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UC3845B集成電路(IC)的ACDC轉(zhuǎn)換器離線(xiàn)開(kāi)關(guān)規(guī)格書(shū)PDF中文資料

UC3845B
廠(chǎng)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(lèi)別為集成電路(IC)的ACDC轉(zhuǎn)換器離線(xiàn)開(kāi)關(guān);產(chǎn)品描述:SOP-8 AC-DC CONTROLLERS \u0026 REGULA

功能描述

HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER

封裝外殼

8-SOIC(0.154",3.90mm 寬)

文件大小

135.57 Kbytes

頁(yè)面數(shù)量

15 頁(yè)

生產(chǎn)廠(chǎng)商 STMicroelectronics
企業(yè)簡(jiǎn)稱(chēng)

STMICROELECTRONICS意法半導(dǎo)體

中文名稱(chēng)

意法半導(dǎo)體集團(tuán)官網(wǎng)

原廠(chǎng)標(biāo)識(shí)
數(shù)據(jù)手冊(cè)

下載地址一下載地址二到原廠(chǎng)下載

更新時(shí)間

2025-1-22 8:02:00

UC3845B規(guī)格書(shū)詳情

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

產(chǎn)品屬性

  • 產(chǎn)品編號(hào):

    UC3845B

  • 制造商:

    UTD Semiconductor

  • 類(lèi)別:

    集成電路(IC) > AC DC 轉(zhuǎn)換器,離線(xiàn)開(kāi)關(guān)

  • 包裝:

    卷帶(TR)

  • 輸出隔離:

    非隔離

  • 內(nèi)部開(kāi)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(kāi)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(lèi)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(kù)存 備注 價(jià)格
ST
21+
DIP8
3495
原裝現(xiàn)貨假一賠十
詢(xún)價(jià)
ST/意法
DIP-8
22+
8012
原裝正品現(xiàn)貨 可開(kāi)增值稅發(fā)票
詢(xún)價(jià)
友臺(tái)
23+
SOP-8
13800
優(yōu)勢(shì)原裝現(xiàn)貨假一賠十
詢(xún)價(jià)
ON/安森美
SOP8
6698
詢(xún)價(jià)
UMW
21+
標(biāo)準(zhǔn)封裝
496
保證原裝正品,需要聯(lián)系張小姐 13544103396 微信同號(hào)
詢(xún)價(jià)
TI/德州儀器
21+
SOIC-8
2684
百域芯優(yōu)勢(shì) 實(shí)單必成 可開(kāi)13點(diǎn)增值稅
詢(xún)價(jià)
ON/安森美
22+
SOIC-8
100000
代理渠道/只做原裝/可含稅
詢(xún)價(jià)
ON
2018+
SOP8
30810
代理原廠(chǎng)正品有售樣品測(cè)試公司可開(kāi)正規(guī)17%增值稅發(fā)票
詢(xún)價(jià)
ST
2023+
SOP
80000
一級(jí)代理/分銷(xiāo)渠道價(jià)格優(yōu)勢(shì) 十年芯程一路只做原裝正品
詢(xún)價(jià)
ST/意法
23+
NA/
23250
原裝現(xiàn)貨,當(dāng)天可交貨,原型號(hào)開(kāi)票
詢(xún)價(jià)