Linear Technology LTC4366-2 Demoboard, Very High Voltage Surge Stopper with Auto-Retry DC1850A-B DC1850A-B 数据表
产品代码
DC1850A-B
LTC4366-1/LTC4366-2
436612fd
For more information
www.linear.com/LTC4366
1
Typical applicaTion
FeaTures
DescripTion
High Voltage Surge Stopper
The
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-
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.
Overvoltage Protected 1.5A, 28V Supply
Overvoltage Protector Regulates Output at 43V During Transient
applicaTions
n
Rugged Floating Topology
n
Wide Operating Voltage Range: 9V to >500V
n
Adjustable Output Clamp Voltage
n
Controls N-Channel MOSFET
n
Adjustable Protection Timer
n
Internal 9 Second Cool-Down Timer
n
Shutdown I
Q
< 14µA
n
Available in 8-Lead TSOT and 8-Lead 3mm × 2mm
DFN Packages
n
Industrial, Automotive and Avionic Surge Protection
n
High Voltage DC Distribution
n
28V Vehicle Systems
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.
Patents pending.
V
DD
OUT
2nF
GATE
IXTK90N25L2
SD
FB
1µF
0.47µF
12.4k
V
OUT
1.5A
V
IN
28V
422k
436612 TA01a
46.4k
10Ω
324k
LTC4366-2
TIMER
BASE
V
SS
28V
100ms/DIV
436612 TA01b
28V
43V CLAMP
250V INPUT SURGE
V
IN
100V/DIV
V
OUT
20V/DIV