPBF
LT4356CS-3#TRPBF
LT4356IS-3#TRPBF
LT4356HS-3#TRPBF
LT4356MPS-3#TRPBF
TAPE AND REEL
LT4356CDE-3#TR
LT4356IDE-3#TR
LT4356HDE-3#TR
2
For more information
www.linear.com/LT4356-3
LT4356-3
orDer inFormAtion
LEAD BASED FINISH
LT4356CMS-3
LT4356IMS-3
LT4356HMS-3
LT4356MPMS-3
LT4356CS-3
LT4356IS-3
LT4356HS-3
LT4356MPS-3
TAPE AND REEL
LT4356CMS-3#TR
LT4356IMS-3#TR
LT4356HMS-3#TR
LT4356MPMS-3#TR
LT4356CS-3#TR
LT4356IS-3#TR
LT4356HS-3#TR
LT4356MPS-3#TR
PART MARKING*
LTFFK
LTFFK
LTFFK
LTGGZ
LT4356S-3
LT4356S-3
LT4356S-3
LT4356MPS-3
PACKAGE DESCRIPTION
10-Lead Plastic MSOP
10-Lead Plastic MSOP
10-Lead Plastic MSOP
10-Lead Plastic MSOP
16-Lead Plastic SO
16-Lead Plastic SO
16-Lead Plastic SO
16-Lead Plastic SO
TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
–55°C to 125°C
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
–55°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.
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.
electricAl chArActeristics
SYMBOL
V
CC
I
CC
PARAMETER
Operating Voltage Range
V
CC
Supply Current
CONDITIONS
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 12V unless otherwise noted.
MIN
l
TYP
1
7
7
7
0.3
0.8
MAX
80
1.5
25
30
40
1
2
8
16
–36
–38
–50
UNITS
V
mA
µA
µA
µA
mA
mA
V
V
µA
µA
µA
mA
mA
mA
V
V
µA
mV
mV
mV
mV
mV
mV
µA
µA
µA
µA
µA
µA
µA
µA
µA
V
43563fc
4
I
R
ΔV
GATE
I
GATE(UP)
I
GATE(DN)
V
FB
I
FB
ΔV
SNS
Reverse Input Current
GATE Pin Output High Voltage
GATE Pin Pull-Up Current
GATE Pin Pull-Down Current
FB Pin Servo Voltage
FB Pin Input Current
Overcurrent Fault Threshold
V
SHDN
= Float
V
SHDN
= 0V, IN
+
= 1.3V
LT4356C, LT4356I
LT4356H, LT4356MP
V
SNS
= V
CC
= –30V,
SHDN
Open
V
SNS
= V
CC
= V
SHDN
= –30V
V
CC
= 4V; (V
GATE
– V
OUT
)
80V ≥ V
CC
≥ 8V; (V
GATE
– V
OUT
)
V
GATE
= 12V; V
CC
= 12V; LT4356C, LT4356I, LT4356H
V
GATE
= 12V; V
CC
= 12V; LT4356MP
V
GATE
= 48V; V
CC
= 48V
Overvoltage, V
FB
= 1.4V, V
GATE
= 12V
Overcurrent, V
CC
– V
SNS
= 120mV, V
GATE
= 12V
Shutdown Mode, V
SHDN
= 0V, V
GATE
= 12V
V
GATE
= 12V, V
OUT
= 12V; LT4356C, LT4356I
V
GATE
= 12V, V
OUT
= 12V; LT4356H, LT4356MP
V
FB
= 1.25V
ΔV
SNS
= (V
CC
– V
SNS
), V
CC
= 12V; LT4356C, LT4356I
ΔV
SNS
= (V
CC
– V
SNS
), V
CC
= 12V; LT4356H
ΔV
SNS
= (V
CC
– V
SNS
), V
CC
= 12V; LT4356MP
ΔV
SNS
= (V
CC
– V
SNS
), V
CC
= 48V; LT4356C, LT4356I
ΔV
SNS
= (V
CC
– V
SNS
), V
CC
= 48V; LT4356H
ΔV
SNS
= (V
