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LTC4365IDDB#TRMPBF 数据手册 - Linear Technology（凌力尔特）
制造商:
Linear Technology（凌力尔特）
分类:
电源管理
封装:
DFN-8
描述:
Linear TechnologyLinear Technology 的高度集成控制器 IC，用于需要防止电源过电压、欠电压或反向连接的应用。### 浪涌保护和钳位电路集成电路解决方案，有助于各种应用中的瞬态浪涌和过电压保护。
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LTC4365IDDB#TRMPBF数据手册
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LTC4365
1
4365fa
For more information www.linear.com/LTC4365
Typical applicaTion
FeaTures DescripTion
Overvoltage,
Undervoltage and Reverse
Supply Protection Controller
12V Automotive Application
applicaTions
n
Wide Operating Voltage Range: 2.5V to 34V
n
Overvoltage Protection to 60V
n
Reverse Supply Protection to –40V
n
LTC4365: Blocks 50Hz and 60Hz AC Power
n
LTC4365-1: Fast (1ms) Recovery from Fault
n
No Input Capacitor or TVS Required for Most
Applications
n
Adjustable Undervoltage and Overvoltage
Protection Range
n
Charge Pump Enhances External N-Channel MOSFET
n
Low Operating Current: 125µA
n
Low Shutdown Current: 10µA
n
Compact 8-Lead, 3mm × 2mm DFN and
TSOT-23 (ThinSOT™) Packages
n
Portable Instrumentation
n
Industrial Automation
n
Laptops
n
Automotive Surge Protection
L, LT , LT C , LT M , Linear Technology and the Linear logo are registered trademarks and
ThinSOT and Hot Swap are trademarks of Linear Technology Corporation. All other trademarks
are the property of their respective owners.
Load Protected from Reverse and Overvoltage at V
IN
The LTC
®
4365 protects applications where power supply
input voltages may be too high, too low or even negative.
It does this by controlling the gate voltages of a pair of
external N-channel MOSFETs to ensure that the output
stays within a safe operating range.The LTC4365 can
withstand voltages between –40V and 60V and has an
operating range of 2.5V to 34V, while consuming only
125µA in normal operation.
Tw o comparator inputs allow configuration of the over
-
voltage (OV) and undervoltage (UV) set points using an
external resistive divider. A shutdown pin provides external
control for enabling and disabling the MOSFETs as well
as placing the device in a low current shutdown state. A
fault output provides status of the gate pin pulling low. A
fault is indicated when the part is in shutdown or the input
voltage is outside the UV and OV set points.
The LTC4365 has a 36ms turn-on delay that
debounces
live
connections and blocks 50Hz to 60Hz AC power. For
fast recovery after faults, the LTC4365-1 has a reduced
1ms turn-on delay.
–30V
GND
10V/DIV
30V
4365 TA01b
1s/DIV
UV = 3.5V
OV = 18V
V
OUT
V
OUT
V
IN
V
IN
VALID
WINDOW
V
IN
UV
OV
SHDN
OV = 18V
UV = 3.5V
4365 TA01a
V
OUT
FAULT
GATE
V
IN
12V
V
OUT
3A
Si4946
GND
LTC4365
510k
1820k
243k
59k
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