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UC1843ALQMLV PDF预览

UC1843ALQMLV

更新时间: 2024-11-25 22:05:39
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
页数 文件大小 规格书
11页 659K
描述
Current Mode PWM Controller

UC1843ALQMLV 技术参数

生命周期:Obsolete零件包装代码:QLCC
包装说明:CERAMIC, LCC-20针数:20
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.7
Is Samacsys:N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: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:1 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:2.03 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:MILITARY
端子形式:NO LEAD端子节距:1.27 mm
端子位置:QUAD宽度:8.89 mm
Base Number Matches:1

UC1843ALQMLV 数据手册

 浏览型号UC1843ALQMLV的Datasheet PDF文件第2页浏览型号UC1843ALQMLV的Datasheet PDF文件第3页浏览型号UC1843ALQMLV的Datasheet PDF文件第4页浏览型号UC1843ALQMLV的Datasheet PDF文件第5页浏览型号UC1843ALQMLV的Datasheet PDF文件第6页浏览型号UC1843ALQMLV的Datasheet PDF文件第7页 
application  
INFO  
UC1842A/3A/4A/5A  
UC2842A/3A/4A/5A  
UC3842A/3A/4A/5A  
available  
Current Mode PWM Controller  
FEATURES  
DESCRIPTION  
Optimized for Off-line and DC to DC  
The UC1842A/3A/4A/5A family of control ICs is a pin for pin compati-  
ble improved version of the UC3842/3/4/5 family. Providing the nec-  
essary features to control current mode switched mode power  
supplies, this family has the following improved features. Start up cur-  
rent is guaranteed to be less than 0.5mA. Oscillator discharge is  
trimmed to 8.3mA. During under voltage lockout, the output stage  
can sink at least 10mA at less than 1.2V for VCC over 5V.  
Converters  
Low Start Up Current (<0.5mA)  
Trimmed Oscillator Discharge Current  
Automatic Feed Forward Compensation  
Pulse-by-Pulse Current Limiting  
Enhanced Load Response Characteristics  
Under-Voltage Lockout With Hysteresis  
Double Pulse Suppression  
The difference between members of this family are shown in the table  
below.  
Maximum Duty  
Part #  
UVLO On  
UVLO Off  
Cycle  
<100%  
<100%  
<50%  
High Current Totem Pole Output  
Internally Trimmed Bandgap Reference  
500kHz Operation  
UC1842A  
UC1843A  
UC1844A  
UC1845A  
16.0V  
8.5V  
10.0V  
7.9V  
16.0V  
8.5V  
10.0V  
7.9V  
<50%  
Low RO Error Amp  
BLOCK DIAGRAM  
A/B  
Note 1:  
A = DIL-8 Pin Number. B = SO-14 Pin Number.  
Note 2: Toggle flip flop used only in 1844A and 1845A.  
SLUS224A - SEPTEMBER 1994 - REVISED APRIL 2002  

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