UC3845N集成电路(IC)DC-DC开关控制器规格书PDF中文资料
厂商型号 |
UC3845N |
参数属性 | UC3845N 封装/外壳为8-DIP(0.300",7.62mm);包装为管件;类别为集成电路(IC) > DC-DC 开关控制器;产品描述:IC REG CTRLR BOOST/FLYBACK 8DIP |
功能描述 | 升压,升压/降压 |
文件大小 |
376.23 Kbytes |
页面数量 |
14 页 |
生产厂商 | ON Semiconductor |
企业简称 |
ONSEMI【安森美半导体】 |
中文名称 | 安森美半导体公司官网 |
原厂标识 | |
数据手册 | |
更新时间 | 2024-6-15 22:59:00 |
UC3845N规格书详情
The UC3844, UC3845 series are high performance fixed frequency current mode controllers. They are specifically designed for Off−Line and DC−to−DC converter applications offering the designer a cost effective solution with minimal external components. These integrated circuits feature an oscillator, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.
Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle−by−cycle current limiting, a latch for single pulse metering, and a flip−flop which blanks the output off every other oscillator cycle, allowing output dead times to be programmed for 50 to 70.
These devices are available in an 8−pin dual−in−line plastic package as well as the 14−pin plastic surface mount (SOIC−14). The SOIC−14 package has separate power and ground pins for the totem pole output stage.
The UCX844 has UVLO thresholds of 16 V (on) and 10 V (off), ideally suited for off−line converters. The UCX845 is tailored for lower voltage applications having UVLO thresholds of 8.5 V (on) and 7.6 V (off).
Features
• Current Mode Operation to 500 kHz Output Switching Frequency
• Output Deadtime Adjustable from 50 to 70
• Automatic Feed Forward Compensation
• Latching PWM for Cycle−By−Cycle Current Limiting
• Internally Trimmed Reference with Undervoltage Lockout
• High Current Totem Pole Output
• Input Undervoltage Lockout with Hysteresis
• Low Startup and Operating Current
• Direct Interface with ON Semiconductor SENSEFET™ Products
• Pb−Free Packages are Available
UC3845N属于集成电路(IC) > DC-DC 开关控制器。安森美半导体公司制造生产的UC3845NDC-DC 开关控制器PMIC(电源管理集成电路)DC 到 DC 开关式控制器是用于高效率电路的稳压 IC,其配置为生成高于(突升或步升)或低于(突降或步降)输入电源的输出电源电压。其他拓扑结构可能包括:降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。
产品属性
- 产品编号:
UC3845N
- 制造商:
onsemi
- 类别:
集成电路(IC) > DC-DC 开关控制器
- 包装:
管件
- 输出类型:
晶体管驱动器
- 功能:
升压,升压/降压
- 输出配置:
正,可提供隔离
- 拓扑:
反激,升压
- 输出阶段:
1
- 电压 - 供电 (Vcc/Vdd):
7.6V ~ 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:
通孔
- 封装/外壳:
8-DIP(0.300",7.62mm)
- 供应商器件封装:
8-PDIP
- 描述:
IC REG CTRLR BOOST/FLYBACK 8DIP
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
TI/德州仪器 |
20+ |
PDIP-8 |
1224 |
原装现货 |
询价 | ||
TI |
2020+ |
PDIP-8 |
8000 |
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 |
2020+ |
DIP-8 |
16800 |
绝对原装进口现货,假一赔十,价格优势!? |
询价 | ||
TI/德州仪器 |
22+ |
100000 |
代理渠道/只做原装/可含税 |
询价 | |||
ON |
23+ |
DIP-8 |
20000 |
原厂原装正品现货 |
询价 | ||
TI |
22+ |
PDIP-8 |
9800 |
只做原装正品假一赔十!正规渠道订货! |
询价 | ||
TI |
02+ |
DIP8 |
15 |
一级代理,专注军工、汽车、医疗、工业、新能源、电力 |
询价 | ||
TI |
2023+ |
DIP8 |
80000 |
一级代理/分销渠道价格优势 十年芯程一路只做原装正品 |
询价 | ||
TI/德州仪器 |
DIP8 |
22+ |
12928 |
专营厂家量大可定货 |
询价 | ||
TI/德州仪器 |
2020+ |
DIP8 |
13000 |
原装现货,优势渠道订货假一赔十 |
询价 |