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LTC4367HDD#PBF

产品描述SUPPLY PROTECTION CONTROLLER
产品类别半导体    电源管理   
文件大小889KB,共22页
制造商Linear ( ADI )
官网地址http://www.analog.com/cn/index.html
标准
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LTC4367HDD#PBF概述

SUPPLY PROTECTION CONTROLLER

LTC4367HDD#PBF规格参数

参数名称属性值
应用过压,低压保护
电流 - 电源70µA
电压 - 电源2.5 V ~ 60 V
工作温度-40°C ~ 125°C
安装类型表面贴装
封装/外壳8-WFDFN 裸露焊盘
供应商器件封装8-DFN(3x3)

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FEATURES
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LTC4367
100V Overvoltage,
Undervoltage and Reverse
Supply Protection Controller
DESCRIPTION
The
LTC
®
4367
protects applications where power sup-
ply 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 LTC4367
withstands voltages between –40V and 100V and has an
operating range of 2.5V to 60V, while consuming only
70µA in normal operation.
Two 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 indicates that the GATE pin is pulling low when
the part is in shutdown or the input voltage is outside the
UV and OV set points.
The LTC4367 has a 32ms turn-on delay that debounces
live connections and blocks 50Hz to 60Hz AC power. For
fast recovery after faults, the LTC4367-1 has a reduced
turn-on delay of 500µs.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT is a trademark of Analog Devices, Inc. All other trademarks are the property of their
respective owners.
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Wide Operating Voltage Range: 2.5V to 60V
Overvoltage Protection to 100V
Reverse Supply Protection to –40V
LTC4367: Blocks 50Hz and 60Hz AC Power
LTC4367: 32ms Recovery from Fault
LTC4367-1: Fast 500µs Recovery from Fault
No Input Capacitor or TVS Required for Most
Applications
Adjustable Undervoltage and Overvoltage Thresholds
Controls Back-to-Back N-Channel MOSFETs
Low Operating Current: 70µA
Low Shutdown Current: 5µA
8-Pin MSOP and 3mm × 3mm DFN Packages
APPLICATIONS
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Portable Instrumentation
Industrial Automation
Automotive Surge (Load Dump) Protection
Network Equipment
TYPICAL APPLICATION
24V Automotive Application with +100V, –40V Protection
V
IN
24V
Si7942
V
OUT
2A
Load Protected from Reverse and Overvoltage at V
IN
+70V
20V/DIV
OV = 36V
UV = 7V
V
IN
V
IN
464k
SHDN
1500k
UV
121k
OV = 36V
UV = 7V
OV
29.4k
GATE
V
OUT
GND
VALID WINDOW
V
OUT
V
OUT
FAULT
–40V
20V/DIV
V
IN
GND
4367 TA01a
200ms/DIV
4367 TA01b
LTC4367
4367fb
For more information
www.linear.com/LTC4367
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