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SC4911IMSTRT PDF预览

SC4911IMSTRT

更新时间: 2024-01-21 13:22:18
品牌 Logo 应用领域
商升特 - SEMTECH 控制器
页数 文件大小 规格书
14页 217K
描述
Bias/Primary Side PWM Controller with Ultra Low Start-up Current

SC4911IMSTRT 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:TSSOP
包装说明:TSSOP, TSSOP8,.19针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.68
模拟集成电路 - 其他类型:SWITCHING CONTROLLER控制模式:VOLTAGE-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:15 V
最小输入电压:7 V标称输入电压:12 V
JESD-30 代码:S-PDSO-G8JESD-609代码:e3
长度:3 mm功能数量:1
端子数量:8最高工作温度:125 °C
最低工作温度:-40 °C最大输出电流:0.25 A
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装等效代码:TSSOP8,.19封装形状:SQUARE
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified座面最大高度:1.1 mm
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:SINGLE最大切换频率:500 kHz
技术:BICMOS温度等级:AUTOMOTIVE
端子面层:Matte Tin (Sn)端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:3 mm
Base Number Matches:1

SC4911IMSTRT 数据手册

 浏览型号SC4911IMSTRT的Datasheet PDF文件第2页浏览型号SC4911IMSTRT的Datasheet PDF文件第3页浏览型号SC4911IMSTRT的Datasheet PDF文件第4页浏览型号SC4911IMSTRT的Datasheet PDF文件第5页浏览型号SC4911IMSTRT的Datasheet PDF文件第6页浏览型号SC4911IMSTRT的Datasheet PDF文件第7页 
SC4911  
Bias/Primary Side PWM Controller  
with Ultra Low Start-up Current  
POWER MANAGEMENT  
Description  
Features  
The SC4911 is a highly integrated bias/primary side PWM ‹ Programmable switching frequency up to 500kHz  
controller designed for off-line or isolated dc-dc convert-  
ers in telecommunication and data communication ap-  
plications. The high degree of integration minimizes the  
amount of discrete parts needed and leads to substan-  
tial cost and space saving converter designs.  
‹ Line UVLO Protection  
‹ Undervoltage Lockout  
‹ Low startup current (45µA)  
‹ Cycle by cycle current limit  
‹ 8 pin MSOP. Available in Lead-free, fully WEEE and  
RoHS compliant  
The circuitry of the SC4911 includes line voltage UVLO  
featuring startup current less than 50µA and program-  
mable switching frequency. The device supply is derived  
from an auxiliary winding on the transformer. The auxil-  
iary winding could also provide output feedback informa-  
tion if an optocoupler is not used.  
Applications  
‹ Telecom isolated converters  
‹ Offline isolated power supplies  
‹ Instrumentation power supplies  
‹ Battery chargers  
Typical Application Circuit  
D1  
T1  
D2  
C1  
Vout  
R1  
Vin  
C2  
R2  
C3  
R3  
C6  
C4  
R4  
C5  
R5  
U1 SC4911  
Q1  
3
7
FB  
OUT  
R6  
4
5
COMP  
ILIM  
R7  
C7  
C8  
R8  
R9  
Revision: April 5, 2006  
1
www.semtech.com  

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