5秒后页面跳转
LTC4270 PDF预览

LTC4270

更新时间: 2023-12-20 18:44:10
品牌 Logo 应用领域
亚德诺 - ADI 控制器
页数 文件大小 规格书
32页 1522K
描述
12 端口 PoE / PoE+ / LTPoE++ PSE 控制器

LTC4270 数据手册

 浏览型号LTC4270的Datasheet PDF文件第3页浏览型号LTC4270的Datasheet PDF文件第4页浏览型号LTC4270的Datasheet PDF文件第5页浏览型号LTC4270的Datasheet PDF文件第7页浏览型号LTC4270的Datasheet PDF文件第8页浏览型号LTC4270的Datasheet PDF文件第9页 
LTC4270/LTC4271  
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating  
temperature range, otherwise specifications are at TA = 25°C. AGND – VEE = 54V and VDD – DGND = 3.3V unless otherwise noted.  
(Notes 3 & 4)  
SYMBOL PARAMETER  
XIO  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
l
l
l
l
V
V
XIO Digital Output Low  
V
V
V
V
– V , I = 5mA  
EE XIOn  
0.7  
V
V
OLX  
OHX  
XIOn  
XIOn  
XIOn  
XIOn  
XIO Digital Output High  
– V , I  
= 100µA  
3.5  
3.4  
EE XIOn  
XIO Digital Input Low Voltage  
XIO Digital Input High Voltage  
Internal Pull Up to CAP2  
– V  
– V  
0.8  
V
EE  
EE  
V
XIO0, XIO1  
50  
kΩ  
PSE Timing Characteristics  
t
t
t
t
t
t
Detection Time  
Beginning To End of Detection (Note 7)  
(Note 7)  
220  
12  
ms  
ms  
ms  
ms  
ms  
ms  
DET  
Class Event Duration  
Class Event Turn On Duration  
Mark Event Duration  
Last Mark Event Duration  
CLE  
l
C
= 0.6µF (Note 7)  
PORT  
0.1  
60  
CLEON  
ME  
(Note 7, Note 11)  
(Note 7, Note 11)  
8.6  
22  
l
l
16  
15  
MEL  
PON  
Power On Delay in AUTO Pin Mode From End of Valid Detect to Application of Power to Port  
(Note 7)  
l
Turn-On Rise Time  
(AGND – V ): 10% to 90% of (AGND - V ) C  
=
24  
µs  
OUT  
EE PORT  
0.15µF (Note 7)  
l
l
l
Turn-On Ramp Rate  
Turn-On Class Transition  
Fault Delay  
C
C
= 0.15µF (Note 7)  
= 0.15µF (Note 7)  
10  
V/µs  
ms  
s
PORT  
PORT  
t
t
0.1  
TOCL  
ED  
From I  
or I Fault to Next Detect  
1.0  
1.1  
CUT  
LIM  
(Note 7)  
l
l
l
Midspan Mode Detection Backoff  
Power Removal Detection Delay  
R
= 15.5kΩ (Note 7)  
2.3  
1.0  
52  
2.5  
1.3  
59  
2.7  
2.5  
66  
s
s
PORT  
From Power Removal After t to Next Detect (Note 7)  
DIS  
t
t
Maximum Current Limit Duration (Note 7)  
During Port Start-Up  
ms  
START  
CUT  
l
Maximum Overcurrent Duration  
After Port Start-Up  
(Note 7)  
52  
59  
66  
ms  
l
l
Maximum Overcurrent Duty Cycle (Note 7)  
5.8  
10  
6.3  
12  
6.7  
14  
%
t
Maximum Current Limit Duration  
t
= 1 (Note 7, Note 12)  
ms  
LIM  
LIM  
After Port Start-Up – t Enabled  
LIM  
l
l
l
Maximum Current Limit Duration  
t
= 0 (Note 7, Note 12)  
52  
1.6  
320  
59  
66  
3.6  
380  
ms  
ms  
ms  
LIM  
After Port Start-Up – t as t  
LIM  
CUT  
t
t
t
Maintain Power Signature (MPS)  
Pulse Width Sensitivity  
Current Pulse Width to Reset Disconnect Timer (Note 7,  
Note 8)  
MPS  
DIS  
Maintain Power Signature (MPS)  
Dropout Time  
(Note 7, Note 5)  
350  
2
Masked Shut Down Delay  
(Note 7)  
(Note 7)  
6.5  
3
µs  
s
MSD  
2
l
l
I C Watchdog Timer Duration  
1.5  
3
Minimum Pulse Width for Masked (Note 7)  
Shut Down  
µs  
l
Minimum Pulse Width for RESET (Note 7)  
4.5  
µs  
Rev E  
6
For more information www.analog.com  

与LTC4270相关器件

型号 品牌 获取价格 描述 数据表
LTC4270/ Linear

获取价格

8-Port PoE/PoE PSE Controller
LTC4270_12 Linear

获取价格

12-Port PoE/PoE+/LTPoE++ PSE Controller
LTC4270_15 Linear

获取价格

12-Port PoE/PoE/LTPoE PSE Controller
LTC4270AIUKG#PBF Linear

获取价格

LTC4270/LTC4271 - 12-Port PoE/PoE+/LTPoE++ PSE Controller; Package: QFN; Pins: 52; Tempera
LTC4270BIUKG#PBF Linear

获取价格

暂无描述
LTC4270CIUKG#PBF Linear

获取价格

LTC4270/LTC4271 - 12-Port PoE/PoE+/LTPoE++ PSE Controller; Package: QFN; Pins: 52; Tempera
LTC4271 Linear

获取价格

Quad PoE/PoE/LTPoE PSE Controller
LTC4271 ADI

获取价格

PoE/PoE+/LTPoE++ PSE数字控制器
LTC4271_15 Linear

获取价格

12-Port PoE/PoE/LTPoE PSE Controller
LTC4271IUF#PBF Linear

获取价格

暂无描述