LINEAR TECHNOLOGY LT4356, LT4363, LTC4364, LTC4365, LTC4366 Technical data
Surge Stoppers
ADJUSTABLE
V
TIMER
OUT
SNSFBGATE
V
CC
LT4363
R
LT4363 High Voltage Surge Stopper with Current Limit
In harsh industrial, automotive and avionic environments, systems must continue operating reliably through severe overvoltage events.
The LT®4363 builds on the first-generation LT4356 by extending overvoltage protection capabilities beyond 100V, without sacrificing
overcurrent protection. Additional features include OV/UV monitoring, fast overcurrent limit and extended cooldown period.
V
4V TO 80V
IN
SNS
V
OUT
ADJUSTABLE
CLAMP
V
100V/DIV
V
OUT
20V/DIV
250V INPUT SURGE
IN
28V
43V CLAMP
28V
100ms/DIV
LTC4366 Floating Surge Stopper
The LTC®4366’s adjustable floating topology is capable of extremely high voltages; the operational upper voltage is limited only
by MOSFET ratings. During high voltage transient events, the LTC4366 clamps the output to a user-defined voltage, while the fault
timer ensures safe shutdown of the MOSFET if the fault persists.
9V TO >500V
RUGGED
FLOATING
TOPOLOGY
IN
LTC4366
REF+
–
R
BIAS
V
OUT
CLAMP
V
200V/DIV
V
OUT
100V/DIV
800V INPUT SURGE
IN
160V
200V CLAMP
160V
20ms/DIV
Part
Number
Operating
Range VIN Max
Reverse
Protection
Overcurrent
Protection Comments Package Options
LT4356 4V to 80V 100V –60V Yes, <100V Surge Stopper with Auxiliary Amplifier 4mm × 3mm DFN, MSOP-10, SO-16
LT4363 4V to 80V 100V –60V Yes, >100V High Voltage Surge Stopper with Current Limit 4mm × 3mm DFN, MSOP-12, SO-16
LTC4364 4V to 80V 100V –40V Yes, >100V Surge Stopper with Ideal Diode 4mm × 3mm DFN, MSOP-16, SO-16
LTC4365 2.5V to 34V 60V –40V No UV, OV and Reverse Supply Protection Controller 3mm × 2mm DFN, TSOT-8
LTC4366 9V to >500V Unlimited Yes No Floating Surge Stopper 3mm × 2mm DFN, TSOT-8
L, LT, LTC, LTM, Linear Technology and the Linear logo are
registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
LTC4364 High Voltage Surge Stopper with Ideal Diode
The LTC4364 adds the ideal diode function along with reverse output protection to the LT4363. The ideal diode protects the load
from a reversed battery, holds up the output during an input brownout, and facilitates diode-ORing.
LTC4365 UV, OV and Reverse Supply Protection Controller
VIN OPERATING RANGE:
2.5V TO 34V
PROTECTS 60V TO –40V
NO TVS REQUIRED
0V/UV THRESHOLDS
Protection to –40V
10µA Shutdown
ADJUSTABLE
Reverse Input
V
IN
4V to 80V
Current
SHDN
UV
OV
GATE
V
IN
LTC4365
SHDN
UV
GND
OV
>80V Surge
Protection
V
OUT
FAULT
Ideal Diode for
Output Hold-Up and
Reverse Protection
LTC4364
TIMER
V
OUT
Window
10V/DIV
Valid
–30V
30V
GND
Overcurrent
Protection
FB
UV = 3.5V
OV = 18V
V
OUT
V
IN
Output Port
Protection to –20V
V
OUT
Adjustable
Output Clamp
ENABLE
FA U LT
V
IN
V
OUT
Features
n
Low Operating Current: 125μA
n
Low Shutdown Current: 10μA
n
Blocks 50Hz and 60Hz AC Power
n
–40°C to 125°C Operation
n
8-Lead, 3mm × 2mm DFN and TSOT-23 Packages
www.linear.com/surgestoppers n 1-800-4-LINEAR
1s/DIV
0712A
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