5秒后页面跳转
UC1843A-SP PDF预览

UC1843A-SP

更新时间: 2024-11-24 11:07:55
品牌 Logo 应用领域
德州仪器 - TI 开关控制器开关式稳压器开关式控制器电源电路开关式稳压器或控制器
页数 文件大小 规格书
11页 659K
描述
耐辐射 QMLV、增强型 30V 输入、1A 500kHz PWM 控制器、100% 占空比

UC1843A-SP 数据手册

 浏览型号UC1843A-SP的Datasheet PDF文件第2页浏览型号UC1843A-SP的Datasheet PDF文件第3页浏览型号UC1843A-SP的Datasheet PDF文件第4页浏览型号UC1843A-SP的Datasheet PDF文件第5页浏览型号UC1843A-SP的Datasheet PDF文件第6页浏览型号UC1843A-SP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  

与UC1843A-SP相关器件

型号 品牌 获取价格 描述 数据表
UC1843AVTD1 TI

获取价格

CURRENT-MODE PWM CONTROLLER
UC1843AVTD2 TI

获取价格

CURRENT-MODE PWM CONTROLLER
UC1843AY ETC

获取价格

Current-Mode SMPS Controller
UC1843BHKU/EM TI

获取价格

Radiation-hardened QMLV, 30-V input, 1-A single-output 500-kHz PWM controller, 100% duty c
UC1843B-SP TI

获取价格

耐辐射 QMLV、30V 输入、1A 单路输出、100% 占空比 500kHz PWM 控
UC1843D ETC

获取价格

SMPS Controller
UC1843D8 ETC

获取价格

SMPS Controller
UC1843D8TR ETC

获取价格

SMPS Controller
UC1843-DIE TI

获取价格

CURRENT MODE PWM CONTROLLER
UC1843DTR ETC

获取价格

SMPS Controller