June 2010
?2008 Fairchild Semiconductor Corporation
 
www.fairchildsemi.com
SG6961 " Rev. 1.3.2
SG6961
Critical Conduction Mode PFC Controller
 
Features
    Boundary Mode PFC Controller 
    Low Input Current THD 
    Controlled On-Time PWM 
    Zero-Current Detection 
    Cycle-by-cycle Current Limiting 
    Leading-Edge Blanking Instead of RC Filtering 
    Low Startup Current: 10?/SPAN>A (Typical) 
    Low Operating Current: 4.5mA  (Typical) 
    Feedback Open-Loop Protection 
    Programmable Maximum On-Time 
    Output Over-Voltage Clamping Protection 
    Clamped Gate Output Voltage 16.5V 
Applications
    Electric Lamp Ballasts 
    AC-DC Switching Mode Power Converter 
    Open-Frame Power Supplies and Power Adapters 
Description
The SG6961 is an 8-pin boundary mode PFC controller
IC intended for controlling PFC pre-regulators. The
SG6961 provides a controlled on-time to regulate the
output DC voltage and achieve natural power factor
correction. The maximum on-time of the external switch
is programmable to ensure safe operation during AC
brownouts. An innovative multi-vector error amplifier is
built in to provide rapid transient response and precise
output voltage clamping. A built-in circuit disables the
controller if the output feedback loop is opened. The
startup current is lower than 20礎 and the operating
current is under 4.5mA. The supply voltage can be up to
20V, maximizing application flexibility.
 
 
 
Ordering Information
Part Number
Operating
Temperature Range
Package
Packing Method
SG6961SZ
-30癈 to +85癈
8-Pin Small Outline Package (SOP)
Tape & Reel
SG6961DZ
-30癈 to +85癈
8-Pin Dual Inline Package (DIP)
Tube
SG6961SY
-30癈 to +85癈
8-Pin Small Outline Package (SOP)
Tape & Reel
 
相关PDF资料
SI3500-A-GM IC POE SWITCH PWR OVER LAN 20QFN
SI786LSG-E3 IC REG QD BUCK/LINEAR 28SSOP
SIC417CD-T1-E3 IC REG DL BCK/LINEAR SYNC 32MLPQ
SP619EK-L/TR IC HIGH CURRENT SW SOT23-6
TC573302ECTTR IC REG CTRLR SGL 3.3V SOT23A-5
TC670ECHTR IC FAN FAILURE DETECTOR SOT23A-6
TC74A7-5.0VCTTRG IC DGTL THERM SNSR 5.0V SOT23A-5
TC77-5.0MOATR IC THERMAL SENSOR SPI 5V 8-SOIC
相关代理商/技术参数
SG6961SZ 功能描述:功率因数校正 IC Power Factor Controller RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel
SG6980 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Single-Stage PFC Controller
SG6980DDZ 功能描述:开关变换器、稳压器与控制器 Single Stage PFC Controller RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel
SG6980DZ 功能描述:开关变换器、稳压器与控制器 Single Stage PFC Controller RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel
SG6980SZ 功能描述:开关变换器、稳压器与控制器 Single Stage PFC RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel
SG6BA9A 制造商:APEM 功能描述:BA9S 6VAC/DC GREEN LED 制造商:APEM COMPONENTS 功能描述:BA9S 6VAC/DC GREEN LED
SG6N60UFPWD 功能描述:IGBT 晶体管 RoHS:否 制造商:Fairchild Semiconductor 配置: 集电极—发射极最大电压 VCEO:650 V 集电极—射极饱和电压:2.3 V 栅极/发射极最大电压:20 V 在25 C的连续集电极电流:150 A 栅极—射极漏泄电流:400 nA 功率耗散:187 W 最大工作温度: 封装 / 箱体:TO-247 封装:Tube
SG6S009V1A1R400 功能描述:CONN SD CARD 9POS TOP MNT SMD RoHS:是 类别:连接器,互连式 >> 存储器 - PC 卡 - 连接器 系列:SG6 标准包装:1,000 系列:PX10 卡类型:PCMCIA - ExpressCard? 位置数:26 连接器类型:连接器 插入,移除方法:推入式,拉出式 弹出器侧:- 安装类型:表面贴装,直角 特点:板导轨 板上方高度:0.157"(4.00mm) 安装特点:正常,标准 - 顶部 包装:带卷 (TR) 触点表面涂层:金 触点涂层厚度:4µin(0.10µm) 其它名称:670-2333-2PX10BSB00