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UC384XBDR2G PDF预览

UC384XBDR2G

更新时间： 2024-11-23 08:26:11
品牌 Logo 应用领域
安森美 - ONSEMI 控制器
页数 文件大小 规格书
20页 320K
描述
HIGH PERFORMANCE CURRENT MODE CONTROLLERS

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中文翻译

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UC384XBDR2G 技术参数

是否Rohs认证： 符合生命周期：Active
零件包装代码：SOIC包装说明：PLASTIC, LEAD FREE, SOIC-14
针数：14Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.7模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：5.1 V最小输入电压：4.9 V
标称输入电压：5 VJESD-30 代码：R-PDSO-G14
长度：8.65 mm功能数量：1
端子数量：14最高工作温度：70 °C
最低工作温度：最大输出电流：8.8 A
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
座面最大高度：1.75 mm表面贴装：YES
切换器配置：SINGLE最大切换频率：500 kHz
温度等级：COMMERCIAL端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3.9 mm
Base Number Matches：1

UC384XBDR2G 数据手册

 浏览型号UC384XBDR2G的Datasheet PDF文件第2页浏览型号UC384XBDR2G的Datasheet PDF文件第3页浏览型号UC384XBDR2G的Datasheet PDF文件第4页浏览型号UC384XBDR2G的Datasheet PDF文件第5页浏览型号UC384XBDR2G的Datasheet PDF文件第6页浏览型号UC384XBDR2G的Datasheet PDF文件第7页 
UC3844B, UC3845B,  
UC2844B, UC2845B  
High Performance  
Current Mode Controllers  
The UC3844B, UC3845B series are high performance fixed  
frequency current mode controllers. They are specifically designed for  
Off−Line and dc−dc converter applications offering the designer a  
cost−effective solution with minimal external components. These  
integrated circuits feature an oscillator, a temperature compensated  
reference, high gain error amplifier, current sensing comparator, and a  
high current totem pole output ideally suited for driving a power  
MOSFET.  
http://onsemi.com  
PDIP−8  
N SUFFIX  
CASE 626  
8
1
Also included are protective features consisting of input and  
reference undervoltage lockouts each with hysteresis, cycle−by−cycle  
current limiting, a latch for single pulse metering, and a flip−flop  
which blanks the output off every other oscillator cycle, allowing  
output deadtimes to be programmed from 50% to 70%.  
SOIC−8  
D1 SUFFIX  
CASE 751  
8
1
These devices are available in an 8−pin dual−in−line and surface  
mount (SOIC−8) plastic package as well as the 14−pin plastic surface  
mount (SOIC−14). The SOIC−14 package has separate power and  
ground pins for the totem pole output stage.  
The UCX844B has UVLO thresholds of 16 V (on) and 10 V (off),  
ideally suited for off−line converters. The UCX845B is tailored for  
lower voltage applications having UVLO thresholds of 8.5 V (on) and  
7.6 V (off).  
SOIC−14  
D SUFFIX  
CASE 751A  
14  
1
PIN CONNECTIONS  
Features  
1
2
3
4
8
7
6
5
Compensation  
Voltage Feedback  
Current Sense  
V
V
ref  
CC  
• Pb−Free Packages are Available  
Output  
• Trimmed Oscillator for Precise Frequency Control  
• Oscillator Frequency Guaranteed at 250 kHz  
• Current Mode Operation to 500 kHz Output Switching Frequency  
• Output Deadtime Adjustable from 50% to 70%  
• Automatic Feed Forward Compensation  
• Latching PWM for Cycle−By−Cycle Current Limiting  
• Internally Trimmed Reference with Undervoltage Lockout  
• High Current Totem Pole Output  
R /C  
T
GN  
D
T
(Top View)  
Compensation  
1
2
3
4
5
6
7
14  
13  
12  
11  
10  
9
V
ref  
NC  
Voltage Feedback  
NC  
NC  
V
V
CC  
C
Current Sense  
NC  
Output  
GND  
8
R /C  
T
Power Ground  
T
• Undervoltage Lockout with Hysteresis  
• Low Startup and Operating Current  
(Top View)  
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 2 of this data sheet.  
DEVICE MARKING INFORMATION  
See general marking information in the device marking  
section on page 16 of this data sheet.  
Semiconductor Components Industries, LLC, 2004  
1
Publication Order Number:  
September, 2004 − Rev. 3  
UC3844B/D  
1234567...20

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