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UC2843AQ PDF预览

UC2843AQ

更新时间: 2024-11-22 22:41:51
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
7页 519K
描述
Current Mode PWM Controller

UC2843AQ 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:5.68
Samacsys Confidence:3Samacsys Status:Released
Samacsys PartID:182957Samacsys Pin Count:20
Samacsys Part Category:Integrated CircuitSamacsys Package Category:Plastic Leaded Chip Carrier
Samacsys Footprint Name:FN (S-PQCC-J20)Samacsys Released Date:2015-04-13 16:58:34
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:8.2 V
标称输入电压:15 VJESD-30 代码:S-PQCC-J20
JESD-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:1 A
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:SINGLE最大切换频率:500 kHz
技术:BIPOLAR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

UC2843AQ 数据手册

 浏览型号UC2843AQ的Datasheet PDF文件第2页浏览型号UC2843AQ的Datasheet PDF文件第3页浏览型号UC2843AQ的Datasheet PDF文件第4页浏览型号UC2843AQ的Datasheet PDF文件第5页浏览型号UC2843AQ的Datasheet PDF文件第6页浏览型号UC2843AQ的Datasheet PDF文件第7页 
UC1842A/3A/4A/5A  
UC2842A/3A/4A/5A  
UC3842A/3A/4A/5A  
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 compat-  
ible 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.  
9/94  

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