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FAN4803CS-2 PDF预览

FAN4803CS-2

更新时间: 2024-11-06 21:53:35
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功率因数校正光电二极管
页数 文件大小 规格书
12页 105K
描述
8-Pin PFC and PWM Controller Combo

FAN4803CS-2 技术参数

是否Rohs认证:符合生命周期:Obsolete
零件包装代码:SOIC包装说明:SOIC-8
针数:8Reach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.71Is Samacsys:N
其他特性:AVERAGE CURRENT MODE FOR PFC模拟集成电路 - 其他类型:POWER FACTOR CONTROLLER WITH POST REGULATOR
控制模式:CURRENT-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:16.7 V最小输入电压:9.6 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:70 °C
最低工作温度:最大输出电流:1 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:134 kHz技术:BIPOLAR
温度等级:COMMERCIAL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宽度:3.9 mm
Base Number Matches:1

FAN4803CS-2 数据手册

 浏览型号FAN4803CS-2的Datasheet PDF文件第2页浏览型号FAN4803CS-2的Datasheet PDF文件第3页浏览型号FAN4803CS-2的Datasheet PDF文件第4页浏览型号FAN4803CS-2的Datasheet PDF文件第5页浏览型号FAN4803CS-2的Datasheet PDF文件第6页浏览型号FAN4803CS-2的Datasheet PDF文件第7页 
www.fairchildsemi.com  
FAN4 8 0 3  
8 -P in P FC a n d P WM Co n t ro lle r Co m b o  
Features  
General Description  
• Internally synchronized PFC and PWM in one 8-pin IC  
• Patented one-pin voltage error amplifier with advanced  
input current shaping technique  
The FAN4803 is a space-saving controller for power factor  
corrected, switched mode power supplies that offers very  
low start-up and operating currents.  
• Peak or average current, continuous boost, leading edge  
PFC (Input Current Shaping Technology)  
• High efficiency trailing-edge current mode PWM  
• Low supply currents; start-up: 150µA typ., operating:  
2mA typ.  
• Synchronized leading and trailing edge modulation  
• Reduces ripple current in the storage capacitor between  
the PFC and PWM sections  
Power Factor Correction (PFC) offers the use of smaller, lower  
cost bulk capacitors, reduces power line loading and stress on  
the switching FETs, and results in a power supply fully compli-  
ant to IEC1000-3-2 specifications. The FAN4803 includes  
circuits for the implementation of a leading edge, average  
current “boost” type PFC and a trailing edge, PWM.  
• Overvoltage, UVLO, and brownout protection  
• PFC VCCOVP with PFC Soft Start  
The FAN4803-1’s PFC and PWM operate at the same  
frequency, 67kHz. The PFC frequency of the FAN4803-2 is  
automatically set at half that of the 134kHz PWM. This  
higher frequency allows the user to design with smaller  
PWM components while maintaining the optimum operating  
frequency for the PFC. An overvoltage comparator shuts  
down the PFC section in the event of a sudden decrease in  
load. The PFC section also includes peak current limiting for  
enhanced system reliability.  
Block Diagram  
7
V
CC  
V
PFC OFF  
COMP  
REF  
VEAO  
REF  
+
7V  
V
OVP  
4
CC  
+
17.5V  
GND  
COMP  
16.2V  
2
1
35µA  
M3  
R1  
–1  
M2  
M4  
PFC  
CONTROL  
LOGIC  
PFC OUT  
M1  
C1  
30pF  
M7  
LEADING  
EDGE PFC  
ONE PIN ERROR AMPLIFIER  
TRAILING  
EDGE PWM  
I
SENSE  
+
COMP  
SOFT START  
3
–4  
PFC I  
LIMIT  
+
–1V  
V
PFC/PWM UVLO  
CC  
V
REF  
OSCILLATOR  
PFC – 67kHz  
PWM – 134kHz  
DUTY CYCLE  
LIMIT  
26k  
V
DC  
5
6
PWM COMPARATOR  
COMP  
40k  
+
PWM  
CONTROL  
LOGIC  
PWM OUT  
8
1.2V  
COMP  
+
I
LIMIT  
M6  
DC I  
LIMIT  
1.5V  
+
REV. 1.2.3 11/2/04  

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