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LNK562PN

更新时间： 2024-01-30 15:10:53
品牌 Logo 应用领域
帕沃英蒂格盛 - POWERINT 变压器开关
页数 文件大小 规格书
16页 752K
描述
Energy Effi cient Off-Line Switcher IC for Linear Transformer Replacement

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LNK562PN 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：DIP
包装说明：DIP,针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：1.74
其他特性：REQUIRES AN AC SUPPLY OF 85 TO 265 V模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制技术：PULSE WIDTH MODULATIONJESD-30 代码：R-PDIP-T7
JESD-609代码：e3长度：9.575 mm
功能数量：1端子数量：7
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：0.2 A封装主体材料：PLASTIC/EPOXY
封装代码：DIP封装形状：RECTANGULAR
封装形式：IN-LINE峰值回流温度（摄氏度）：NOT SPECIFIED
表面贴装：NO切换器配置：SINGLE
最大切换频率：71 kHz温度等级：AUTOMOTIVE
端子面层：Matte Tin (Sn)端子形式：THROUGH-HOLE
端子节距：2.54 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：7.62 mm
Base Number Matches：1

LNK562PN 数据手册

 浏览型号LNK562PN的Datasheet PDF文件第1页浏览型号LNK562PN的Datasheet PDF文件第2页浏览型号LNK562PN的Datasheet PDF文件第3页浏览型号LNK562PN的Datasheet PDF文件第5页浏览型号LNK562PN的Datasheet PDF文件第6页浏览型号LNK562PN的Datasheet PDF文件第7页 
LNK562-564  
C5  
220 µF  
25 V  
VR1*  
D1  
1N4937  
L1  
D4  
UF4002  
RF1*  
R3 1N5240B  
T1  
EE16  
6 V,  
3300 µH  
8.2 Ω  
2 kΩ  
10 V  
L
0.33 A  
2
1
7
6
J-1  
J3-2  
J3-1  
RTN  
2.5 W  
C1  
10 µF  
400 V  
90-265  
VAC  
J-2  
4
N
D2  
1N4005  
5
R1  
37.4 kΩ  
D3  
1N4005  
C4*  
D
S
100 pF  
C3  
330 nF  
50 V  
FB  
BP  
250 VAC  
LinkSwitch-LP  
U1  
R2  
3 kΩ  
LNK564P  
C2  
0.1 µF  
*Optional components  
50 V  
PI-4106-101105  
Figure 5. 6 V, 330 mA CV/CC Linear Replacement Power Supply.  
output of the power supply), the power supply will turn OFF  
for 800 ms and then turn back on for 100 ms. It will continue  
in this mode until the auto-restart threshold is exceeded. This  
function reduces the average output current during an output  
short circuit condition.  
Applications Example  
The circuit shown in Figure 5 is a typical implementation of  
a 6 V, 330 mA, constant voltage, constant current (CV/CC)  
output power supply.  
No-load consumption can be further reduced by increasing C3  
to 0.47 µF or higher.  
AC input differential filtering is accomplished with the very  
low cost inputfilter stage formed by C1 and L1.The proprietary  
frequency jitter feature of the LNK564 eliminates the need for  
an input pi filter, so only a single bulk capacitor is required.  
Adding a sleeve may allow the input inductor L1 to be used as a  
fuseaswellasafiltercomponent.ThisverysimpleFilterfuse™  
input stage further reduces system cost.Alternatively, a fusible  
resistor RF1 may be used to provide the fusing function.  
A Clampless primary circuit is achieved due to the very  
tight tolerance current limit trimming techniques used in  
manufacturing the LNK564, plus the transformer construction  
techniques used. Peak drain voltage is therefore limited to  
typically less than 550 V at 265 VAC, providing significant  
margin to the 700 V minimum drain voltage specification  
(BVDSS).  
Input diode D2 may be removed from the neutral phase in  
applications where decreased EMI margins and/or decreased  
input surge withstand is allowed. In such applications, D1 will  
need to be an 800 V diode.  
Outputrectificationandfilteringisachievedwithoutputrectifier  
D4 and filter capacitor C5. Due to the auto-restart feature, the  
average short circuit output current is significantly less than  
1A,allowinglowcostrectifierD4tobeused.Outputcircuitryis  
designedtohandleacontinuousshortcircuitonthepowersupply  
output. Diode D4 is an ultra-fast type, selected for optimum  
V/I output characteristics. Optional resistor R3 provides a pre-  
load, limiting the output voltage level under no-load output  
conditions.Despitethispre-load,no-loadconsumptioniswithin  
targets at approximately 140 mW at 265 VAC. The additional  
margin of no-load consumption requirement can be achieved  
by increasing the value of R4 to 2.2 kΩ or higher while still  
maintaining output voltage well below the 9 V maximum  
specification. Placement is left on the board for an optional  
Zener clamp (VR1) to limit maximum output voltage under  
open loop conditions, if required.  
The power supply utilizes simplified bias winding voltage  
feedback, enabled by LNK564 ON/OFF control. The resistor  
dividerformedbyR1andR2determinetheoutputvoltageacross  
thetransformerbiaswindingduringtheswitchOFFtime. Inthe  
V/Iconstantvoltageregion,theLNK564deviceenables/disables  
switchingcyclestomaintain1.69VontheFBpin.DiodeD3and  
lowcostceramiccapacitorC3providerectificationandfiltering  
oftheprimaryfeedbackwindingwaveform.Atincreasedloads,  
beyond the constant power threshold, the FB pin voltage begins  
to reduce as the power supply output voltage falls. The internal  
oscillator frequency is linearly reduced in this region until it  
reaches typically 50% of the starting frequency. When the FB  
pin voltage drops below the auto-restart threshold (typically  
0.8 V on the FB pin, which is equivalent to 1 V to 1.5 V at the  
F
10/05  
4
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