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UC3846 参数 Datasheet PDF下载

UC3846图片预览
型号: UC3846
PDF下载: 下载PDF文件 查看货源
内容描述: 低成本节电模式PWM控制器,用于反激转换器 [LOW COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS]
分类和应用: 转换器控制器
文件页数/大小: 10 页 / 319 K
品牌: UTC [ Unisonic Technologies ]
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UC3846  
LINEAR INTEGRATED CIRCUIT  
„
PIN CONFIGURATION  
„
PIN DESCRIPTION  
PIN NO.  
PIN NAME  
GATE  
VDD  
PIN TYPE  
DESCRIPTION  
1
2
3
O
P
The totem-pole output driver for driving the power MOSFET.  
Power supply.  
NC  
NC pin.  
Current sense input pin. Connected to MOSFET current sensing resistor  
node.  
4
SENSE  
I
I
A resistor connected between RI and GND sets switching frequency. A  
100kresistor Ri results in a 70kHz switching frequency.  
5
6
7
8
RI  
NC  
NC pin.  
Feedback input pin. The PWM duty cycle is determined by voltage level  
into this pin and SENSE pin input.  
Ground.  
FB  
I
GND  
P
UNISONIC TECHNOLOGIES CO., LTD  
2 of 10  
QW-R103-053.B  
www.unisonic.com.tw  
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