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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

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友臺半導(dǎo)體

中文名稱

廣東友臺半導(dǎo)體有限公司官網(wǎng)

原廠標識
數(shù)據(jù)手冊

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更新時間

2025-1-25 9:48:00

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:

    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):

  • 拓撲:

    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:

    限流,UVLO

  • 控制特性:

    頻率控制,軟啟動

  • 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 品牌 批號 封裝 庫存 備注 價格
ST/意法
23+
SOP8
50000
全新原裝正品現(xiàn)貨,支持訂貨
詢價
ST
23+
DIP
1800
十七年VIP會員,誠信經(jīng)營,一手貨源,原裝正品可零售!
詢價
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!
詢價
UMW
24+
con
367
現(xiàn)貨常備產(chǎn)品原裝可到京北通宇商城查價格https://www.jbchip.com/index
詢價
ST/意法
22+
DIP
18000
只做全新原裝,支持BOM配單,假一罰十
詢價
ST
DIP-8
8852
一級代理 原裝正品假一罰十 價格優(yōu)勢 實單帶接受價
詢價
ST/意法
23+
DIP
11200
原廠授權(quán)一級代理、全球訂貨優(yōu)勢渠道、可提供一站式BO
詢價
ST
24+
DIP8
16800
絕對原裝進口現(xiàn)貨,假一賠十,價格優(yōu)勢!?
詢價
STM原廠目錄
24+
DIP-8;SO-8
96000
全新原裝
詢價
ST
24+
SO-8
25000
一級代理進口原裝現(xiàn)貨假一賠十
詢價