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UC3845D集成電路(IC)的DC-DC開關(guān)控制器規(guī)格書PDF中文資料

UC3845D
廠商型號

UC3845D

參數(shù)屬性

UC3845D 封裝/外殼為14-SOIC(0.154",3.90mm 寬);包裝為卷帶(TR);類別為集成電路(IC)的DC-DC開關(guān)控制器;產(chǎn)品描述:IC REG CTRLR 14SOIC

功能描述

升壓,升壓/降壓
HIGH PERFORMANCE CURRENT MODE CONTROLLERS
IC REG CTRLR 14SOIC

封裝外殼

14-SOIC(0.154",3.90mm 寬)

文件大小

376.23 Kbytes

頁面數(shù)量

14

生產(chǎn)廠商 ON Semiconductor
企業(yè)簡稱

ONSEMI安森美半導(dǎo)體

中文名稱

安森美半導(dǎo)體公司官網(wǎng)

原廠標(biāo)識
數(shù)據(jù)手冊

原廠下載下載地址一下載地址二到原廠下載

更新時間

2025-3-16 10:02:00

人工找貨

UC3845D價格和庫存,歡迎聯(lián)系客服免費(fèi)人工找貨

UC3845D規(guī)格書詳情

UC3845D屬于集成電路(IC)的DC-DC開關(guān)控制器。由安森美半導(dǎo)體公司制造生產(chǎn)的UC3845DDC-DC 開關(guān)控制器PMIC(電源管理集成電路)DC 到 DC 開關(guān)式控制器是用于高效率電路的穩(wěn)壓 IC,其配置為生成高于(突升或步升)或低于(突降或步降)輸入電源的輸出電源電壓。其他拓?fù)浣Y(jié)構(gòu)可能包括:降壓-升壓、反激、正激、Cuk、SEPIC、全橋、半橋和推挽式。這些器件不同于需要最小電壓并“燒盡”多余電壓的線性穩(wěn)壓器。

The UC3844, UC3845 series are high performance fixed frequency current mode controllers. They are specifically designed for Off?Line and DC?to?DC converter applications offering the designer a cost effective solution with minimal external components. These integrated circuits feature an oscillator, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.

Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle?by?cycle current limiting, a latch for single pulse metering, and a flip?flop which blanks the output off every other oscillator cycle, allowing output dead times to be programmed for 50 to 70.

These devices are available in an 8?pin dual?in?line plastic package as well as the 14?pin plastic surface mount (SOIC?14). The SOIC?14 package has separate power and ground pins for the totem pole output stage.

The UCX844 has UVLO thresholds of 16 V (on) and 10 V (off), ideally suited for off?line converters. The UCX845 is tailored for lower voltage applications having UVLO thresholds of 8.5 V (on) and 7.6 V (off).

Features

? Current Mode Operation to 500 kHz Output Switching Frequency

? Output Deadtime Adjustable from 50 to 70

? Automatic Feed Forward Compensation

? Latching PWM for Cycle?By?Cycle Current Limiting

? Internally Trimmed Reference with Undervoltage Lockout

? High Current Totem Pole Output

? Input Undervoltage Lockout with Hysteresis

? Low Startup and Operating Current

? Direct Interface with ON Semiconductor SENSEFET? Products

? Pb?Free Packages are Available

產(chǎn)品屬性

更多
  • 產(chǎn)品編號:

    UC3845D

  • 制造商:

    onsemi

  • 類別:

    集成電路(IC) > DC-DC 開關(guān)控制器

  • 包裝:

    卷帶(TR)

  • 輸出類型:

    晶體管驅(qū)動器

  • 功能:

    升壓,升壓/降壓

  • 輸出配置:

    正,可提供隔離

  • 拓?fù)洌?/span>

    反激,升壓

  • 輸出階段:

    1

  • 電壓 - 供電 (Vcc/Vdd):

    7.6V ~ 30V

  • 頻率 - 開關(guān):

    最高 500kHz

  • 占空比(最大):

    48%

  • 同步整流器:

  • 時鐘同步:

  • 工作溫度:

    0°C ~ 70°C(TA)

  • 安裝類型:

    表面貼裝型

  • 封裝/外殼:

    14-SOIC(0.154",3.90mm 寬)

  • 供應(yīng)商器件封裝:

    14-SOIC

  • 描述:

    IC REG CTRLR 14SOIC

供應(yīng)商 型號 品牌 批號 封裝 庫存 備注 價格
MAXIM/美信
SOP14
1000
優(yōu)勢庫存
詢價
ST
23+
SOP16
16900
正規(guī)渠道,只有原裝!
詢價
ON
22+
14-SOIC
2100
詢價
TI/德州儀器
23+
SOIC-14
8355
只做原裝現(xiàn)貨/實單可談/支持含稅拆樣
詢價
TI/TEXAS
23+
原廠封裝
8931
詢價
TI有量
23+
SOP-14
50000
全新原裝正品現(xiàn)貨,支持訂貨
詢價
UC
24+
SOP
16800
絕對原裝進(jìn)口現(xiàn)貨,假一賠十,價格優(yōu)勢!?
詢價
LINFINITY
23+
SOP
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
HOOYI
2019
SOP
23500
原裝正品鉆石品質(zhì)假一賠十
詢價
UC
22+
SOP
25000
只有原裝原裝,支持BOM配單
詢價