- 非IC关键词
深圳市广辉电子有限公司
- 卖家积分：
营业执照：未审核经营模式：所在地区：广东 深圳企业网站：
http://www.liveic.cn
收藏本公司 人气：3633064
企业档案
- 相关证件：
- 会员类型：
- 会员年限：17年
- 陈树辉
- 电话：13686868407
- 手机：13686868407
- 阿库IM：
- 地址：深圳市深南东路金城大厦3-10-A//柜台:深圳市华强北路新华强电子世界Q3B026室
- 传真：0755-82534577
- E-mail：659974144@qq.com
产品分类
- 其他IC(5)
- 整流二极管(15)
- 稳压二极管(14)
- 开关二极管(10)
- 桥堆/整流桥/桥式整流器(25)
- 硅粒子/硅堆/高压二极管(3)
- 检波二极管(1)
- 阻尼二极管(2)
- 变容二极管(2)
- 快/超快/特快恢复二极管(24)
- 瞬态(变)抑制二极管(15)
- ESD静电二极管(6)
- 肖特基二极管(28)
- PIN二极管(1)
- 单向可控硅(晶闸管)(9)
- 双向可控硅(晶闸管)(8)
- 可控硅(晶闸管)模块(41)
- 贴片(片式/SMD)电容(15)
- 铝电解电容(9)
- 钽电解电容(9)
- 安规电容(1)
- 超级(法拉/黄金)电容(2)
- 马达(启动)电容(59)
- 瓷片(瓷介)电容(2)
- 陶瓷电容(5)
- 有机薄膜介质电容(1)
- 聚丙烯(CBB)电容(13)
- 纸膜复合电容(纸介)电容(1)
- 自愈式电容器(4)
- 三脚电容器(1)
- 油浸电容(3)
- 其他电容(7)
- 贴片晶振(5)
- 晶振(普通)(6)
- 表振(晶)/钟振(晶)(3)
- 声表面器件(1)
- 其它逆变器(3)
- 手机/移动通信设备天线(2)
- 红外线发射管(6)
- 红外线接收头(18)
- 光电光耦合器(光耦)(58)
- 光发射机(1)
- 光纤收发器(1)
- 光纤藕合器(1)
- 激光头(1)
- 其他光电子、激光器件(2)
- 其他编码器(1)
- 监控系统(3)
- 无线收发器（模块）(1)
- 其它电子测量仪器(4)
- 其他设备(1)
询价
产品信息
PWM开关电源集成控制器
| UC2842 | UC3842 | |
| Topology | Boost, Flyback, Forward | Boost, Buck, Flyback, Forward |
| Control Method | Current Mode | Current Mode |
| Duty Cycle(Max)(%) | 100 | 100 |
| Frequency(Max)(kHz) | 450 | 450 |
| UVLO Thresholds On/Off(V) | 16/10 | 16/10 |
| Pin/Package | 14SOIC, 8PDIP, 8SOIC | 14SOIC, 8PDIP, 8SOIC |
| Regulated Outputs(#) | 1 | 1 |
| Operating Temperature Range(°C) | -40 to 85 | 0 to 70 |
特性
- Optimized For Off-line and DC-to-DC Converters
- Low Start-Up Current (<1 mA)
- Automatic Feed ForwardCompensation
- Pulse-by-Pulse Current Limiting
- Enhanced Load Response Characteristics
- Under-Voltage Lockout With Hysteresis
- Double Pulse Suppression
- High Current Totem Pole Output
- Internally Trimmed Bandgap Reference
- 500-kHz Operation
- Low RO Error Amp
说明
The UC1842/3/4/5 family of control devices provides the necessary features to implement off-line or dc-to-dc fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include under-voltage lockout featuring start up current less than 1 mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the off state.
Differences between members of this family are the under-voltage lockout thresholds and maximum duty cycle ranges.