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LNK302DG 参数 Datasheet PDF下载

LNK302DG图片预览
型号: LNK302DG
PDF下载: 下载PDF文件 查看货源
内容描述: 使用LinkSwitch -TN系列元件数最少,节能艾菲cient离线式开关IC [LinkSwitch-TN Family Lowest Component Count, Energy-Effi cient Off-Line Switcher IC]
分类和应用: 开关
文件页数/大小: 20 页 / 712 K
品牌: POWERINT [ Power Integrations ]
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LNK302/304-306  
NOTES:  
A. Total current consumption is the sum of IS1 and IDSS when FEEDBACK pin voltage is 2 V (MOSFET not  
switching) and the sum of IS2 and IDSS when FEEDBACK pin is shorted to SOURCE (MOSFET switching).  
B Since the output MOSFET is switching, it is difcult to isolate the switching current from the supply current at the  
DRAIN. An alternative is to measure the BYPASS pin current at 6 V.  
C. See Typical Performance Characteristics section Figure 14 for BYPASS pin start-up charging waveform.  
D. This current is only intended to supply an optional optocoupler connected between the BYPASS and FEEDBACK  
pins and not any other external circuitry.  
E. For current limit at other di/dt values, refer to Figure 13.  
F. This parameter is guaranteed by design.  
G. This parameter is derived from characterization.  
H. Auto-restart on time has the same temperature characteristics as the oscillator (inversely proportional to  
frequency).  
470 Ω  
5 W  
470 kΩ  
0.1 μF  
FB  
BP  
D
S2  
S1  
50 V  
50 V  
S
S
S
S
PI-3490-060204  
Figure 7. LinkSwitch-TN General Test Circuit.  
DC  
(internal signal)  
MAX  
t
P
FB  
t
EN  
V
DRAIN  
1
tP  
=
fOSC  
PI-3707-112503  
Figure 9. LinkSwitch-TN Output Enable Timing.  
Figure 8. LinkSwitch-TN Duty Cycle Measurement.  
12  
Rev. I 11/08  
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