Stopper. LTC4366IDDB Datasheet

LTC4366IDDB Datasheet PDF

Part LTC4366IDDB
Description High Voltage Surge Stopper
Feature LTC4366IDDB; LTC4366 High Voltage Surge Stopper FEATURES nn Rugged Floating Topology nn Wide Operating Voltage R.
Manufacture Linear
Datasheet
Download LTC4366IDDB Datasheet




LTC4366IDDB
LTC4366
High Voltage Surge Stopper
FEATURES
nn Rugged Floating Topology
nn Wide Operating Voltage Range: 9V to >500V
nn Adjustable Output Clamp Voltage
nn Controls N-Channel MOSFET
nn Adjustable Protection Timer
nn Internal 9-Second Cool-Down Timer
nn Shutdown IQ < 14µA
nn 8-Lead TSOT and 3mm × 2mm DFN Packages
APPLICATIONS
nn Industrial, Automotive and Avionic Surge Protection
nn High Voltage DC Distribution
nn 28V Vehicle Systems
DESCRIPTION
The LTC®4366 surge stopper protects loads from high
voltage transients. By controlling the gate of an external
N-channel MOSFET, the LTC4366 regulates the output
during an overvoltage transient. The load may remain
operational while the overvoltage is dropped across the
MOSFET. Placing a resistor in the return line isolates the
LTC4366 and allows it to float up with the supply; therefore,
the upper limit on the output voltage depends only on the
availability of high valued resistors and MOSFET ratings.
An adjustable overvoltage timer prevents MOSFET dam-
age during the surge while an additional 9-second timer
provides for MOSFET cool down. A shutdown pin reduces
the quiescent current to less than 14µA during shutdown.
After a fault the LTC4366-1 latches off while the LTC4366‑2
will auto-retry.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners. Patents pending.
TYPICAL APPLICATION
Overvoltage Protected 1.5A, 28V Supply
VIN
IXTK90N25L2
28V
10Ω 2nF
324k
VDD
SD
GATE
LTC4366-2
OUT
FB
TIMER VSS
BASE
1µF
46.4k
VOUT
1.5A
0.47µF
12.4k
422k
436612 TA01a
Overvoltage Protector Regulates Output at 43V During Transient
250V INPUT SURGE
VIN
100V/DIV
28V
VOUT
20V/DIV 28V
43V CLAMP
100ms/DIV
436612 TA01b
For more information www.linear.com/LTC4366
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LTC4366IDDB
LTC4366
ABSOLUTE MAXIMUM RATINGS (Notes 1, 2) All voltages relative to VSS, unless otherwise noted.
Supply Voltage (VDD) ................................. –0.3V to 10V
Supply Voltage (OUT) .................................. –0.3V to 5V
Input Voltages
FB............................................... –0.3V to OUT + 0.3V
TIMER.................................................... –0.3V to 3.5V
SD........................................................... –0.3V to 10V
Output Voltages
BASE..........................................................–1.5V to 4V
OUT – BASE .......................................... –0.3V to 5.5V
GATE (Note 3)......................................... –0.3V to 15V
GATE – OUT (Note 3).............................. –0.3V to 10V
Currents
IVDD....................................................................10mA
IOUT ....................................................................10mA
BASE.................................................. –300µA to 10µA
SD........................................................–10mA to 10µA
Operating Ambient Temperature Range (Note 4)
LTC4366C................................................. 0°C to 70°C
LTC4366I..............................................–40°C to 85°C
LTC4366H........................................... –40°C to 125°C
LTC4366MP........................................ –55°C to 125°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
TSOT-23 Package Only..................................... 300°C
PIN CONFIGURATION
TOP VIEW
VDD 1
SD 2
TIMER 3
VSS 4
8 GATE
7 OUT
6 FB
5 BASE
TS8 PACKAGE
8-LEAD PLASTIC TSOT-23
TJMAX = 150°C, θJA = 195°C/W
TOP VIEW
VSS 1
8 BASE
TIMER 2
7 FB
9
SD 3
6 OUT
VDD 4
5 GATE
DDB PACKAGE
8-LEAD (3mm × 2mm) PLASTIC DFN
TJMAX = 150°C,
θJA = 75°C/W IF VSS IS SOLDERED TO PCB, θJA = 135°C/W IF VSS IS NOT SOLDERED TO PCB
EXPOSED PAD (PIN 9), PCB VSS CONNECTION OPTIONAL
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For more information www.linear.com/LTC4366



LTC4366IDDB
ORDER INFORMATION
Lead Free Finish
TAPE AND REEL (MINI)
TAPE AND REEL
PART MARKING* PACKAGE DESCRIPTION
LTC4366CTS8-1#TRMPBF LTC4366CTS8-1#TRPBF LTFMC
8-Lead Plastic TSOT-23
LTC4366ITS8-1#TRMPBF LTC4366ITS8-1#TRPBF LTFMC
8-Lead Plastic TSOT-23
LTC4366HTS8-1#TRMPBF LTC4366HTS8-1#TRPBF LTFMC
8-Lead Plastic TSOT-23
LTC4366CDDB-1#TRMPBF LTC4366CDDB-1#TRPBF LFMD
8-Lead (3mm × 2mm) Plastic DFN
LTC4366IDDB-1#TRMPBF LTC4366IDDB-1#TRPBF LFMD
8-Lead (3mm × 2mm) Plastic DFN
LTC4366HDDB-1#TRMPBF LTC4366HDDB-1#TRPBF LFMD
8-Lead (3mm × 2mm) Plastic DFN
LTC4366CTS8-2#TRMPBF LTC4366CTS8-2#TRPBF LTFMF
8-Lead Plastic TSOT-23
LTC4366ITS8-2#TRMPBF LTC4366ITS8-2#TRPBF LTFMF
8-Lead Plastic TSOT-23
LTC4366HTS8-2#TRMPBF LTC4366HTS8-2#TRPBF LTFMF
8-Lead Plastic TSOT-23
LTC4366CDDB-2#TRMPBF LTC4366CDDB-2#TRPBF LFMG
8-Lead (3mm × 2mm) Plastic DFN
LTC4366IDDB-2#TRMPBF LTC4366IDDB-2#TRPBF LFMG
8-Lead (3mm × 2mm) Plastic DFN
LTC4366HDDB-2#TRMPBF LTC4366HDDB-2#TRPBF LFMG
8-Lead (3mm × 2mm) Plastic DFN
LTC4366MPTS8-1#TRMPBF LTC4366MPTS8-1#TRPBF LTFMC
8-Lead Plastic TSOT-23
LTC4366MPTS8-2#TRMPBF LTC4366MPTS8-2#TRPBF LTFMF
8-Lead Plastic TSOT-23
LTC4366MPDDB-1#TRMPBF LTC4366MPDDB-1#TRPBF LFMD
8-Lead (3mm × 2mm) Plastic DFN
LTC4366MPDDB-2#TRMPBF LTC4366MPDDB-2#TRPBF LFMG
8-Lead (3mm × 2mm) Plastic DFN
TRM = 500 pieces. *Temperature grades are identified by a label on the shipping container.
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on 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/
LTC4366
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
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
–55°C to 125°C
–55°C to 125°C
–55°C to 125°C
For more information www.linear.com/LTC4366
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