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UC2843AD1G PDF预览

UC2843AD1G

更新时间： 2024-11-24 21:19:31
品牌 Logo 应用领域
安森美 - ONSEMI 开关光电二极管
页数 文件大小 规格书
18页 359K
描述
1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDSO8, LEAD FREE, PLASTIC, SOIC-8

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中文翻译

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UC2843AD1G 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：SOP, SOP8,.25
针数：8Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.13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：30 V最小输入电压：8.2 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：85 °C
最低工作温度：-25 °C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峰值回流温度（摄氏度）：260
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：500 kHz
技术：BIPOLAR温度等级：OTHER
端子面层：Tin (Sn)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：40宽度：3.9 mm
Base Number Matches：1

UC2843AD1G 数据手册

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UC3842A, UC3843A,  
UC2842A, UC2843A  
High Performance  
Current Mode Controllers  
The UC3842A, UC3843A series of high performance fixed  
frequency current mode controllers are specifically designed for  
off−line and DC−to−DC converter applications offering the designer a  
cost effective solution with minimal external components. These  
integrated circuits feature a trimmed oscillator for precise duty cycle  
control, 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.  
Also included are protective features consisting of input and  
reference undervoltage lockouts each with hysteresis, cycle−by−cycle  
current limiting, programmable output deadtime, and a latch for single  
pulse metering.  
http://onsemi.com  
PDIP−8  
N SUFFIX  
CASE 626  
8
1
SOIC−14  
D SUFFIX  
CASE 751A  
14  
These devices are available in an 8−pin dual−in−line 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 UCX842A has UYLO thresholds of 16 V (on) and 10 V (off),  
ideally suited for off−line converters. The UCX843A is tailored for  
lower voltage applications having UVLO thresholds of 8.5 V (on) and  
7.6 V (off).  
1
SOIC−8  
D1 SUFFIX  
CASE 751  
8
1
PIN CONNECTIONS  
Features  
• Trimmed Oscillator Discharge Current for Precise Duty Cycle  
Control  
• Current Mode Operation to 500 kHz  
• Automatic Feed Forward Compensation  
Compensation  
Voltage Feedback  
Current Sense  
1
8
V
V
ref  
2
3
4
7
6
5
CC  
Output  
GND  
R /C  
T
T
• Latching PWM for Cycle−By−Cycle Current Limiting  
• Internally Trimmed Reference with Undervoltage Lockout  
• High Current Totem Pole Output  
(Top View)  
1
14  
13  
Compensation  
NC  
V
ref  
• Undervoltage Lockout with Hysteresis  
2
NC  
• Low Startup and Operating Current  
• Direct Interface with ON Semiconductor SENSEFET™ Products  
• Pb−Free Packages are Available  
3
4
12  
11  
Voltage Feedback  
NC  
V
CC  
V
C
5
6
7
10  
9
Current Sense  
NC  
Output  
GND  
R /C  
T
8
Power Ground  
T
(Top View)  
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 15 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, 2005  
1
Publication Order Number:  
November, 2005 − Rev. 8  
UC3842A/D  
1234567...18

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