CC
– V
SNS
), V
CC
= 48V; LT4356MP
V
SNS
= V
CC
= 12V to 48V
FLT,
EN = 80V
A
OUT
= 80V
V
TMR
= 1V, V
FB
= 1.5V, (V
CC
– V
OUT
) = 0.5V
V
TMR
= 1V, V
FB
= 1.5V, (V
CC
– V
OUT
) = 75V
V
TMR
= 1.3V, V
FB
= 1.5V, (V
CC
– V
OUT
) = 75V
V
TMR
= 1V,
ΔV
SNS
= 60mV, (V
CC
– V
OUT
) = 0.5V
V
TMR
= 1V,
ΔV
SNS
= 60mV, (V
CC
– V
OUT
) = 80V
V
TMR
= 1V, V
FB
= 1V,
ΔV
SNS
= 0V
FLT
From High to Low, V
CC
= 5V to 80V
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
4.5
10
–4
–4
–4.5
75
4
1.5
1.225
1.215
45
42.5
42.5
46
43
43
5
–23
–23
–30
150
10
5
1.25
1.25
0.3
50
50
50
51
51
51
10
1.275
1.275
1
55
55
56
56
56
57
22
2.5
4.5
–4
–56
–8.5
–6.5
–325
2.7
1.28
I
SNS
I
LEAK
I
TMR
SNS Pin Input Current
FLT,
EN Pins Leakage Current
A
OUT
Pin Leakage Current
TMR Pin Pull-up Current
TMR Pin Pull-down Current
V
TMR
TMR Pin Thresholds
–1.5
–44
–3.5
–2.5
–195
1.5
1.22
–2.5
–50
–5.5
–4.5
–260
2.2
1.25
For more information
www.linear.com/LT4356-3
3
LT4356-3
electricAl chArActeristics
SYMBOL
ΔV
TMR
V
IN+
I
IN+
V
OL
I
OUT
ΔV
OUT
V
SHDN
PARAMETER
Early Warning Period
IN
+
Pin Threshold
IN
+
Pin Input Current
FLT,
EN, A
OUT
Pins Output Low
OUT Pin Input Current
OUT Pin High Threshold
SHDN
Pin Threshold
CONDITIONS
From
FLT
going Low to GATE going Low, V
CC
= 5V to 80V
V
IN+
= 1.25V
I
SINK
= 2mA
I
SINK
= 0.1mA
V
OUT
= V
CC
= 12V; LT4356C, LT4356I, LT4356H
V
OUT
= V
CC
= 12V; LT4356MP
V
OUT
= V
CC
= 12V, V
SHDN
= 0V
ΔV
OUT
= V
CC
– V
OUT
; EN From Low to High
V
CC
= 12V to 48V
V
CC
= 12V to 48V
V
SHDN
= 0V
GATE From High to Low,
ΔV
SNS
= 0
→
120mV; LT4356C,
LT4356I, LT4356H
LT4356MP
GATE From High to Low, V
FB
= 0
→
1.5V
l
l
l
l
l
l
l
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 12V unless otherwise noted.
MIN
80
1.22
TYP
100
1.25
0.3
2
300
200
200
6
0.5
1.4
1.2
–4
2
2
0.25
MAX
120
1.28
1
8
800
300
310
14
0.7
1.7
2.1
2.1
–8
4
4.5
1
UNITS
mV
V
µA
V
mV
µA
µA
mA
V
V
V
V
µA
µs
µs
µs
0.25
0.6
0.4
0.6
–1
V
SHDN(FLT)
SHDN
Pin Float Voltage
SHDN
Pin Current
I
SHDN
Overcurrent Turn Off Delay Time
t
OFF(OC
)
t
OFF(OV)
Overvoltage Turn Off Delay Time
l
l
l
l
l
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to GND unless otherwise
specified.
Note 3:
An internal clamp limits the GATE pin to a minimum of 10V above
the OUT pin. Driving this pin to voltages beyond the clamp may damage
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