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LYT2003D 参数 Datasheet PDF下载

LYT2003D图片预览
型号: LYT2003D
PDF下载: 下载PDF文件 查看货源
内容描述: [IC LED DRIVER OFFL 390MA 8SOIC]
分类和应用: 驱动
文件页数/大小: 18 页 / 1477 K
品牌: POWERINT [ Power Integrations ]
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LYT2002-2005  
DRAIN  
(D)  
REGULATOR  
6 V  
BYPASS  
(BP)  
+
-
FB  
OUT  
6 V  
5 V  
+
-
Reset  
VILIMIT  
D
Q
STATE  
MACHINE  
FEEDBACK  
(FB)  
VTH  
tSAMPLE-OUT  
ILIM  
DCMAX  
Drive  
FAULT  
AUTO-RESTART  
OPEN-LOOP  
FB  
6.5 V  
tSAMPLE-INPUT  
THERMAL  
SHUTDOWN  
INDUCTANCE  
CORRECTION  
DCMAX  
tSAMPLE-OUT  
SAMPLE  
DELAY  
tSAMPLE-INPUT  
OSCILLATOR  
SOURCE  
(S)  
+
-
ILIM  
SOURCE  
(S)  
VILIMIT  
CONSTANT  
CURRENT  
Current Limit  
Comparator  
LEADING  
EDGE  
BLANKING  
PI-7302-061214  
Figure 2. Functional Block Diagram.  
Pin Functional Description  
E Package  
(eSIP-7C)  
DRAIN (D) Pin:  
Power MOSFET drain connection. It also provides internal  
operating current during start-up and in steady-state operation.  
Exposed Pad  
(On Back Side)  
Internally  
Connected to  
SOURCE Pin  
BYPASS (BP) Pin:  
Connection point for the external 1 mF bypass capacitor connected to  
the internally generated 6 V supply.  
D Package (SO-8C)  
FB 1  
8 S  
7 S  
6 S  
5 S  
FEEDBACK (FB) Pin:  
Controls switching of the power MOSFET during normal opera-  
tion. This pin senses the AC voltage on the bias winding.  
Input is used to regulate both the output voltage in CV mode  
and output current in CC mode based on voltage across the  
bias winding in the flyback portion of the switching cycle. The  
internal inductance correction circuit uses voltage on the bias  
winding during forward part of the switching cycle to sense the  
bulk capacitor voltage.  
BP 2  
1 2 3 4 5  
7
D 4  
Exposed Pad (On Bottom)  
Internally Connected to  
SOURCE Pin  
K Package  
(eSOP-12B)  
FB 1  
12 S  
11 S  
10 S  
9 S  
SOURCE (S) Pin:  
Connected to the MOSFET source and is used for high-voltage  
power and control circuit common returns.  
BP 2  
NC 3  
NC 4  
8 S  
D 6  
7 S  
PI-6906-051614  
Figure 3. Pin Configuration.  
2
Rev. B 09/15  
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