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UC2846QTR PDF预览

UC2846QTR

更新时间: 2024-11-22 22:15:27
品牌 Logo 应用领域
德州仪器 - TI 稳压器开关式稳压器或控制器电源电路开关式控制器信息通信管理
页数 文件大小 规格书
10页 644K
描述
Current Mode PWM Controller

UC2846QTR 技术参数

是否Rohs认证: 符合生命周期:Obsolete
零件包装代码:QLCC包装说明:QCCJ, LDCC20,.4SQ
针数:20Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
Factory Lead Time:1 week风险等级:5.17
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:7.25 V标称输入电压:15 V
JESD-30 代码:S-PQCC-J20JESD-609代码:e3
长度:8.965 mm湿度敏感等级:2
功能数量:1端子数量:20
最高工作温度:85 °C最低工作温度:-40 °C
最大输出电流:0.5 A标称输出电压:5.1 V
封装主体材料:PLASTIC/EPOXY封装代码:QCCJ
封装等效代码:LDCC20,.4SQ封装形状:SQUARE
封装形式:CHIP CARRIER峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:4.57 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:INDUSTRIAL
端子面层:Matte Tin (Sn)端子形式:J BEND
端子节距:1.27 mm端子位置:QUAD
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:8.965 mm
Base Number Matches:1

UC2846QTR 数据手册

 浏览型号UC2846QTR的Datasheet PDF文件第2页浏览型号UC2846QTR的Datasheet PDF文件第3页浏览型号UC2846QTR的Datasheet PDF文件第4页浏览型号UC2846QTR的Datasheet PDF文件第5页浏览型号UC2846QTR的Datasheet PDF文件第6页浏览型号UC2846QTR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  

UC2846QTR 替代型号

型号 品牌 替代类型 描述 数据表
UC2846Q TI

完全替代

Current Mode PWM Controller
UC3846Q TI

完全替代

Current Mode PWM Controller
UC3846QTR TI

完全替代

Current Mode PWM Controller

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