UC3845B中文资料PDF规格书
厂商型号 |
UC3845B |
参数属性 | UC3845B 封装/外壳为8-SOIC(0.154",3.90mm 宽);包装为卷带(TR);类别为集成电路(IC) > AC DC 转换器,离线开关;产品描述:SOP-8 AC-DC CONTROLLERS \u0026 REGULA |
功能描述 | HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER |
文件大小 |
135.57 Kbytes |
页面数量 |
15 页 |
生产厂商 | STMicroelectronics |
企业简称 |
STMICROELECTRONICS【意法半导体】 |
中文名称 | 意法半导体(ST)集团官网 |
原厂标识 | |
数据手册 | |
更新时间 | 2024-5-22 16:15:00 |
UC3845B规格书详情
DESCRIPTION
The UC384xB family of control ICs 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 a trimmed oscillator for precise DUTY CYCLE CONTROL under voltage lockout featuring start-up current less than 0.5mA, 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 offstate.
■ TRIMMED OSCILLATOR FOR PRECISE FREQUENCY CONTROL
■ OSCILLATOR FREQUENCY GUARANTEED AT 250kHz
■ CURRENT MODE OPERATION TO 500kHz
■ AUTOMATIC FEED FORWARD COMPENSATION
■ LATCHING PWM FOR CYCLE-BY-CYCLE CURRENT LIMITING
■ INTERNALLY TRIMMED REFERENCE WITH UNDERVOLTAGE LOCKOUT
■ HIGH CURRENT TOTEM POLE OUTPUT
■ UNDERVOLTAGE LOCKOUT WITH HYSTERESIS
■ LOW START-UP AND OPERATING CURRENT
产品属性
- 产品编号:
UC3845B
- 制造商:
UTD Semiconductor
- 类别:
集成电路(IC) > AC DC 转换器,离线开关
- 包装:
卷带(TR)
- 输出隔离:
非隔离
- 内部开关:
是
- 拓扑:
反激,升压
- 电压 - 供电 (Vcc/Vdd):
7.6V ~ 30V
- 占空比:
48%
- 频率 - 开关:
50kHz,52kHz
- 故障保护:
限流,UVLO
- 控制特性:
频率控制,软启动
- 工作温度:
0°C ~ 70°C(TA)
- 封装/外壳:
8-SOIC(0.154",3.90mm 宽)
- 供应商器件封装:
8-SOP
- 安装类型:
表面贴装型
- 描述:
SOP-8 AC-DC CONTROLLERS \u0026 REGULA
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
ON |
23+ |
SOP8 |
20000 |
原装正品,假一罚十 |
询价 | ||
ST |
23+ |
DIP-8 |
15000 |
全新原装现货,价格优势 |
询价 | ||
ST/意法 |
22+ |
DIP-8 |
354000 |
询价 | |||
ST |
2020+ |
DIP |
350000 |
100%进口原装正品公司现货库存 |
询价 | ||
ST |
0607+ |
DIP |
4485 |
原装现货!低价支持实单!贵了给接受价格! |
询价 | ||
ST |
22 |
SOP8 |
25000 |
3月31原装,微信报价 |
询价 | ||
ST |
DIP8 |
893993 |
集团化配单-有更多数量-免费送样-原包装正品现货-正规 |
询价 | |||
ST/意法 |
DIP-8 |
22+ |
8012 |
原装正品现货 可开增值税发票 |
询价 | ||
ST |
2339+ |
DIP |
5989 |
公司原厂原装现货假一罚十!特价出售!强势库存! |
询价 | ||
ST |
13 |
DIP |
6000 |
原装正品现货 |
询价 |
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