5秒后页面跳转
LR745N8-G PDF预览

LR745N8-G

更新时间: 2024-10-30 02:55:55
品牌 Logo 应用领域
美国微芯 - MICROCHIP /
页数 文件大小 规格书
15页 333K
描述
High-Input Voltage SMPS Start-up

LR745N8-G 技术参数

是否Rohs认证: 符合生命周期:Active
包装说明:GREEN, TO-243AA, SOT-89, 3 PINReach Compliance Code:compliant
HTS代码:8542.39.00.01Factory Lead Time:5 weeks
风险等级:1.13模拟集成电路 - 其他类型:ANALOG CIRCUIT
JESD-30 代码:R-PSSO-F3JESD-609代码:e3
长度:4.5 mm功能数量:1
端子数量:3最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装等效代码:TO-243封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):NOT SPECIFIED
电源:450 V认证状态:Not Qualified
座面最大高度:1.6 mm子类别:Switching Regulator or Controllers
最大供电电压 (Vsup):450 V最小供电电压 (Vsup):35 V
标称供电电压 (Vsup):400 V表面贴装:YES
温度等级:INDUSTRIAL端子面层:MATTE TIN
端子形式:FLAT端子节距:1.5 mm
端子位置:SINGLE处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:2.445 mm

LR745N8-G 数据手册

 浏览型号LR745N8-G的Datasheet PDF文件第2页浏览型号LR745N8-G的Datasheet PDF文件第3页浏览型号LR745N8-G的Datasheet PDF文件第4页浏览型号LR745N8-G的Datasheet PDF文件第5页浏览型号LR745N8-G的Datasheet PDF文件第6页浏览型号LR745N8-G的Datasheet PDF文件第7页 
LR745  
High-Input Voltage SMPS Start-up  
Features  
Description  
• Accepts inputs from 35 to 450V  
• Output current limiting  
LR745 is a high input voltage SMPS start-up circuit.  
LR745 is ideally suited for use with industry standard  
low-voltage, Pulse-Width Modulation (PWM) ICs hav-  
ing start thresholds of 13.9 to 18.0V. It allows the PWM  
ICs to be operated from rectified 120 or 240VAC lines,  
and eliminates the use of power resistors often used for  
this purpose.  
• For PWM ICs with start-up threshold voltage of  
13.9 - 18.0V  
• Very low power consumption after start-up  
Applications  
The internal circuitry of the LR745 allows the PWM ICs  
to operate at a VCC voltage below their start-threshold  
voltage after start-up. The auxiliary voltage can be less  
than the start-threshold voltage, which allows for  
improved efficiency. Current from the high voltage line  
is drawn only during the start-up period. After start-up,  
the internal, high-voltage line is disconnected from the  
IC, thereby reducing the continuous power dissipation  
to a minimum.  
• Notebook and laptop computers  
Telecommunication power supplies  
• Battery chargers  
• Motor controllers  
2015 Microchip Technology Inc.  
DS20005394A-page 1  

LR745N8-G 替代型号

型号 品牌 替代类型 描述 数据表
LR745N8-G SUPERTEX

类似代替

Analog Circuit, 1 Func, PSSO3, GREEN, TO-243AA, SOT-89, 3 PIN
LR745N8 SUPERTEX

功能相似

High Input Voltage SMPS Start-up Circuit

与LR745N8-G相关器件

型号 品牌 获取价格 描述 数据表
LR745N8-G-P003 MICROCHIP

获取价格

High-Input Voltage SMPS Start-up
LR745N8-G-P013 MICROCHIP

获取价格

High-Input Voltage SMPS Start-up
LR745ND ETC

获取价格

Analog IC
LR750Z SEOUL

获取价格

GREEN OVAL LAMP LED
LR751 SEOUL

获取价格

INFRARED LAMP LED
LR7530 LRC

获取价格

100mA CMOS Low Power LDO Low power consumption
LR7530-1 LRC

获取价格

100mA CMOS Low Power LDO Low power consumption
LR7533-1 LRC

获取价格

100mA CMOS Low Power LDO Low power consumption
LR7536-1 LRC

获取价格

100mA CMOS Low Power LDO Low power consumption
LR7544-1 LRC

获取价格

100mA CMOS Low Power LDO Low power consumption