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SG6858DZ

更新时间： 2024-10-28 03:32:27
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD 转换器稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管信息通信管理
页数 文件大小 规格书
13页 502K
描述
Low-Cost, Green-Mode PWM Controller for Flyback Converters

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中文翻译

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SG6858DZ 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Transferred零件包装代码：DIP
包装说明：DIP, DIP8,.3针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.31.00.01风险等级：5.64
Is Samacsys：N模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：22 V最小输入电压：12.5 V
标称输入电压：15 VJESD-30 代码：R-PDIP-T8
JESD-609代码：e3长度：9.415 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
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表面贴装：NO
切换器配置：SINGLE最大切换频率：75 kHz
技术：BICMOS温度等级：AUTOMOTIVE
端子面层：Matte Tin (Sn)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 mm
Base Number Matches：1

SG6858DZ 数据手册

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Product Specification  
Low-Cost, Green-Mode PWM Controller for Flyback Converters  
SG6858  
FEATURES  
DESCRIPTION  
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Green-mode PWM  
This highly integrated PWM controller provides several  
special enhancements designed to meet the low standby  
power needs of low-power SMPS. 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 enables the power supply to meet  
even the strictest power conservation requirements.  
Supports the “Blue Angel” standard  
Low start-up current (10µA)  
Low operating current (2.5mA)  
Leading-edge blanking  
Constant output power limit  
Universal input  
Built-in synchronized slope compensation  
Current-mode operation  
Cycle-by-cycle current limiting  
Under voltage lockout (UVLO)  
Programmable PWM frequency  
The BiCMOS fabrication process enables reducing the  
start-up current to 10µA and the operating current to  
2.5mA. To further improve power conservation, a large  
start-up resistance can be used. Built-in synchronized  
slope compensation ensures the stability of peak current  
mode control. Proprietary internal compensation provides  
a constant output power limit over a universal AC input  
range (90VAC to 264VAC). Pulse-by-pulse current limiting  
ensures safe operation even during short-circuits.  
VDD over-voltage protection (auto restart)  
Gate output voltage clamped at 17V  
Low cost  
Few external components required  
Small SOT-26 and DIP-8 packages  
APPLICATIONS  
To protect the external power MOSFET from being  
damaged by supply over-voltage events, the SG6858’s  
output driver is clamped at 17V. SG6858 controllers can  
be used to improve the performance and reduce the  
production cost of power supplies and can replace linear  
and RCC-mode power adapters. It is available in 8-pin  
DIP and 6-pin SOT-26 packages.  
General-purpose, switching-mode power supplies and  
flyback power converters, such as:  
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Battery chargers for cellular phones, cordless phones,  
PDAs, digital cameras, and power tools  
Power adapters for ink jet printers, video game  
consoles, and portable audio players  
Open-frame SMPS for TV/DVD standby and  
auxiliary supplies, home appliances, and consumer  
electronics  
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Replacements for linear transformers and RCC SMPS  
PC 5V standby power  
TYPICAL APPLICATION  
© System General Corp.  
Version 1.2.1 (IAO33.0045.B2)  
- 1 -  
www.sg.com.tw • www.fairchildsemi.com  
September 25, 2007  
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中文翻译

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