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LT1249IN8#PBF PDF预览

LT1249IN8#PBF

更新时间： 2024-11-23 13:09:35
品牌 Logo 应用领域
凌特 - Linear 控制器
页数 文件大小 规格书
12页 194K
描述
LT1249 - Power Factor Controller; Package: PDIP; Pins: 8; Temperature Range: -40°C to 85°C

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中文翻译

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LT1249IN8#PBF 技术参数

是否Rohs认证：符合生命周期：Transferred
零件包装代码：DIP包装说明：DIP, DIP8,.3
针数：8Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.13Is Samacsys：N
模拟集成电路 - 其他类型：POWER FACTOR CONTROLLER控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：25 V
最小输入电压：11.5 VJESD-30 代码：R-PDIP-T8
JESD-609代码：e3湿度敏感等级：1
功能数量：1端子数量：8
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：1.5 A标称输出电压：7.5 V
封装主体材料：PLASTIC/EPOXY封装代码：DIP
封装等效代码：DIP8,.3封装形状：RECTANGULAR
封装形式：IN-LINE峰值回流温度（摄氏度）：NOT SPECIFIED
电源：18 V认证状态：Not Qualified
座面最大高度：3.937 mm子类别：Switching Regulator or Controllers
最大供电电流 (Isup)：12 mA标称供电电压 (Vsup)：18 V
表面贴装：NO切换器配置：SINGLE
最大切换频率：100 kHz技术：BIPOLAR
温度等级：AUTOMOTIVE端子面层：Matte Tin (Sn)
端子形式：THROUGH-HOLE端子节距：2.54 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：7.62 mmBase Number Matches：1

LT1249IN8#PBF 数据手册

 浏览型号LT1249IN8#PBF的Datasheet PDF文件第2页浏览型号LT1249IN8#PBF的Datasheet PDF文件第3页浏览型号LT1249IN8#PBF的Datasheet PDF文件第4页浏览型号LT1249IN8#PBF的Datasheet PDF文件第5页浏览型号LT1249IN8#PBF的Datasheet PDF文件第6页浏览型号LT1249IN8#PBF的Datasheet PDF文件第7页 
LT1249  
Power Factor Controller  
U
FEATURES  
DESCRIPTIO  
The 8-pin LT®1249 provides active power factor correc-  
tion for universal offline power systems with very few  
externalparts.ByusingfixedhighfrequencyPWMcurrent  
averaging without the need for slope compensation, the  
LT1249 achieves far lower line current distortion, with a  
smallermagneticelementthansystemsthatuseeitherpeak  
current detection or zero current switching approach, in  
both continuous and discontinuous modes of operation.  
■
Standard 8-Pin Packages  
■
High Power Factor Over Wide Load Range  
with Line Current Averaging  
■
International Operation Without Switches  
■
Instantaneous Overvoltage Protection  
■
Minimal Line Current Dead Zone  
■
Typical 250µA Start-Up Supply Current  
■
Rejects Line Switching Noise  
■
Synchronization Capability  
The LT1249 uses a multiplier containing a square gain  
function from the voltage amplifier to reduce the AC gain  
at light output load and thus maintains low line current  
distortion and high system stability. The LT1249 also  
provides filtering capability to reject line switching noise  
which can cause instability when fed into the multiplier.  
Line current dead zone is minimized with low bias voltage  
at the current input to the multiplier.  
■
Low Quiescent Current: 9mA  
■
Fast 1.5A Peak Current Gate Driver  
U
APPLICATIO S  
■
Universal Power Factor Corrected Power Supplies  
Preregulators up to 1500W  
■
The LT1249 provides many protection features including  
peak current limiting and overvoltage protection. The  
switching frequency is internally set at 100kHz.  
While the LT1249 simplifies PFC design with minimal  
parts count, the LT1248 provides flexibilities in switching  
frequency, overvoltage and current limit.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
W
BLOCK DIAGRA  
CA  
M
GND  
1
V
VA  
OUT  
OUT  
3
CC  
7
OUT  
2
5
7.5V  
REF  
V
R
4k  
MOUT  
+
–
7.5V  
V
SENSE  
6
+
–
V
RUN  
EA  
CC  
I
I
A
250µA MAX  
16V/10V  
MULTIPLIER  
2 I  
I
M
I
AC  
32k  
1V  
+
I
A
B
I
=
B
M
4
200µA2  
–
+
CA  
–
R
S
Q
GTDR  
8
15µA  
+
g
= 1/3k  
RUN  
m
+
0.7V  
M1  
–
OSC  
+
–
SYNC  
4k  
16V  
44µA  
22µA  
20µA  
35pF  
1249 BD  
1
1234567...12

中文翻译

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