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SG6846BLSY

更新时间： 2024-10-28 03:32:27
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD 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
页数 文件大小 规格书
15页 445K
描述
Highly Integrated Green-Mode PWM Controller

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中文翻译

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SG6846BLSY 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：SOIC
包装说明：GREEN, MS-012AA, SOP-8针数：8
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.31.00.01风险等级：5.67
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：20 V最小输入电压：11.5 V
标称输入电压：15 VJESD-30 代码：R-PDSO-G8
JESD-609代码：e3长度：4.9 mm
湿度敏感等级：1功能数量：1
端子数量：8最高工作温度：105 °C
最低工作温度：-40 °C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）：260认证状态：Not Qualified
座面最大高度：1.75 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：136 kHz温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)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宽度：3.9 mm
Base Number Matches：1

SG6846BLSY 数据手册

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October 2008  
SG6846B  
Highly Integrated Green-Mode PWM Controller  
Features  
Description  
The highly integrated PWM controller, SG6846B,  
provides several features to enhance the performance  
of fly-back converters. To minimize standby power  
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Low Startup Current: 8µA  
Low Operating Current: 3.7mA  
consumption,  
a
proprietary green-mode function  
Peak-Current Mode Operation with Cycle-by-cycle  
Current Limiting  
provides off-time modulation to continuously decrease  
the switching frequency under light-load conditions.  
Under zero-load conditions, the power supply enters  
burst-mode. This completely shuts off PWM output. If  
VFB is larger than around 1.6V, PWM pulses out. This  
green-mode function enables power supplies to meet  
international power conservation requirements.  
ƒ
PWM Frequency Continuously Decreasing with  
Burst Mode at Light Loads  
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VDD Over Voltage Protection (OVP)  
AC Input Brownout Protection with Hysteresis  
Constant Output Power Limit (Full AC Input Range)  
The SG6846B is designed for SMPS with surge-current  
output. It is incorporated with a two-level OCP function.  
Besides, the cycle-by-cycle current limiting, if the  
switching current is higher than OCP threshold and  
lasts for 200ms, SG6846B stops gate immediately and  
latches itself (BLSY version) or restarts after VDD  
charges up to 16.5V (BCSY version). SG6846B also  
integrates frequency-hopping function internally. The  
frequency hopping function helps reduce EMI emission  
of a power supply with minimum line filters. It has built-  
in synchronized slope compensation, proprietary  
internal compensation for constant output power limit  
over universal AC input range. The gate output is  
clamped at 18V to protect the external MOSFET from  
over-voltage damage.  
Internal Latch Circuit for OVP, OTP, and OCP  
(BLSY, BLSZ)  
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Two-level OCP Delay with 200ms  
Programmable PWM Frequency with Frequency  
Hopping  
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OCP Threshold is 2/3 Peak Current Limit  
Soft Startup Time: 5ms  
Applications  
General-purpose switch-mode power supplies and  
flyback power converters, including:  
Protection include: AC input brownout protection with  
hysteresis and VDD over-voltage protection. For over-  
temperature protection, an external NTC thermistor can  
be applied to sense the ambient temperature. When  
OCP, VDD OVP, or OTP are activated, an internal latch  
circuit is used to latch-off the controller. The latch resets  
when VDD supply is removed.  
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Power Adapters  
Open-frame SMPS  
SMPS with Surge-current Output, such as for  
Printers, Scanners, Motor Drivers  
SG6846B is available in 8-pin SOP package.  
Ordering Information  
Part  
Number  
Operating  
Temperature Range Latch  
OCP  
Packing  
Method  
Eco  
Status  
Package  
SG6846BLSY  
SG6846BLSZ  
SG6846BCSY  
SG6846BCSZ  
-40 to +105°C  
-40 to +105°C  
-40 to +105°C  
-40 to +105°C  
Yes  
Yes  
No  
Green  
RoHS  
Green  
RoHS  
8-Pin Small Outline Package (SOP) Tape & Reel  
8-Pin Small Outline Package (SOP) Tape & Reel  
8-Pin Small Outline Package (SOP) Tape & Reel  
8-Pin Small Outline Package (SOP) Tape & Reel  
No  
For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.  
© 2008 Fairchild Semiconductor Corporation  
SG6846B • Rev. 1.3.3  
www.fairchildsemi.com  
1234567...15

中文翻译

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