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UC384XBVDR2 PDF预览

UC384XBVDR2

更新时间： 2024-11-23 03:23:19
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 295K
描述
HIGH PERFORMANCE CURRENT MODE CONTROLLERS

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中文翻译

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UC384XBVDR2 技术参数

生命周期：Obsolete零件包装代码：SOIC
包装说明：SOP,针数：14
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.83
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 V
JESD-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
宽度：3.9 mm

UC384XBVDR2 数据手册

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UC3842B, UC3843B,  
UC2842B, UC2843B,  
NCV3843BV  
High Performance  
Current Mode Controllers  
http://onsemi.com  
The UC3842B, UC3843B series are high performance fixed  
frequency current mode controllers. They 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.  
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.  
SO–8  
D1 SUFFIX  
CASE 751  
8
1
These devices are available in an 8–pin dual–in–line and surface  
mount (SO–8) plastic package as well as the 14–pin plastic surface  
mount (SO–14). The SO–14 package has separate power and ground  
pins for the totem pole output stage.  
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).  
SO–14  
D SUFFIX  
CASE 751A  
14  
1
PIN CONNECTIONS  
• Trimmed Oscillator for Precise Frequency Control  
• Oscillator Frequency Guaranteed at 250 kHz  
• Current Mode Operation to 500 kHz  
1
2
3
4
8
7
6
5
Compensation  
Voltage Feedback  
Current Sense  
V
V
ref  
CC  
Output  
Gnd  
R /C  
T
T
• Automatic Feed Forward Compensation  
• Latching PWM for Cycle–By–Cycle Current Limiting  
• Internally Trimmed Reference with Undervoltage Lockout  
• High Current Totem Pole Output  
(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  
• Undervoltage Lockout with Hysteresis  
C
• Low Startup and Operating Current  
Current Sense  
NC  
Output  
V
CC  
7(12)  
Gnd  
8
R /C  
T
Power Ground  
T
V
V
CC  
ref  
5.0V  
Reference  
Undervoltage  
Lockout  
(Top View)  
8(14)  
R
R
V
ref  
V
C
Undervoltage  
Lockout  
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
7(11)  
dimensions section on page 16 of this data sheet.  
R /C  
T
Output  
T
Oscillator  
6(10)  
4(7)  
Latching  
PWM  
Power  
Ground  
5(8)  
DEVICE MARKING INFORMATION  
See general marking information in the device marking  
section on page 17 of this data sheet.  
Voltage  
Feedback  
Input  
+
-
2(3)  
Error  
Amplifier  
Current  
Sense  
Input  
Output  
Compensation  
3(5)  
1(1)  
Gnd 5(9)  
Pin numbers in parenthesis are for the D suffix SO-14 package.  
Figure 1. Simplified Block Diagram  
Semiconductor Components Industries, LLC, 2001  
1
Publication Order Number:  
December, 2001 – Rev. 3  
UC3842B/D  
1234567...20

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