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UC3845B集成電路(IC)的ACDC轉(zhuǎn)換器離線開關(guān)規(guī)格書PDF中文資料

UC3845B
廠商型號(hào)

UC3845B

參數(shù)屬性

UC3845B 封裝/外殼為8-SOIC(0.154",3.90mm 寬);包裝為卷帶(TR);類別為集成電路(IC)的ACDC轉(zhuǎn)換器離線開關(guān);產(chǎn)品描述:SOP-8 AC-DC CONTROLLERS \u0026 REGULA

功能描述

Low Start-Up and Operating Current

封裝外殼

8-SOIC(0.154",3.90mm 寬)

文件大小

874.34 Kbytes

頁面數(shù)量

7

生產(chǎn)廠商 Guangdong Youtai Semiconductor Co., Ltd.
企業(yè)簡稱

UMW友臺(tái)半導(dǎo)體

中文名稱

廣東友臺(tái)半導(dǎo)體有限公司官網(wǎng)

原廠標(biāo)識(shí)
數(shù)據(jù)手冊(cè)

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更新時(shí)間

2025-1-28 20:00:00

UC3845B規(guī)格書詳情

Description

The 3842/43/44/45 are fixed frequency current mode PWM controller. They are specially designed for OFF?Line and DC to

DC converter applications with a minimal external components. Internally implemented circuits include 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 ideally suited for driving a power MOSFET. Protection circuitry includes built undervoltage lockout and current

limiting. The 3842 and 3844 have UVLO thresholds of 16 V (on) and 10 V (off). The corresponding thresholds for the 3843/

45 are 8.4V (on) and 7.6V (off). The 3842) and 3843 can operate within 100 duty cycle. The 3844 and 3845 can operate within 50 duty

cycle.

The 384X has Start-Up Current 0.5mA (typ).

Features

Low Start-Up and Operating Current

High Current Totem Pole Output

Undervoltage Lockout With Hysteresis

Operating Frequency Up To 500KHz

產(chǎn)品屬性

  • 產(chǎn)品編號(hào):

    UC3845B

  • 制造商:

    UTD Semiconductor

  • 類別:

    集成電路(IC) > AC DC 轉(zhuǎn)換器,離線開關(guān)

  • 包裝:

    卷帶(TR)

  • 輸出隔離:

    非隔離

  • 內(nèi)部開關(guān):

  • 拓?fù)洌?/span>

    反激,升壓

  • 電壓 - 供電 (Vcc/Vdd):

    7.6V ~ 30V

  • 占空比:

    48%

  • 頻率 - 開關(guān):

    50kHz,52kHz

  • 故障保護(hù):

    限流,UVLO

  • 控制特性:

    頻率控制,軟啟動(dòng)

  • 工作溫度:

    0°C ~ 70°C(TA)

  • 封裝/外殼:

    8-SOIC(0.154",3.90mm 寬)

  • 供應(yīng)商器件封裝:

    8-SOP

  • 安裝類型:

    表面貼裝型

  • 描述:

    SOP-8 AC-DC CONTROLLERS \u0026 REGULA

供應(yīng)商 型號(hào) 品牌 批號(hào) 封裝 庫存 備注 價(jià)格
ON/安森美
22+
SOIC-8
100000
代理渠道/只做原裝/可含稅
詢價(jià)
ST/意法
23+
NA/
23250
原裝現(xiàn)貨,當(dāng)天可交貨,原型號(hào)開票
詢價(jià)
ST/HECHDZ
23+
SOP
58000
全新原廠原裝正品現(xiàn)貨,可提供技術(shù)支持、樣品免費(fèi)!
詢價(jià)
ST
24+
DIP8
16800
絕對(duì)原裝進(jìn)口現(xiàn)貨,假一賠十,價(jià)格優(yōu)勢!?
詢價(jià)
ST
DIP8
893993
集團(tuán)化配單-有更多數(shù)量-免費(fèi)送樣-原包裝正品現(xiàn)貨-正規(guī)
詢價(jià)
ST/意法
2018+
SOP-8
880000
明嘉萊只做原裝正品現(xiàn)貨
詢價(jià)
DIP-8
23+
NA
15659
振宏微專業(yè)只做正品,假一罰百!
詢價(jià)
ST
DIP-8
8852
一級(jí)代理 原裝正品假一罰十 價(jià)格優(yōu)勢 實(shí)單帶接受價(jià)
詢價(jià)
ST
589220
16余年資質(zhì) 絕對(duì)原盒原盤 更多數(shù)量
詢價(jià)
ST
2015+
DIP
5700
進(jìn)口原裝正品 能17%開增值發(fā)票
詢價(jià)