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KA3845B 参数 Datasheet PDF下载

KA3845B图片预览
型号: KA3845B
PDF下载: 下载PDF文件 查看货源
内容描述: SMPS控制器 [SMPS Controller]
分类和应用: 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
文件页数/大小: 12 页 / 94 K
品牌: FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
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KA3842B/KA3843B/KA3844B/KA3845B  
Figure 2. Under Voltage Lockout  
During Under-Voltage Lock-Out, the output driver is biased to a high impedance state. Pin 6 should be shunted to ground  
with a bleeder resistor to prevent activating the power switch with output leakage current.  
Figure 3. Error Amp Configuration  
Figure 4. Current Sense Circuit  
Peak current (I ) is determined by the formula:  
S
1.0V  
IS(MAX)= ------------  
RS  
A small RC filter may be required to suppress switch transients.  
5
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