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UC1846LQMLV PDF预览

UC1846LQMLV

更新时间: 2024-11-26 12:16:55
品牌 Logo 应用领域
德州仪器 - TI 控制器
页数 文件大小 规格书
10页 644K
描述
Current Mode PWM Controller

UC1846LQMLV 技术参数

生命周期:Obsolete零件包装代码:QLCC
包装说明:QCCN, LCC20,.35SQ针数:20
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.16
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:40 V
最小输入电压:8 V标称输入电压:15 V
JESD-30 代码:S-CQCC-N20长度:8.89 mm
功能数量:1端子数量:20
最高工作温度:125 °C最低工作温度:-55 °C
最大输出电流:0.5 A封装主体材料:CERAMIC, METAL-SEALED COFIRED
封装代码:QCCN封装等效代码:LCC20,.35SQ
封装形状:SQUARE封装形式:CHIP CARRIER
认证状态:Not Qualified筛选级别:MIL-PRF-38535 Class V
座面最大高度:2.54 mm子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:PUSH-PULL
最大切换频率:500 kHz技术:BICMOS
温度等级:MILITARY端子形式:NO LEAD
端子节距:1.27 mm端子位置:QUAD
宽度:8.89 mmBase Number Matches:1

UC1846LQMLV 数据手册

 浏览型号UC1846LQMLV的Datasheet PDF文件第2页浏览型号UC1846LQMLV的Datasheet PDF文件第3页浏览型号UC1846LQMLV的Datasheet PDF文件第4页浏览型号UC1846LQMLV的Datasheet PDF文件第5页浏览型号UC1846LQMLV的Datasheet PDF文件第6页浏览型号UC1846LQMLV的Datasheet PDF文件第7页 
application  
INFO  
UC1846/7  
UC2846/7  
UC3846/7  
available  
Current Mode PWM Controller  
FEATURES  
DESCRIPTION  
Automatic Feed Forward Compensation  
The UC1846/7 family of control ICs provides all of the necessary  
features to implement fixed frequency, current mode control  
schemes while maintaining a minimum external parts count. The  
superior performance of this technique can be measured in im-  
proved line regulation, enhanced load response characteristics, and  
a simpler, easier-to-design control loop. Topological advantages in-  
clude inherent pulse-by-pulse current limiting capability, automatic  
symmetry correction for push-pull converters, and the ability to par-  
allel “power modules" while maintaining equal current sharing.  
Programmable Pulse-by-Pulse Current  
Limiting  
Automatic Symmetry Correction in Push-pull  
Configuration  
Enhanced Load Response Characteristics  
Parallel Operation Capability for Modular  
Power Systems  
Protection circuitry includes built-in under-voltage lockout and pro-  
grammable current limit in addition to soft start capability. A shut-  
down function is also available which can initiate either a complete  
shutdown with automatic restart or latch the supply off.  
Differential Current Sense Amplifier with  
Wide Common Mode Range  
Double Pulse Suppression  
500mA (Peak) Totem-pole Outputs  
1% Bandgap Reference  
Under-voltage Lockout  
Soft Start Capability  
Other features include fully latched operation, double pulse sup-  
pression, deadline adjust capability, and a 1% trimmed bandgap  
reference.  
The UC1846 features low outputs in the OFF state, while the  
UC1847 features high outputs in the OFF state.  
Shutdown Terminal  
500kHZ Operation  
BLOCK DIAGRAM  
5.1 V  
VIN 15  
REFERENCE  
REGULATOR  
2
VREF  
13 VC  
SYNC 10  
UVLO  
LOCKOUT  
F/F  
RT  
CT  
9
8
Q
11 A OUT  
T
OSC  
Q
UC1846  
Output Stage  
C/S-  
3
4
COMP  
0.5 V  
X3  
UC1847  
Output Inverted  
S
S
R
Q
C/S+  
14 B OUT  
+
0.5 mA  
12 GND  
NI  
5
6
E/A  
INV  
CURRENT  
LIMIT ADJUST  
1
16 SHUTDOWN  
COMP  
7
350 mV  
6 k  
UDG-02057  
SLUS352A - JANUARY 1997 - REVISED MARCH 2002  

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