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          首頁>LR645>規(guī)格書詳情

          LR645集成電路(IC)的線性+開關(guān)穩(wěn)壓器規(guī)格書PDF中文資料

          PDF無圖
          廠商型號(hào)

          LR645

          參數(shù)屬性

          LR645 封裝/外殼為8-SOIC(0.154",3.90mm 寬);包裝為卷帶(TR)剪切帶(CT)Digi-Reel? 得捷定制卷帶;類別為集成電路(IC)的線性+開關(guān)穩(wěn)壓器;產(chǎn)品描述:IC REG LINEAR POS ADJ 3MA 8SOIC

          功能描述

          High-Input Voltage SMPS, Start-up/Linear Regulator
          IC REG LINEAR POS ADJ 3MA 8SOIC

          封裝外殼

          8-SOIC(0.154",3.90mm 寬)

          文件大小

          816.96 Kbytes

          頁面數(shù)量

          24

          生產(chǎn)廠商

          MICROCHIP

          中文名稱

          微芯科技

          網(wǎng)址

          網(wǎng)址

          數(shù)據(jù)手冊(cè)

          原廠下載下載地址一下載地址二到原廠下載

          更新時(shí)間

          2026-1-20 13:37:00

          人工找貨

          LR645價(jià)格和庫(kù)存,歡迎聯(lián)系客服免費(fèi)人工找貨

          LR645規(guī)格書詳情

          LR645屬于集成電路(IC)的線性+開關(guān)穩(wěn)壓器。由美國(guó)微芯科技公司制造生產(chǎn)的LR645穩(wěn)壓器 - 線性線性穩(wěn)壓器用于提供穩(wěn)定的輸出電壓,無論負(fù)載電流、輸入電壓或環(huán)境因素如何變化,這些輸出電壓通常都要保持不變。它們的工作原理要求輸入電壓維持在高于所需的輸出電壓,而且要超出某個(gè)最小量,并且在工作時(shí)會(huì)將輸入端的任何多余電壓轉(zhuǎn)換為熱量。對(duì)于大多數(shù)應(yīng)用而言,雖然這種穩(wěn)壓器的效率低于開關(guān)模式的穩(wěn)壓器,但它們通常更適合對(duì)噪聲高度敏感的應(yīng)用。

          特性 Features

          ? Accepts Inputs from 15 to 450V

          ? Output Currents: Up to 3.0 mA Continuous,

          30 mA Peak

          ? Supply Current Typically 50 μA

          ? Line Regulation Typically 0.1 mV/V

          ? Output Can Be Trimmed from 8.0 to 12V

          ? Output Current Can be Increased to 150 mA with

          External FET

          Applications

          ? Off-line SMPS Startup Circuits (Pulse Loads)

          ? Low Power Off-Line Regulators

          ? Regulators for Noisy Inputs

          描述 Description

          LR645 is a high-input voltage, low-output current, linear

          regulator that is available in two versions. A 3-terminal,

          fixed-output voltage version is available in TO-92,

          TO-220 and SOT-89 packages, as well as an

          adjustable voltage version available in an 8-lead SOIC

          package.

          The 3-terminal version of LR645 functions like any

          other low-voltage, 3-terminal regulator except it allows

          the use of much higher-input voltages. When used in a

          Switched-mode Power Supply (SMPS), start-up circuit,

          LR645 eliminates the need for large power resistors. In

          this application, current is drawn from the high voltage

          line only during start-up. Only leakage current flows

          after start-up, thereby reducing the continuous power

          dissipation to a few milliwatts.

          The adjustable-voltage version allows trimming of the

          output voltage from 8.0V to 12V. This version can also

          be connected to an external depletion mode

          metal-oxide-semiconductor field-effect transistor

          (MOSFET) for increased output current. When used in

          conjunction with depletion mode MOSFET DN2540N5,

          an output current of up to 150 mA is achieved.

          產(chǎn)品屬性

          更多
          • 產(chǎn)品編號(hào):

            LR645LG-G

          • 制造商:

            Microchip Technology

          • 類別:

            集成電路(IC) > 線性 + 開關(guān)穩(wěn)壓器

          • 包裝:

            卷帶(TR)剪切帶(CT)Digi-Reel? 得捷定制卷帶

          • 輸出配置:

          • 輸出類型:

            可調(diào)式

          • 電壓 - 輸入(最大值):

            450V

          • 電壓 - 輸出(最小值/固定):

            8V

          • 電壓 - 輸出(最大值):

            12V

          • 電流 - 輸出:

            3mA

          • PSRR:

            60dB(120Hz)

          • 工作溫度:

            -55°C ~ 155°C

          • 安裝類型:

            表面貼裝型

          • 封裝/外殼:

            8-SOIC(0.154",3.90mm 寬)

          • 供應(yīng)商器件封裝:

            8-SOIC

          • 描述:

            IC REG LINEAR POS ADJ 3MA 8SOIC

          供應(yīng)商 型號(hào) 品牌 批號(hào) 封裝 庫(kù)存 備注 價(jià)格
          Supertex
          18+
          SOIC8
          10007
          全新原裝現(xiàn)貨,可出樣品,可開增值稅發(fā)票
          詢價(jià)
          Microchip
          24+
          TO226-3
          10000
          全新原廠原裝,進(jìn)口正品現(xiàn)貨,正規(guī)渠道可含稅?。?/div>
          詢價(jià)
          SUPERTEX
          24+
          SOIC8
          9600
          原裝現(xiàn)貨,優(yōu)勢(shì)供應(yīng),支持實(shí)單!
          詢價(jià)
          MICROCHIP
          24+
          NA
          2000
          原裝現(xiàn)貨,專業(yè)配單專家
          詢價(jià)
          SUPERT
          23+
          SOT89
          3000
          原裝正品假一罰百!可開增票!
          詢價(jià)
          SUPERTEX
          23+
          SOT-89
          7566
          原廠原裝
          詢價(jià)
          MICROCH
          23+
          SOT-89
          50000
          全新原裝正品現(xiàn)貨,支持訂貨
          詢價(jià)
          SUPERTE
          SOP8
          6698
          詢價(jià)
          MICROCHIP(美國(guó)微芯)
          2021+
          SOT-89(TO-243AA)
          499
          詢價(jià)
          SUTEX
          25+
          SOT89
          2987
          只售原裝自家現(xiàn)貨!誠(chéng)信經(jīng)營(yíng)!歡迎來電!
          詢價(jià)
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