UC3844中文资料仙童半导体数据手册PDF规格书
UC3844规格书详情
Description
The UC3842/UC3843/UC3844/UC3845 are fixed frequencycurrent-mode PWM controller. They are specially designed for Off-Line and DC to DC converter applications with minimum external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator and a high current totempole output for driving a Power MOSFET. The UC3842 and UC3844 have UVLO thresholds of 16V (on) and 10V (off). The UC3843 and UC3845 are 8.5V(on) and 7.9V (off). The UC3842 and UC3843 can operate within 100 duty cycle. The UC3844 and UC3845 can operate with 50 duty cycle.
Features
• Low Start up Current
• Maximum Duty Clamp
• UVLO With Hysteresis
• Operating Frequency up to 500KHz
产品属性
- 产品编号:
UC3844AD
- 制造商:
Microchip Technology
- 类别:
集成电路(IC) > DC-DC 开关控制器
- 包装:
卷带(TR)
- 输出类型:
晶体管驱动器
- 功能:
升压,降压
- 输出配置:
正,可提供隔离
- 拓扑:
升压,降压,反激,正激
- 输出阶段:
1
- 电压 - 供电 (Vcc/Vdd):
10V ~ 30V
- 频率 - 开关:
最高 500kHz
- 占空比(最大):
48%
- 同步整流器:
无
- 时钟同步:
无
- 控制特性:
频率控制
- 工作温度:
0°C ~ 70°C(TA)
- 安装类型:
表面贴装型
- 封装/外壳:
14-SOIC(0.154",3.90mm 宽)
- 供应商器件封装:
14-SOIC
- 描述:
IC REG CTRLR PWM CM 14-SOIC
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
ON |
23+ |
DIP |
20000 |
全新原装假一赔十 |
询价 | ||
ST |
2020+ |
SOP14 |
80000 |
只做自己库存,全新原装进口正品假一赔百,可开13%增 |
询价 | ||
ON |
三年内 |
1983 |
纳立只做原装正品13590203865 |
询价 | |||
ST |
SOP14 |
1 |
一级代理,专注军工、汽车、医疗、工业、新能源、电力 |
询价 | |||
ON |
24+ |
SO-8 |
20000 |
一级代理进口原装现货假一赔十 |
询价 | ||
ST |
22 |
DIP8 |
25000 |
3月31原装,微信报价 |
询价 | ||
ST |
23+ |
DIP-8 |
25630 |
原装正品 |
询价 | ||
TI/德州仪器 |
22+ |
DIP-8 |
9800 |
只做原装正品假一赔十!正规渠道订货! |
询价 | ||
TI |
93+ |
DIP8 |
497 |
全新原装进口自己库存优势 |
询价 | ||
HLF/洪利发 |
18+ |
DIPSOP |
580000 |
可提供国产化证明 |
询价 |
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