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Datasheet > LTC4269CDKD-2#TR
LTC4269CDKD-2#TR PDF预览

LTC4269CDKD-2#TR

更新时间： 2024-09-15 19:05:15
品牌 Logo 应用领域
凌特 - Linear 开关光电二极管
页数 文件大小 规格书
34页 388K
描述
IC SWITCHING CONTROLLER, 560 kHz SWITCHING FREQ-MAX, PDSO32, 7 X 4 MM, PLASTIC, M0-229, DFN-32, Switching Regulator or Controller

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LTC4269CDKD-2#TR 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Transferred零件包装代码：DFN
包装说明：HVSON, SOLCC32,.16,16针数：32
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.22
模拟集成电路 - 其他类型：SWITCHING CONTROLLER控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：25 V
最小输入电压：10 V标称输入电压：12 V
JESD-30 代码：R-PDSO-N32JESD-609代码：e0
长度：7 mm湿度敏感等级：1
功能数量：1端子数量：32
最高工作温度：70 °C最低工作温度：
封装主体材料：PLASTIC/EPOXY封装代码：HVSON
封装等效代码：SOLCC32,.16,16封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：235
认证状态：Not Qualified座面最大高度：0.8 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：SINGLE最大切换频率：560 kHz
技术：CMOS温度等级：COMMERCIAL
端子面层：Tin/Lead (Sn/Pb)端子形式：NO LEAD
端子节距：0.4 mm端子位置：DUAL
处于峰值回流温度下的最长时间：20宽度：4 mm
Base Number Matches：1

LTC4269CDKD-2#TR 数据手册

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LTC4269-2  
IEEE 802.3at High Power PD  
and Synchronous Forward  
Controller with AUX Support  
DescripTion  
FeaTures  
The LTC®4269-2 is an integrated Powered Device (PD)  
interfaceandpowersupplycontrollerfeaturing2-event  
classification signaling, flexible auxiliary power op-  
tions, and a power supply controller suitable for syn-  
chronously rectified forward supplies. These features  
make the LTC4269-2 ideally suited for an IEEE802.3at  
PD application.  
n
25.5W IEEE 802.3at Compliant (Type-2) PD  
+
n
PoE 2-Event Classification  
n
IEEE 802.3at High Power Available Indicator  
n
Integrated State-of-the-Art Synchronous Forward  
Controller  
– Isolated Power Supply Efficiency >94%  
n
Flexible Auxiliary Power Interface  
Superior EMI Performance  
n
n
The PD controller features a 100V MOSFET that isolates  
the power supply during detection and classification, and  
provides 100mA inrush current limit. Also included are  
power good outputs, an undervoltage/overvoltage lock-  
out and thermal protection. The current mode forward  
controller allows for synchronous rectification, resulting  
in an extremely high efficiency, green product. Soft-start  
for controlled output voltage start-up and fault recovery is  
included.Programmablefrequencyover100kHzto500kHz  
allows flexibility in efficiency vs size and low EMI.  
Robust 100V 0.7Ω (Typ) Integrated Hot Swap™  
MOSFET  
n
Integrated Signature Resistor, Programmable Class  
Current, UVLO, OVLO and Thermal Protection  
n
Short-Circuit Protection with Auto-Restart  
n
Programmable Switching Frequency from  
100kHz to 500kHz  
n
Thermally Enhanced 7mm × 4mm DFN Package  
applicaTions  
n
IP Phones with Large Color Screens  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and  
Hot Swap, ThinSOT are trademarks of Linear Technology Corporation. All other trademarks  
are the property of their respective owners.  
n
Dual Radio 802.11n Access Points  
n
PTZ Security Cameras  
Typical applicaTion  
PoE-Based Self-Driven Synchronous Forward Power Supply  
1mH  
•
6.8µH  
5V  
5A  
•
+
10µH  
10µF  
5.1Ω  
220µF  
•
+
33k  
4.7nF  
2.2µF  
237k  
0.1µF  
V
CC  
+
10.0k  
10µF  
~ +  
~ –  
54V FROM  
DATA PAIR  
10k  
133Ω  
4.7nF  
SD_V  
SEC  
PORTP  
V
S
OUT  
PWRGD  
IN  
OUT  
V
CC  
2k  
~ +  
~ –  
V
OC  
54V FROM  
SPARE PAIR  
11.3k  
1.5k  
33k  
50mΩ  
0.1µF  
I
SENSE  
10nF  
22k  
LTC4269-2  
R
CLASS  
COMP  
FB  
0.1µF  
30.9Ω  
SHDN  
V
1.2k  
V
REF  
PORTN  
T2P V  
NEG  
PGND GND BLANK DELAY  
R
SS_MAXDC  
22.1k  
OSC  
TLV431  
3.65k  
0.22µF  
82k  
332k 158k  
158k  
TO  
42692 TA01  
MICRO-  
CONTROLLER  
42692fb  
ꢀ
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中文翻译

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