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L4990中文資料
L4990數(shù)據(jù)手冊(cè)規(guī)格書PDF詳情
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 soft start, IN/OUT synchronization, disable (to be used for over voltage protection and for power management), precise maximum Duty Cycle Control, 100ns (typ) leading edge blanking on current sense, pulse by pulse current limit and overcurrent protection with soft start in tervention.
■ CURRENT-MODE CONTROL PWM
■ SWITCHING FREQUENCY UP TO 1MHz
■ LOW START-UP CURRENT < 0.45mA
■ HIGH-CURRENT OUTPUT DRIVE SUITABLE FOR POWER MOSFET (1A)
■ FULLY LATCHED PWM LOGIC WITH DOUBLE PULSE SUPPRESSION
■ PROGRAMMABLE DUTY CYCLE
■ 100 AND 50 MAXIMUM DUTY CYCLE LIMIT
■ PROGRAMMABLE SOFT START
■ PRIMARY OVERCURRENT FAULT DETECTION WITH RE-START DELAY
■ PWM UVLO WITH HYSTERESIS
■ IN/OUT SYNCHRONIZATION
■ DISABLE LATCHED
■ INTERNAL 100ns LEADING EDGE BLANKING OF CURRENT SENSE
■ PACKAGE: DIP16 AND SO16W
L4990產(chǎn)品屬性
- 類型
描述
- 型號(hào)
L4990
- 制造商
STMICROELECTRONICS
- 制造商全稱
STMicroelectronics
- 功能描述
PRIMARY CONTROLLER
| 供應(yīng)商 | 型號(hào) | 品牌 | 批號(hào) | 封裝 | 庫(kù)存 | 備注 | 價(jià)格 |
|---|---|---|---|---|---|---|---|
ST |
14+ |
DIP16 |
9860 |
大量原裝進(jìn)口現(xiàn)貨,一手貨源,一站式服務(wù),可開17%增 |
|||
STM |
09+ |
DIP-16 |
3300 |
只售全新原裝貨真實(shí)實(shí)數(shù)現(xiàn)貨放心 |
|||
ST |
2016+ |
DIP16 |
8543 |
只做原裝,假一罰十,公司可開17%增值稅發(fā)票! |
|||
24+ |
DIP |
25 |
|||||
ST |
10+ |
DIP-16 |
7800 |
全新原裝正品,現(xiàn)貨銷售 |
|||
ST |
16+ |
DIP16 |
8000 |
原裝現(xiàn)貨請(qǐng)來電咨詢 |
|||
ST |
23+ |
DIP16 |
5000 |
原裝正品,假一罰十 |
|||
ST |
17+ |
DIP |
6200 |
100%原裝正品現(xiàn)貨 |
|||
ST |
23+ |
DIP |
9562 |
||||
ST |
2017+ |
DIP-16 |
6523 |
只做原裝正品!現(xiàn)貨或訂貨! |
L4990 資料下載更多...
L4990 芯片相關(guān)型號(hào)
STMICROELECTRONICS相關(guān)芯片制造商
Datasheet數(shù)據(jù)表PDF頁(yè)碼索引
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STMicroelectronics 意法半導(dǎo)體集團(tuán)
中文資料: 162323條
意法半導(dǎo)體 (STMicroelectronics) 成立于1987年，總部位于瑞士日內(nèi)瓦和法國(guó)巴黎，是一家全球領(lǐng)先的半導(dǎo)體公司。意法半導(dǎo)體專注于設(shè)計(jì)、制造和銷售各種半導(dǎo)體解決方案，產(chǎn)品廣泛應(yīng)用于汽車、工業(yè)、消費(fèi)電子、通信等領(lǐng)域。 意法半導(dǎo)體的產(chǎn)品包括微控制器、模擬集成電路、功率半導(dǎo)體、傳感器等。公司擁有多個(gè)研發(fā)中心和生產(chǎn)基地，致力于技術(shù)創(chuàng)新和研發(fā)投入。意法半導(dǎo)體在全球范圍內(nèi)擁有廣泛的客戶群和合作伙伴，為客戶提供高品質(zhì)的產(chǎn)品和解決方案。 公司的使命是通過半導(dǎo)體技術(shù)推動(dòng)智能化和可持續(xù)發(fā)展，助力客戶取得成功。意法半導(dǎo)體不僅注重商業(yè)成功，還注重社會(huì)責(zé)任、環(huán)境保護(hù)和可持續(xù)經(jīng)營(yíng)。企業(yè)價(jià)值觀包括創(chuàng)新、尊重
