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LNK305D PDF预览

LNK305D

更新时间: 2024-02-23 02:59:16
品牌 Logo 应用领域
帕沃英蒂格盛 - POWERINT 开关光电二极管
页数 文件大小 规格书
20页 712K
描述
Lowest Component Count, Energy-Efficient Off-Line Switcher IC

LNK305D 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:SOIC包装说明:SOP,
针数:8Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.15其他特性:REQUIRES AN AC SUPPLY OF 85 TO 256V
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制技术:PULSE WIDTH MODULATION
JESD-30 代码:R-PDSO-G8JESD-609代码:e0
长度:4.9 mm功能数量:1
端子数量:8最高工作温度:125 °C
最低工作温度:-40 °C最大输出电流:0.8 A
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):225认证状态:Not Qualified
座面最大高度:1.75 mm表面贴装:YES
切换器配置:BUCK最大切换频率:70 kHz
温度等级:AUTOMOTIVE端子面层:TIN LEAD
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:30
宽度:3.9 mmBase Number Matches:1

LNK305D 数据手册

 浏览型号LNK305D的Datasheet PDF文件第2页浏览型号LNK305D的Datasheet PDF文件第3页浏览型号LNK305D的Datasheet PDF文件第4页浏览型号LNK305D的Datasheet PDF文件第6页浏览型号LNK305D的Datasheet PDF文件第7页浏览型号LNK305D的Datasheet PDF文件第8页 
LNK302/304-306  
LinkSwitch-TN  
RF1  
D3  
L2  
D
FB  
BP  
S
D2  
R1  
+
C1  
AC  
INPUT  
S
S
L1  
C4  
C5  
C3  
R3  
DC  
OUTPUT  
C2  
S
D1  
D4  
Optimize hatched copper areas (  
) for heatsinking and EMI.  
PI-3750-121106  
Figure 6a. Recommended Printed Circuit Layout for LinkSwitch-TN in a Buck Converter Conguration using P or G Package.  
D3  
L2  
RF1  
D
S
S
S
S
L1  
+
FB  
BP  
D1  
AC  
INPUT  
C3  
C4  
C5  
D2  
C2  
DC  
OUTPUT  
C1  
R3  
R1  
D4  
Optimize hatched copper areas (  
) for heatsinking and EMI.  
PI-4546-011807  
Figure 6b. Recommended Printed Circuit Layout for LinkSwitch-TN in a Buck Converter Conguration using D Package  
to Bottom Side of the Board.  
cycles are skipped. To provide overload protection if no cycles  
are skipped during a 50 ms period, LinkSwitch-TN will enter  
auto-restart (LNK304-306), limiting the average output power  
to approximately 6% of the maximum overload power. Due to  
trackingerrorsbetweentheoutputvoltageandthevoltageacross  
C3 at light load or no load, a small pre-load may be required  
(R4). For the design in Figure 5, if regulation to zero load is  
required, then this value should be reduced to 2.4 kΩ.  
1) Buck converter topology.  
2) The minimum DC input voltage is 70 V. The value of  
input capacitance should be large enough to meet this  
criterion.  
3) For CCM operation a KRP* of 0.4.  
4) Output voltage of 12 VDC.  
5) Efciency of 75%.  
6) A catch/freewheeling diode with trr 75 ns is used for  
MDCM operation and for CCM operation, a diode with  
trr 35 ns is used.  
Key Application Considerations  
7) The part is board mounted with SOURCE pins soldered  
to a sufcient area of copper to keep the SOURCE pin  
temperature at or below 100 °C.  
LinkSwitch-TN Design Considerations  
Output Current Table  
*KRP is the ratio of ripple to peak inductor current.  
Data sheet maximum output current table (Table 1) represents  
the maximum practical continuous output current for both  
mostlydiscontinuousconductionmode(MDCM)andcontinuous  
conductionmode(CCM)ofoperationthatcanbedeliveredfrom  
a given LinkSwitch-TN device under the following assumed  
conditions:  
LinkSwitch-TN Selection and Selection Between  
MDCM and CCM Operation  
SelecttheLinkSwitch-TNdevice,freewheelingdiodeandoutput  
inductor that gives the lowest overall cost. In general, MDCM  
5
Rev. I 11/08  

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