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UC3842BD1R2G PDF预览

UC3842BD1R2G

更新时间： 2024-02-05 13:52:37
品牌 Logo 应用领域
安森美 - ONSEMI 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
21页 370K
描述
High Performance Current Mode Controllers

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中文翻译

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UC3842BD1R2G 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SOIC
包装说明：SOP, SOP8,.25针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：0.45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：25 V最小输入电压：12 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：70 °C
最低工作温度：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：COMMERCIAL
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

UC3842BD1R2G 数据手册

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UC3842B, UC3843B,  
UC2842B, UC2843B,  
NCV3843BV  
High Performance Current  
Mode Controllers  
The UC3842B, UC3843B 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 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.  
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, programmable output deadtime, and a latch for single  
pulse metering.  
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.  
SOIC−14  
D SUFFIX  
CASE 751A  
14  
1
SOIC−8  
D1 SUFFIX  
8
The UCX842B has UVLO thresholds of 16 V (on) and 10 V (off),  
ideally suited for off−line converters. The UCX843B is tailored for  
lower voltage applications having UVLO thresholds of 8.5 V (on) and  
7.6 V (off).  
CASE 751  
1
PIN CONNECTIONS  
Features  
• Trimmed Oscillator for Precise Frequency Control  
• Oscillator Frequency Guaranteed at 250 kHz  
• Current Mode Operation to 500 kHz  
• Automatic Feed Forward Compensation  
• Latching PWM for Cycle−By−Cycle Current Limiting  
• Internally Trimmed Reference with Undervoltage Lockout  
• High Current Totem Pole Output  
1
2
3
4
8
7
6
5
Compensation  
Voltage Feedback  
Current Sense  
V
V
ref  
CC  
Output  
GND  
R /C  
T
T
(Top View)  
Compensation  
1
2
3
4
5
6
7
14  
13  
12  
11  
10  
9
V
ref  
NC  
Voltage Feedback  
NC  
NC  
• Undervoltage Lockout with Hysteresis  
• Low Startup and Operating Current  
• Pb−Free Packages are Available  
V
V
CC  
C
Current Sense  
NC  
Output  
GND  
V
7(12)  
CC  
8
R /C  
T
Power Ground  
T
V
V
CC  
ref  
5.0V  
Reference  
(Top View)  
Undervoltage  
Lockout  
8(14)  
R
R
V
ref  
V
C
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 17 of this data sheet.  
Undervoltage  
Lockout  
7(11)  
R /C  
T
Output  
T
Oscillator  
6(10)  
4(7)  
Latching  
PWM  
DEVICE MARKING INFORMATION  
See general marking information in the device marking  
section on page 19 of this data sheet.  
Power  
Ground  
5(8)  
Voltage  
Feedback  
Input  
+
−
2(3)  
Output  
Compensation  
Error  
Amplifier  
Current  
Sense  
Input  
3(5)  
1(1)  
GND 5(9)  
Pin numbers in parenthesis are for the D suffix SOIC−14 package.  
Figure 1. Simplified Block Diagram  
©
Semiconductor Components Industries, LLC, 2007  
1
Publication Order Number:  
February, 2007 − Rev. 9  
UC3842B/D  
1234567...21

中文翻译

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UC3842BD1R2G 替代型号

型号 品牌 替代类型 描述 数据表
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