- 您现在的位置：买卖IC网 > Datasheet目录42 > LTC4268IDKD-1#PBF (Linear Technology)IC PD HIGH POWER W/CNTRL 32-DFN Datasheet资料下载
参数资料
| 型号： | LTC4268IDKD-1#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/46页 |
| 文件大小： | 419K |
| 描述： | IC PD HIGH POWER W/CNTRL 32-DFN |
| 产品培训模块： | Power over Ethernet |
| 标准包装： | 52 |
| 类型： | 以太网供电开关（PoE） |
| 应用： | 远程外设（工业控制，相机，数据访问） |
| 内部开关： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFDFN 裸露焊盘 |
| 供应商设备封装： | 32-DFN（7x4）裸露焊盘 |
| 包装： | 管件 |
当前第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页
42681fc
LTC4268-1
1
High Power PD With
Synchronous No-Opto
Flyback Controller
The LTC
?/DIV>
4268-1 is an integrated Powered Device (PD)
controller and switching regulator intended for IEEE 802.3af
and high power PoE applications up to 35W. By including
a precision dual current limit, the LTC4268-1 keeps inrush
below IEEE 802.3af current limit levels to ensure interop-
erability success while enabling high power applications
with a 750mA operational current limit.
The LTC4268-1 synchronous, current-mode, flyback
controller generates multiple supply rails in a single
conversion providing for the highest system efficiency
while maintaining tight regulation across all outputs. The
LTC4268-1 includes Linear Technologys patented No-Opto
feedback topology to provide full IEEE 802.3af isolation
without the need of opto-isolator circuitry.
The oversized power path and high performance flyback
controller of the LTC4268-1 combine to make the ultimate
solution for power hungry PoE applications such as WAPs,
PTZ security cameras, RFID readers and ultra-efficient
802.3af applications running near the 12.95W limit.
The LTC4268-1 is available in a space saving 32-pin DFN
package.
n
Robust 35W PD Front End
n
IEEE 802.3af Compliant
n
Rugged 750mA Power MOSFET With Precision Dual
Level Current Limit
n
High Performance Synchronous Flyback Controller
n
IEEE Isolation Obtained Without an Opto-Isolator
n
Adjustable Frequency from 50kHz to 250kHz
n
Tight Multi-Output Regulation With Load
Compensation
n
Onboard 25k Signature Resistor
n
Programmable Classification Current to 75mA
n
Complete Thermal and Over-Current Protection
n
Available in Compact 32-Pin 7mm ?4mm DFN
Package
n
VoIP Phones With Advanced Display Options
n
Dual-Radio Wireless Access Points
n
PTZ Security Cameras
n
RFID Readers
n
Industrial Controls
n
Magnetic Card Readers
n
High Power PoE Systems
35W High Efficiency PD Solution
169k
R
CLASS
3.01k
1%
28.7k
1%
20
47
47k
100k
BAS21
56
"
"
"
"
100pF
e5礔
470礔
?
3.3V
54V FROM
DATA PAIR
54V FROM
SPARE PAIR
T1
0.02
47礔
SMAJ58A
T1: PA1477NL
T2: PA0184
DF1501S
DF1501S
0.1礔
100k
20k
10k
15
330
47pF
0.033礔
10nF
2.2nF
T2
0.1礔
42681 TA01a
1礔
BAT54
t
ON
12k
PGDLY
V
NEG
SYNC
R
CLASS
V
PORTN
SHDN
SENSE
V
CMP
SENSE
+
R
CMP
ENDLY OSC
LTC4268-1
GND SFST
SG
Si7336ADP
B0540W
Si4490DY
FMMT618
FMMT718
V
CC
I
LIM_EN
UVLO
PWRGD
PWRGD
V
PORTP
T1
"
PG
FB
C
CMP
+
~
~
+
~
~
+
+
Typical applicaTion
DescripTion
FeaTures
applicaTions
L, LT, LTC, LTM and SwitcherCAD are registered trademarks and LTPoE++ and ThinSOT are
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners. Protected by U.S. Patents including 5841643.
相关PDF资料 |
PDF描述 |
|---|---|
| LTC4274CUHF#PBF | IC CONTROLLER POE 38-QFN |
| LTC4280CUFD#PBF | IC CONTROLLER HOT SWAP QFN-24 |
| LTC4300-1IMS8#TRPBF | IC HOTSWAP 2WIRE BUS BUFFR 8MSOP |
| LTC4300A-2IMS8#TRPBF | IC BUFFER BUS 2WR HOTSWAP 8-MSOP |
| LTC4301IDD | IC BUFFER BUS HOTSWAP 2WR 8DFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4268IDKD-1-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Power PD with Synchronous NoOpto Flyback Controller |
| LTC4268IDKD-1-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Power PD with Synchronous NoOpto Flyback Controller |
| LTC4269-1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:IEEE 802.3at PD with Synchronous No-Opto Flyback Controller |
| LTC4269-2 | 制造商:LINER 制造商全称:Linear Technology 功能描述:IEEE 802.3at High Power PD and Synchronous Forward Controller with AUX Support |
| LTC4269CDKD-1#PBF | 功能描述:IC PD/OPTO FLYBACK CTRLR 32-DFN 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 |
发布紧急采购，3分钟左右您将得到回复。