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LNK304GN-TL PDF预览

LNK304GN-TL

更新时间: 2024-01-13 12:51:32
品牌 Logo 应用领域
帕沃英蒂格盛 - POWERINT 开关
页数 文件大小 规格书
20页 712K
描述
LinkSwitch-TN Family Lowest Component Count, Energy-Effi cient Off-Line Switcher IC

LNK304GN-TL 技术参数

生命周期:Obsolete零件包装代码:DIP
包装说明:DIP,针数:8
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.6
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制技术:PULSE WIDTH MODULATION
JESD-30 代码:R-PDIP-T8长度:9.575 mm
功能数量:1端子数量:8
最高工作温度:85 °C最低工作温度:-20 °C
最大输出电流:0.4 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认证状态:Not Qualified
表面贴装:NO切换器配置:BUCK
最大切换频率:70 kHz温度等级:COMMERCIAL EXTENDED
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL宽度:6.35 mm
Base Number Matches:1

LNK304GN-TL 数据手册

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LNK302/304-306  
®
LinkSwitch-TN Family  
Lowest Component Count, Energy-Efcient  
Off-Line Switcher IC  
Product Highlights  
Cost Effective Linear/Cap Dropper Replacement  
Lowest cost and component count buck converter solution  
Fully integrated auto-restart for short-circuit and open  
loop fault protection – saves external component costs  
LNK302 uses a simplied controller without auto-restart  
for very low system cost  
66 kHz operation with accurate current limit – allows low cost  
off-the-shelf 1 mH inductor for up to 120 mA output current  
Tight tolerances and negligible temperature variation  
High breakdown voltage of 700 V provides excellent  
input surge withstand  
FB  
BP  
S
D
+
+
Wide Range  
HV DC Input  
DC  
LinkSwitch-TN  
Output  
PI-3492-111903  
Figure 1. Typical Buck Converter Application (See Application  
Examples Section for Other Circuit Congurations).  
Frequency jittering dramatically reduces EMI (~10 dB)  
– minimizes EMI lter cost  
High thermal shutdown temperature (+135 °C minimum)  
OUTPUT CURRENT TABLE1  
230 VAC ±15%  
MDCM2 CCM3 MDCM2 CCM3  
LNK302P/G/D 63 mA 80 mA 63 mA 80 mA  
85-265 VAC  
PRODUCT4  
Much Higher Performance over Discrete Buck and  
Passive Solutions  
Supports buck, buck-boost and yback topologies  
System level thermal overload, output short-circuit and  
open control loop protection  
LNK304P/G/D 120 mA 170 mA 120 mA 170 mA  
LNK305P/G/D 175 mA 280 mA 175 mA 280 mA  
LNK306P/G/D 225 mA 360 mA 225 mA 360 mA  
Excellent line and load regulation even with typical  
conguration  
High bandwidth provides fast turn-on with no overshoot  
Current limit operation rejects line ripple  
Universal input voltage range (85 VAC to 265 VAC)  
Built-in current limit and hysteretic thermal protection  
Higher efciency than passive solutions  
Higher power factor than capacitor-fed solutions  
Entirely manufacturable in SMD  
Table 1. Output Current Table.  
Notes:  
1. Typical output current in a non-isolated buck converter. Output power  
capability depends on respective output voltage. See KeyApplications  
Considerations Section for complete description of assumptions,  
including fully discontinuous conduction mode (DCM) operation.  
2. Mostly discontinuous conduction mode.  
3. Continuous conduction mode.  
4. Packages: P: DIP-8B, G: SMD-8B, D: SO-8C.  
EcoSmart®– Extremely Energy Efcient  
Consumes typically only 50/80 mW in self-powered buck  
topology at 115/230 VAC input with no load (opto feedback)  
Consumes typically only 7/12 mW in yback topology  
with external bias at 115/230 VAC input with no load  
Meets California Energy Commission (CEC), Energy  
Star, and EU requirements  
LinkSwitch-TN devices integrate a 700 V power MOSFET,  
oscillator,simpleOn/Offcontrolscheme,ahighvoltageswitched  
currentsource, frequencyjittering, cycle-by-cyclecurrentlimit  
and thermal shutdown circuitry onto a monolithic IC. The start-  
up and operating power are derived directly from the voltage  
on the DRAIN pin, eliminating the need for a bias supply and  
associated circuitry in buck or yback converters. The fully  
integrated auto-restart circuit in the LNK304-306 safely limits  
output power during fault conditions such as short-circuit or  
open loop, reducing component count and system-level load  
protection cost. A local supply provided by the IC allows use  
of a non-safety graded optocoupler acting as a level shifter to  
further enhance line and load regulation performance in buck  
and buck-boost converters, if required.  
Applications  
Appliances and timers  
LED drivers and industrial controls  
Description  
LinkSwitch-TN is specically designed to replace all linear and  
capacitor-fed (cap dropper) non-isolated power supplies in the  
under 360 mA output current range at equal system cost while  
offering much higher performance and energy efciency.  
November 2008  

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