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参数资料
| 型号： | LTC4360CSC8-2#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封装： | LEAD FREE, PLASTIC, MO-203BA, SC-70, 8 PIN |
| 文件页数： | 2/14页 |
| 文件大小： | 1370K |
| 代理商： | LTC4360CSC8-2#TRPBF |
LTC4360-1/LTC4360-2
10
436012fa
Figure 8. Set-Up for Testing 20V Plugged into 5V System
LOAD
436012 F07
OUT
COUT
M1
Si1470DH
IN
LIN
RIN
20V
WALL
ADAPTER
5V
USB
LTC4360
IN
R1
100k
D1
B160
OUT
GND
GATE
+
–
+
–
ICABLE
APPLICATIONS INFORMATION
Figure 7. Input Transient After Overvoltage
VADAPTOR/VOUT
5V/DIV
VIN
20V/DIV
ICABLE
5A/DIV
2s/DIV
436012 F06
FIGURE 5 CIRCUIT
RIN = 150, LIN = 2H
LOAD = 10, COUT = 10F
VADAPTOR
VOUT
As the IN pin can withstand up to 80V, a high voltage N-
channelMOSFETcanbeusedtoprotectthesystemagainst
rugged abuse from high transient or DC voltages up to
the BVDSS of the MOSFET. Figure 6 shows a 50V input
plugged into the LTC4360 controlling a 60V rated MOSFET.
Input transients also occur when the current through the
cable inductance changes abruptly. This can happen when
the LTC4360 turns off the N-channel MOSFET rapidly in an
overvoltage event. Figure 7 shows the effects of a voltage
transientatthewalladaptoroutputVADAPTOR.Thecurrentin
LINwillcauseVINtoovershootandavalanchetheN-channel
MOSFET to COUT. Typically, IN will be clamped to a voltage
of VOUT + 1.3(BVDSS of Si1470DH) = 45V. This is well
below the 85V absolute maximum voltage rating of the
LTC4360. The single, nonrepetitive, pulse of energy (EAS)
absorbedbytheMOSFETduringthisavalanchebreakdown
with a peak current IAS is approximated by the formula:
EAS = 0.5 LIN IAS2
For LIN = 2H and IAS = 4A, then EAS = 16J. This is within
the IAS and EAS capabilities of most MOSFET’s including
the Si1470DH. So in most instances, the LTC4360 can
ride through such transients without a bypass capacitor,
transientvoltagesuppressororotherexternalcomponents
at IN.
Figure 8 shows a particularly severe situation which can
occur in a mobile device with dual power inputs. A 20V
wall adaptor is mistakenly hot-plugged into the 5V device
Figure 6. 50V Hot-Plug into the LTC4360
VIN
20V/DIV
VOUT
1V/DIV
ICABLE
5A/DIV
5s/DIV
436012 F05
FDC5612
RIN = 150m, LIN = 0.7H
LOAD = 10, COUT = 10F
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4360ISC8-1#PBF | 制造商:Linear Technology 功能描述:Bulk 制造商:Linear Technology 功能描述:OVER VOLTAGE PROTECTION CTRL 制造商:Linear Technology 功能描述:OVER VOLTAGE PROTECTION CTRL, 2.5-5.5V, SC-70-8; Controller Applications:Cell,Smart Phones, Digital Cameras, Handheld Computers, MP3,MP4 Players, USB Protection; Internal Switch:No; Supply Voltage Min:2.5V; Supply Voltage Max:5.5V ;RoHS Compliant: Yes |
| LTC4360ISC8-1#TRMPBF | 功能描述:IC OVERVOLTAGE PROT CONT SC70-8 RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统，AdvancedTCA ? 系统，高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
| LTC4360ISC8-1#TRPBF | 功能描述:IC CTLR OVP 80V SHUTDOWN SC70-8 RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统，AdvancedTCA ? 系统，高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
| LTC4360ISC8-2#PBF | 制造商:Linear Technology 功能描述:Bulk |
| LTC4360ISC8-2#TRMPBF | 功能描述:IC OVERVOLTAGE PROT CONT SC70-8 RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统，AdvancedTCA ? 系统，高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
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