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SG6841S

更新时间： 2024-10-28 20:25:03
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD 信息通信管理光电二极管
页数 文件大小 规格书
14页 391K
描述
Switching Regulator/Controller, Current-mode, 0.15A, 70kHz Switching Freq-Max, BICMOS, PDSO8,

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中文翻译

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SG6841S 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Obsolete包装说明：SOP, SOP8,.25
Reach Compliance Code：compliant风险等级：5.81
Is Samacsys：N控制模式：CURRENT-MODE
JESD-30 代码：R-PDSO-G8湿度敏感等级：2A
端子数量：8最高工作温度：85 °C
最低工作温度：-20 °C最大输出电流：0.15 A
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装等效代码：SOP8,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：250
认证状态：Not Qualified子类别：Switching Regulator or Controllers
表面贴装：YES最大切换频率：70 kHz
技术：BICMOS温度等级：OTHER
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL处于峰值回流温度下的最长时间：30
Base Number Matches：1

SG6841S 数据手册

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Product Specification  
High-integrated Green-mode PWM Controller  
SG6841  
FEATURES  
DESCRIPTION  
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Green-mode PWM to support “Blue Angel” Norm  
Low start up current 30uA  
This highly integrated PWM controllers, SG6841 series,  
provides several features to enhance the performance of  
low power flyback converters. To minimize standby  
power consumption, the proprietary green-mode  
function provides off-time modulation to linearly  
decrease the switching frequency under light-load  
conditions. This green-mode function assists the power  
supply to easily meet the power conservation  
requirement. Due to BiCMOS process, the start-up  
current and operation current is reduced to 30uA and  
3mA, respectively, to improve power conversion  
efficiency. Large start-up resistance can be used for  
further power saving. Built-in synchronized slope  
compensation ensures the stability of peak current mode  
control. A proprietary internal compensation ensures  
constant output power limit for universal AC input  
voltage from 90VAC to 264VAC.  
Low operation current 3mA  
Leading-edge blanking  
Built-in synchronized slope compensation  
Constant output power limit for universal AC input  
Current mode operation  
Cycle-by-cycle current limiting  
Under voltage lockout (UVLO)  
Programmable PWM frequency  
GATE output maximum voltage clamped at 18V  
Totem pole output includes soft driving for better  
EMI  
Build-in limited-power-control to meet safety  
requirement  
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Programmable over-temperature protection  
Few external components & low cost solution  
SG6841 provides many protection functions.  
Pulse by pulse current limit ensures a constant output  
current under short circuit. If a short circuit failure or  
over load happens, the SG6841 will shut off after a  
continuous high voltage detection on FB pin. The gate  
output is clamped at 18V to protect the power MOS  
APPLICATIONS  
General-purpose switching mode power supplies  
and flyback power converters, and  
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Power Adapter  
Open-frame SMPS  
Battery Charger Adapter  
from over voltage damage.  
An external NTC  
thermistor can be applied to sense the ambient  
temperature for over-temperature protection. The  
SG6841 series are available in 8-pin DIP and SO  
packages.  
TYPICAL APPLICATION  
From bridge rectifier  
127~ 373VDC  
From auxiliary  
winding  
D1  
Rg  
RIN  
C
IN  
VIN  
RT  
VDD  
Q1  
GATE  
RA  
RT  
RI
SENSE  
RI  
R
S
FB  
GND  
©System General Corp.  
Version 1.9 (IRO33.0001.B3)  
- 1 -  
www.sg.com.tw  
Apr.6.,2004  
1234567...14

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