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LM2578AH PDF预览

LM2578AH

更新时间: 2024-01-09 02:31:45
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器开关
页数 文件大小 规格书
18页 1040K
描述
IC 0.75 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, MBCY8, METAL CAN, TO-99, 8 PIN, Switching Regulator or Controller

LM2578AH 技术参数

是否无铅:含铅是否Rohs认证:不符合
生命周期:Obsolete零件包装代码:DIP
包装说明:DIP, DIP8,.3针数:8
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.79
Is Samacsys:N模拟集成电路 - 其他类型:SWITCHING REGULATOR
控制模式:VOLTAGE-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:40 V最小输入电压:2 V
JESD-30 代码:R-PDIP-T8JESD-609代码:e0
长度:9.817 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:-40 °C最大输出电流:0.75 A
封装主体材料:PLASTIC/EPOXY封装代码:DIP
封装等效代码:DIP8,.3封装形状:RECTANGULAR
封装形式:IN-LINE峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified座面最大高度:5.08 mm
子类别:Switching Regulator or Controllers最大供电电流 (Isup):3.5 mA
表面贴装:NO切换器配置:SINGLE
最大切换频率:100 kHz技术:BIPOLAR
温度等级:INDUSTRIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:7.62 mmBase Number Matches:1

LM2578AH 数据手册

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April 1998  
LM1578A/LM2578A/LM3578A  
Switching Regulator  
General Description  
Features  
n Inverting and non-inverting feedback inputs  
n 1.0V reference at inputs  
The LM1578A is a switching regulator which can easily be  
set up for such DC-to-DC voltage conversion circuits as the  
buck, boost, and inverting configurations. The LM1578A fea-  
tures a unique comparator input stage which not only has  
separate pins for both the inverting and non-inverting inputs,  
but also provides an internal 1.0V reference to each input,  
thereby simplifying circuit design and p.c. board layout. The  
output can switch up to 750 mA and has output pins for its  
collector and emitter to promote design flexibility. An external  
current limit terminal may be referenced to either the ground  
or the Vin terminal, depending upon the application. In addi-  
tion, the LM1578A has an on board oscillator, which sets the  
n Operates from supply voltages of 2V to 40V  
n Output current up to 750 mA, saturation less than 0.9V  
n Current limit and thermal shut down  
n Duty cycle up to 90%  
Applications  
n Switching regulators in buck, boost, inverting, and  
single-ended transformer configurations  
n Motor speed control  
<
switching frequency with a single external capacitor from  
Hz to 100 kHz (typical).  
1
n Lamp flasher  
The LM1578A is an improved version of the LM1578, offer-  
ing higher maximum ratings for the total supply voltage and  
output transistor emitter and collector voltages.  
Functional Diagram  
DS008711-1  
© 1998 National Semiconductor Corporation  
DS008711  
www.national.com  

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