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| 型号： | MC33260DR2 |
| 厂商： | ON Semiconductor |
| 文件页数： | 8/22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
8
PIN FUNCTION DESCRIPTION
Pin #
PDIP- -8
Pin #
SO- -8
Function
Description
1
7
Feedback Input
This pin is designed to receive a current that is proportional to the preconverter output
voltage. This information is used for both the regulation and the overvoltage and
undervoltage protections. The current drawn by this pin is internally squared to be used
as oscillator capacitor charge current.
2
8
V
control
This pin makes available the regulation block output. The capacitor connected between
this pin and ground, adjusts the control bandwidth. It is typically set below 20 Hz to
obtain a nondistorted input current.
3
1
Oscillator Capacitor
(C
T
)
The circuit uses an on- -time control mode. This on- -time is controlled by comparing the
C
T
voltage to the V
control
voltage. C
T
is charged by the squared feedback current.
4
2
Zero Current
Detection Input
This pin is designed to receive a negative voltage signal proportional to the current
flowing through the inductor. This information is generally built using a sense resistor.
The Zero Current Detection prevents any restart as long as the Pin 4 voltage is below
(- -60 mV). This pin is also used to perform the peak current limitation. The overcurrent
threshold is programmed by the resistor connected between the pin and the external
current sense resistor.
5
3
Synchronization
Input
This pin is designed to receive a synchronization signal. For instance, it enables to
synchronize the PFC preconverter to the associated SMPS. If not used, this pin must
be grounded.
6
4
Ground
This pin must be connected to the preregulator ground.
7
5
Gate Drive
The gate drive current capability is suited to drive an IGBT or a power MOSFET.
8
6
V
CC
This pin is the positive supply of the IC. The circuit turns on when V
CC
becomes higher
than 11 V, the operating range after startup being 8.5 V up to 16 V.
Figure 21. Application Schematic
1
8
7
6
5
2
3
4
L1
Filtering
Capacitor
Sync
M1
C1
D1
+
V
control
V
CC
Load
(SMPS, Lamp
Ballast,...)
R
o
CT
R
OCP
R
cs
D1...D4
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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