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| 型号： | MC33260DR2 |
| 厂商： | ON Semiconductor |
| 文件页数： | 19/22页 |
| 文件大小： | 372K |
| 描述： | IC PFC COMPACT PRECONVERT 8SOIC |
| 产品变化通告： | LTB Notification 03/Jan/2008 |
| 标准包装： | 1 |
| 系列： | GreenLine™ |
| 模式： | 间歇导电（DCM） |
| 电流 - 启动： | 100µA |
| 电源电压： | 11 V ~ 16 V |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 剪切带 (CT) |
| 其它名称： | MC33260DR2OSCT |
MC33260
http://onsemi.com
19
Figure 38. Circuit Supply Voltage
1
8
7
6
5
2
3
4
D1...D4
+
V
CC
15 V
C
pin8
+
r
R
stup
PDIP- -8 CONFIGURATION SHOWN
MC33260 V
CC
SUPPLY VOLTAGE
Insomeapplications,thearrangementshowninFigure 38
mustbeimplementedtosupplythecircuit.Astartupresistor
is connected between the rectified voltage (or one- -half
wave) to charge the MC33260 V
CC
up to its startup
threshold (11 V typically). The MC33260 turns on and the
V
CC
capacitor (C
pin8
) starts to be charged by the PFC
transformer auxiliary winding. A resistor, r (in the range of
22 ?anda15 VZenershouldbeaddedtoprotectthecircuit
from excessive voltages.
When the PFC preconverter is loaded by an SMPS, the
MC33260shouldpreferablybesuppliedbytheSMPSitself.
Inthisconfiguration,theSMPSstartsfirstandthePFCgets
active when the MC33260 V
CC
supplied by the power
supply, exceeds the device startup level. With this
configuration, the PFC preconverter doesnt require any
auxiliary winding and finally a simple coil can be used.
PCB LAYOUT
The connections of the oscillator and V
control
capacitors
should be as short as possible.
Figure 39. Preconverter Loaded by a Flyback SMPS: MC33260 V
CC
Supply
1
8
7
6
5
2
3
4
V
CC
SMPS Driver
+
+
+
+
+
+
Preconverter Output
+
DIP- -8 CONFIGURATION SHOWN
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC33260DR2G | 功能描述:功率因数校正 IC Critical Conduction Mode PFC 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 |
| MC33260P | 功能描述:功率因数校正 IC Critical Conduction 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 |
| MC33260PG | 功能描述:功率因数校正 IC Critical Conduction Mode PFC 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 |
| MC33261 | 制造商:SPC Multicomp 功能描述:HEATSINK TO220/218 16.7/W 制造商:SPC Multicomp 功能描述:HEATSINK TO220/218 16.7C/W 制造商:SPC Multicomp 功能描述:HEAT SINK; Packages Cooled:TO-218 / TO-220; Thermal Resistance:16.7C/W; External Height - Imperial:1"; External Height - Metric:25.4mm; External Width - Imperial:0.654"; External Width - Metric:16.6mm; Heat Sink Material:Aluminium ;RoHS Compliant: Yes |
| MC33261P | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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