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UC2844AQTR PDF预览

UC2844AQTR

更新时间: 2024-11-22 23:38:55
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 SMPS Controller

UC2844AQTR 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:QLCC包装说明:PLASTIC, LCC-20
针数:20Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.73Is 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:30 V
最小输入电压:10 V标称输入电压:15 V
JESD-30 代码:S-PQCC-J20长度:8.965 mm
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):NOT SPECIFIED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

UC2844AQTR 数据手册

 浏览型号UC2844AQTR的Datasheet PDF文件第2页浏览型号UC2844AQTR的Datasheet PDF文件第3页浏览型号UC2844AQTR的Datasheet PDF文件第4页浏览型号UC2844AQTR的Datasheet PDF文件第5页浏览型号UC2844AQTR的Datasheet PDF文件第6页浏览型号UC2844AQTR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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