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L4990D

PRIMARY CONTROLLER

DESCRIPTION This primary controller I.C., developed in BCD60II technology, has been designed to implement off line or DC-DC power supply applications using a fixed frequency current mode control. Based on a standard current mode PWM control ler this device includes some features as programmable

文件:322.27 Kbytes 页数:24 Pages

STMICROELECTRONICS

意法半导体

NTE4990

Surge Clamping, Transient Overvoltage Suppressor Unidirectional

Description: The NTE4900 series of silicon Transient Suppressors designed to protect voltage sensitive components from high energy voltage transients. Transient over voltage suppressor devices have become very important as a consequence of their high surge capability, extremely fast response time

文件:26.04 Kbytes 页数:2 Pages

NTE

SAA4990

Progressive scan-Zoom and Noise reduction IC PROZONIC

GENERAL DESCRIPTION The Progressive scan-Zoom and Noise reduction IC, abbreviated as PROZONIC, is designed for applications together with: SAA4951WP Economy Controller (ECO3) SAA4952H (memory controller) SAA7158WP Back END IC (BENDIC) SAA4995WP PANorama IC (PANIC) SAA4970

文件:193.81 Kbytes 页数:28 Pages

PHI

PHI

PHI

UPD4990AC

SERIAL I/O CALENDAR & CLOCK CMOS LSI

SEMICONDUCTOR SELECTION GUIDE Microcomputer IC Memory Semi-Custom IC Particular Purpose IC General Purpose Linear IC Transistor / Diode / Thyristor Microwave Device / Consumer Use High Frequency Device Optical Device Packages Index (Quick Reference by Type N

文件:129.97 Kbytes 页数:20 Pages

NEC

瑞萨

详细参数

  • 型号:

    L4990D

  • 制造商:

    STMICROELECTRONICS

  • 制造商全称:

    STMicroelectronics

  • 功能描述:

    PRIMARY CONTROLLER

供应商型号品牌批号封装库存备注价格
ST
2602+
SOP-16
4652
公司原厂原装现货假一罚十!特价出售!强势库存!
询价
ST
22+
SO-16
5000
原装现货库存.价格优势!!
询价
ST
25+
SOP16W
3629
原装优势!房间现货!欢迎来电!
询价
ST/意法
23+
SOP
89630
当天发货全新原装现货
询价
ST/意法
24+
SOP
27950
郑重承诺只做原装进口现货
询价
ST
25+
SOP16
20000
原装,请咨询
询价
ST
2511
SOP16
16900
电子元器件采购降本30%!原厂直采,砍掉中间差价
询价
ST/意法
2450+
SOP
8850
只做原装正品假一赔十为客户做到零风险!!
询价
ST
26+
SOP16
60000
只有原装 可配单
询价
ST
26+
标准封装
890000
一级总代理商原厂原装大批量现货 一站式服务
询价
更多L4990D供应商 更新时间2026-10-14 14:02:00